Victorian Energy Efficiency Certificates (VEECs)
Victorian Energy Efficiency Certificates (VEECs)
Extra Savings for Victorian Households
If you live in Victoria, you may be eligible for additional financial incentives under the Victorian Energy Upgrades (VEU) program, through the creation of Victorian Energy Efficiency Certificates (VEECs).
VEECs are generated when you install an eligible energy-efficient product, such as a Solahart heat pump or solar water heater. These certificates have a monetary value and are used to reduce the upfront cost of your new system, often providing hundreds of dollars in extra savings on top of federal rebates like STCs.
The number of VEECs you receive depends on the type of system you choose, your existing setup, and how much energy you’re expected to save by switching to a more efficient solution.
At Solahart, we're registered participants in the program and take care of the paperwork for you, ensuring you receive the maximum available benefit.
How VEECs Work
The Victorian Energy Efficiency Certificates (VEECs) are part of the Victorian Energy Upgrades (VEU) program, a state government initiative that aims to reduce greenhouse gas emissions by encouraging households and businesses to install energy-efficient products.
Here’s how it works:
- You install an eligible energy-saving product, such as a Solahart solar water heater or heat pump.
- VEECs are created based on the amount of greenhouse gas emissions your upgrade is expected to avoid over its lifetime. One VEEC represents one tonne of carbon dioxide equivalent (CO₂-e) abated.
- These VEECs are sold to energy retailers, who buy them to meet their government-imposed targets. The value of these certificates is then passed on to you as a discount off the purchase price of your system.
- The process is managed by an accredited provider, like Solahart, who handles the certificate creation and claim on your behalf. You don't need to apply separately.
Eligibility and Terms
To be eligible for VEECs:
- You must be a Victorian resident or business.
- The product installed must be on the VEU program’s list of approved products.
- The installation must be completed by an approved provider and meet program guidelines.
- You may be asked to sign a customer assignment form to allow the provider to claim the VEECs on your behalf.
- VEECs cannot be claimed for the same activity more than once.
Note: VEEC values fluctuate based on market supply and demand, and the level of incentive available at the time of installation may vary.
Get smart, switch to Solahart today
Solahart 302CS13C
The Solahart 302CS13C is designed for medium-sized households, providing reliable solar hot water with enhanced corrosion resistance. Featuring closed-circuit thermosiphon technology, it is perfect for areas with harsh water conditions.
Solahart 302CS13C Solar Water Heater: Key Attributes
The Solahart 302CS13C is designed for medium-sized households (3-5 people), offering a 302L tank to meet daily hot water needs. With closed-circuit thermosiphon technology, this system ensures superior corrosion protection, making it ideal for harsh water areas. It includes a TRV valve for safe operation and Super Shield Enamel® for long-term durability. The CS13C Free Heat Series provides significant energy savings and you may reduce your energy consumption by up to 75%.
Key Features:
- Capacity: 300-Litre tank, ideal for medium households (3-5 people).
- Closed Circuit Thermosiphon: Corrosion-resistant, solar-powered water heating.
- TRV Valve: Safe pressure relief for optimal system performance.
- Super Shield Enamel: Enhanced durability with corrosion protection.
- Energy Efficient: May save up to 75% on your water heating energy consumption.#
- Reduced CO2 Emissions: Save up to 2.3 tonnes of CO2 annually.#
Warranty:
- 10-year warranty on the collector and tank.*
- 5-year warranty on parts and labour.*
Collectors:
- 2 x CS13C Collectors - provide higher performance in low to medium solar gain areas.
Explore more Roof Top Solar
Explore more-
Solahart 181CS13C
Compact, reliable solar hot water solution with enhanced corrosion protection for smaller households. -
Solahart 181L
Solahart L Free Heat Series - 181L open-circuit roof-mounted solar water heater. -
Solahart 181SP
Compact, efficient solar hot water solution with superior corrosion protection.
Free Heat - 300F
How Roof Top Solar Systems Work Solar Operation
The 302CS13C solar system has its vitreous enamel lined solar storage tank installed on the roof directly coupled to the solar collectors. In the Closed Circuit Series, heat is absorbed by the collector and passed to the ‘Hartgard’ heat transfer liquid inside the collector. As the temperature of the ‘Hartgard’ increases, the hot fluid rises up through the collector by the Natural Thermosiphon Principle, into the heat exchanger jacket around the potable water storage tank. Here, the heat is transferred to the potable water, cooling the ‘Hartgard’ fluid. The cooler fluid is then forced back down into the collectors through the displacement action of further hot fluid rising up into the heat exchanger jacket.
Orientation of Solar Collectors
To help maximise system performance, solar collectors should be installed with an optimum orientation facing true north (in the southern hemisphere) or true south (in the northern hemisphere). Always check for true north or true south using a compass or other suitable device.
To help maximise system performance, solar collectors should be installed with an optimum inclination. This is equal to 90% to 100% of the local latitude angle when collectors are oriented within 60° of true north or true south, and between 10° and 20° if the collectors are oriented between 60° and 90° from the optimum orientation. Generally, improved summer performance is obtained from an angle of inclination less than the optimum angle and improved winter performance is obtained by an angle of inclination greater than the optimum angle. If the angle of inclination varies by 20° from the optimum angle, the solar collectors will receive about 10% less total annual solar radiation.
Frost/Freeze Protection
Solahart Closed Circuit Systems are protected against freezing or harsh water conditions by our exclusive ‘Hartgard’ fluid. ‘Hartgard’ is a blue, non-toxic, propylene glycol fluid which, when mixed with water, provides the Heat Transfer Fluid contained in the solar collectors and the heat exchanger jacket around the tank. ‘Hartgard’ is used to lower the freezing temperature of the Heat Transfer Fluid and so provides protection against freezing (Note: for the correct % of Hartgard in the Heat Transfer Fluid, refer to the section on Frost / Freeze Protection). ‘Hartgard’ is a special food grade solution and is the only solution permitted to be used in the closed circuit systems. Hartgard has been approved by the National Health and Medical Research Council of Australia.
Solar Boosting
In-Tank Boosting
An isolating switch is installed in the electrical meter box for an electrically in-tank boosted model. This should be left switched on to allow the booster heating unit to operate if required. The booster heating unit is for heating the water at times of low solar energy gain, such as during very cloudy or rainy weather, or during the colder months. The booster heating unit will only activate if heating is required and power is available from the switchboard. When the water is below the thermostat setting, the booster heating unit will turn on and heat the water. The booster heating unit will automatically turn off when the temperature of the water reaches the thermostat setting. If the water temperature drops below the setting again the booster will re-activate.
In-Series Gas Boosting
An in-series gas booster (also known as an instantaneous gas booster) can be installed between the solar water heater and the hot outlets in the house. This booster should be permanently active. The booster senses the temperature of the water passing through it: if the water temperature is above its temperature setting it does nothing; if below it will automatically heat the water up to the preset outlet temperature setting. This device ensures hot water delivery for a variety of hot water demands without the need for user intervention while enabling maximum solar energy contribution to the water heating. For more information on this booster, consult the owner’s manual for the product.
Over-Temperature Protection System
The Closed Circuit Series solar water heaters have a means of controlling the maximum temperature of the water in the storage tank. These systems may be installed with a ‘HartStat’ valve located between the hot outlet of the collectors and the inlet to the tank heat exchanger. This valve closes when the tank has reached a sufficiently high temperature, thereby preventing further heat transfer to the tank, and thus limiting its temperature.
* The suggested price is comprised of RRP less the applicable solar incentive and excluding installation. Solar incentive value applies to 272RLX system in Zone 3.
^ Energy savings of up to 65% shown are based on Australian Government approved TRNSYS simulation modelling of a Solahart 272RLX and using a medium load in Zone 3 and apply when replacing an electric water heater. Any savings will vary depending upon your location, type of Solahart system installed, orientation and inclination of the solar collectors, type of water heater being replaced, hot water consumption and fuel tariff. Maximum financial savings off your hot water bill are achievable when replacing an electric water heater on continuous tariff.
† Solahart Warranty Details: 10/3/2 warranty; 10 year cylinder and collector supply, 3 year cylinder and collector labour, 2 year parts supply including labour; applies to a single family domestic dwelling only. Without limiting these periods, a 5-year whole-of-product warranty applies where a rebate has been received under Solar Victoria’s Solar Homes Program for installations from 1st July 2023. For further details, call 131 031.
All other applications have a 3/1/1 warranty; 3 year cylinder and collector supply, 1 year parts supply, 1 year labour.
‡ Enhanced Frost Protection – these systems have a level of enhanced recirculating freeze protection designed to guard against freeze conditions. These systems are suitable to be installed at an altitude not exceeding 600 m above sea level.
∠ Harsh water regions – the Solahart warranty may not apply if the water heater is connected to a water supply which: is scaling with a saturation index >+0.8, or; is corrosive with a saturation index <-1.0, or; has a Total Dissolved Solids content >2500 mg/L.
* The suggested price is comprised of RRP less the applicable solar incentive and excluding installation. Solar incentive value applies to 302CS13C system in Zone 3.
^ Energy savings of up to 75% shown are based on Australian Government approved TRNSYS simulation modelling of a Solahart 302CS13C and using a medium load in Zone 3 and apply when replacing an electric water heater. Any savings will vary depending upon your location, type of Solahart system installed, orientation and inclination of the solar collectors, type of water heater being replaced, hot water consumption and fuel tariff. Maximum financial savings off your hot water bill are achievable when replacing an electric water heater on continuous tariff.
† Solahart Warranty Details: 5/5/5 warranty; 5 year cylinder and collectors supply, 5 year parts, 5 year labour. 10/5/5 warranty, 10 year cylinder and collectors supply, 5 year parts, 5 year labour.
Solahart 181CS13C
The Solahart 181CS13C offers a compact, high-performance solar hot water system for smaller households. Closed-circuit thermosiphon technology provides enhanced protection against corrosion, making it perfect for areas with harsh water conditions.
Solahart 181CS13C Solar Water Heater: Key Attributes
Why the 181CS13C system is a smart choice
The Solahart 181CS13C is designed for smaller households (1-2 people) and provides reliable hot water year-round. The 180-Litre capacity tank is ideal for homes with lower hot water demand. Using closed-circuit thermosiphon technology, this system offers enhanced protection against corrosion, making it suitable for harsh water conditions. The system includes a TRV valve for safe pressure relief, and the Super Shield Enamel® coating ensures long-lasting durability. The CS13C Series offers excellent energy savings while reducing your carbon footprint.
Key Features:
- Capacity: 180-Litre tank, ideal for small households (1-2 people).
- Closed Circuit Thermosiphon: Corrosion-resistant solar-powered water heating.
- TRV Valve: Provides safe pressure relief for smooth operation.
- Super Shield Enamel: Protection against corrosion for durability.
- Energy Efficient: Save up to 75% on water heating costs.#
- Reduced CO2 Emissions: Save up to 2.3 tonnes of CO2 annually.#
Warranty:
- 10-year warranty on the collector and tank.*
- 5-year warranty on parts and labour.*
Collectors:
- 1 x CS13C Collector - provides higher performance in low to medium solar gain areas.
Explore more Roof Top Solar
-
Solahart 181CS13C
Compact, reliable solar hot water solution with enhanced corrosion protection for smaller households. -
Solahart 181L
Solahart L Free Heat Series - 181L open-circuit roof-mounted solar water heater. -
Solahart 181SP
Compact, efficient solar hot water solution with superior corrosion protection.
How Roof Top Solar Systems Work Solar Operation
The 181CS13C solar system has its vitreous enamel lined solar storage tank installed on the roof directly coupled to the solar collectors. In the Closed Circuit Series, heat is absorbed by the collector and passed to the ‘Hartgard’ heat transfer liquid inside the collector. As the temperature of the ‘Hartgard’ increases, the hot fluid rises up through the collector by the Natural Thermosiphon Principle, into the heat exchanger jacket around the potable water storage tank. Here, the heat is transferred to the potable water, cooling the ‘Hartgard’ fluid. The cooler fluid is then forced back down into the collectors through the displacement action of further hot fluid rising up into the heat exchanger jacket.
Orientation of Solar Collectors
To help maximise system performance, solar collectors should be installed with an optimum orientation facing true north (in the southern hemisphere) or true south (in the northern hemisphere). Always check for true north or true south using a compass or other suitable device.
To help maximise system performance, solar collectors should be installed with an optimum inclination. This is equal to 90% to 100% of the local latitude angle when collectors are oriented within 60° of true north or true south, and between 10° and 20° if the collectors are oriented between 60° and 90° from the optimum orientation. Generally, improved summer performance is obtained from an angle of inclination less than the optimum angle and improved winter performance is obtained by an angle of inclination greater than the optimum angle. If the angle of inclination varies by 20° from the optimum angle, the solar collectors will receive about 10% less total annual solar radiation.
Frost/Freeze Protection
Solahart Closed Circuit Systems are protected against freezing or harsh water conditions by our exclusive ‘Hartgard’ fluid. ‘Hartgard’ is a blue, non-toxic, propylene glycol fluid which, when mixed with water, provides the Heat Transfer Fluid contained in the solar collectors and the heat exchanger jacket around the tank. ‘Hartgard’ is used to lower the freezing temperature of the Heat Transfer Fluid and so provides protection against freezing (Note: for the correct % of Hartgard in the Heat Transfer Fluid, refer to the section on Frost / Freeze Protection). ‘Hartgard’ is a special food grade solution and is the only solution permitted to be used in the closed circuit systems. Hartgard has been approved by the National Health and Medical Research Council of Australia.
Solar Boosting
In-Tank Boosting
An isolating switch is installed in the electrical meter box for an electrically in-tank boosted model. This should be left switched on to allow the booster heating unit to operate if required. The booster heating unit is for heating the water at times of low solar energy gain, such as during very cloudy or rainy weather, or during the colder months. The booster heating unit will only activate if heating is required and power is available from the switchboard. When the water is below the thermostat setting, the booster heating unit will turn on and heat the water. The booster heating unit will automatically turn off when the temperature of the water reaches the thermostat setting. If the water temperature drops below the setting again the booster will re-activate.
In-Series Gas Boosting
An in-series gas booster (also known as an instantaneous gas booster) can be installed between the solar water heater and the hot outlets in the house. This booster should be permanently active. The booster senses the temperature of the water passing through it: if the water temperature is above its temperature setting it does nothing; if below it will automatically heat the water up to the preset outlet temperature setting. This device ensures hot water delivery for a variety of hot water demands without the need for user intervention while enabling maximum solar energy contribution to the water heating. For more information on this booster, consult the owner’s manual for the product.
Over-Temperature Protection System
The Closed Circuit Series solar water heaters have a means of controlling the maximum temperature of the water in the storage tank. These systems may be installed with a ‘HartStat’ valve located between the hot outlet of the collectors and the inlet to the tank heat exchanger. This valve closes when the tank has reached a sufficiently high temperature, thereby preventing further heat transfer to the tank, and thus limiting its temperature.
* The suggested price is comprised of RRP less the applicable solar incentive and excluding installation. Solar incentive value applies to 272RLX system in Zone 3.
^ Energy savings of up to 65% shown are based on Australian Government approved TRNSYS simulation modelling of a Solahart 272RLX and using a medium load in Zone 3 and apply when replacing an electric water heater. Any savings will vary depending upon your location, type of Solahart system installed, orientation and inclination of the solar collectors, type of water heater being replaced, hot water consumption and fuel tariff. Maximum financial savings off your hot water bill are achievable when replacing an electric water heater on continuous tariff.
† Solahart Warranty Details: 10/3/2 warranty; 10 year cylinder and collector supply, 3 year cylinder and collector labour, 2 year parts supply including labour; applies to a single family domestic dwelling only. Without limiting these periods, a 5-year whole-of-product warranty applies where a rebate has been received under Solar Victoria’s Solar Homes Program for installations from 1st July 2023. For further details, call 131 031.
All other applications have a 3/1/1 warranty; 3 year cylinder and collector supply, 1 year parts supply, 1 year labour.
‡ Enhanced Frost Protection – these systems have a level of enhanced recirculating freeze protection designed to guard against freeze conditions. These systems are suitable to be installed at an altitude not exceeding 600 m above sea level.
∠ Harsh water regions – the Solahart warranty may not apply if the water heater is connected to a water supply which: is scaling with a saturation index >+0.8, or; is corrosive with a saturation index <-1.0, or; has a Total Dissolved Solids content >2500 mg/L.
Solahart 302LCSD
The Solahart 302LCSD offers reliable, energy-efficient solar water heating for medium-sized households. Its open-circuit thermosiphon system and corrosion-resistant features make it ideal for a variety of Australian climates.
Solahart 302LCSD Solar Water Heater: Key Attributes
Why the 302LCSD system is a smart choice
The Solahart 302LCSD is designed for medium-sized households of 6 or more people, providing a 302L tank to meet the daily hot water needs of your family. This system uses open circuit thermosiphon technology to efficiently harness solar energy with minimal maintenance. Its TRV valve ensures safe operation, and the Super Shield Enamel protects the tank from corrosion, making it suitable for different climates, including areas with moderate water conditions. The LCSD Series offers significant energy savings, helping reduce water heating costs by up to 80%.
Key Features:
- Capacity: 300-Litre tank, ideal for medium households (6 or more people).
- Open Circuit Thermosiphon: Efficient solar heating system with low maintenance.
- TRV Valve: Provides safe pressure relief for smooth system operation.
- Super Shield Enamel: Corrosion-resistant coating for longer-lasting durability.
- Energy Efficient: Save up to 70% on water heating costs.#
- Reduced CO2 Emissions: Save up to 2.8 tonnes of CO2 annually.#
Warranty:
- 10-year warranty on the collector and tank.*
- 5-year warranty on parts and labour.*
Collectors:
- 2 x LCSD Collectors - for higher efficiency for use in low to medium solar gain areas.
How Roof Top Solar Systems Work
Solar Operation
The 302LCSD solar system has its vitreous enamel lined solar storage tank installed on the roof directly coupled to the solar collectors. It works on the simple scientific fact that hot water rises. As the sun heats the water in the solar collectors, the increase in temperature causes the water to rise through an insulated copper pipe into the storage tank. This allows cooler water from the solar storage tank to flow into the solar collectors to be heated by the sun‟s energy. This process continues while solar energy is available.
Orientation of Solar Collectors
To help maximise system performance, solar collectors should be installed with an optimum orientation facing true north (in the southern hemisphere) or true south (in the northern hemisphere). Always check for true north or true south using a compass or other suitable device.
To help maximise system performance, solar collectors should be installed with an optimum inclination. This is equal to 90% to 100% of the local latitude angle when collectors are oriented within 60° of true north or true south, and between 10° and 20° if the collectors are oriented between 60° and 90° from the optimum orientation. Generally, improved summer performance is obtained from an angle of inclination less than the optimum angle and improved winter performance is obtained by an angle of inclination greater than the optimum angle. If the angle of inclination varies by 20° from the optimum angle, the solar collectors will receive about 10% less total annual solar radiation.
Frost/Freeze Protection
An Open Circuit system does not have freeze protection and is not suitable for installation in areas prone to freeze conditions. Freeze conditions occur below 5°C (41°F). This system has NO WARRANTY for freeze damage. In areas that are prone to frost / freezing, a Closed Circuit system should be used.
Solar Boosting
In-Tank Boosting
An isolating switch is installed in the electrical meter box for an electrically in-tank boosted model. This should be left switched on to allow the booster heating unit to operate if required. The booster heating unit is for heating the water at times of low solar energy gain, such as during very cloudy or rainy weather, or during the colder months. The booster heating unit will only activate if heating is required and power is available from the switchboard. When the water is below the thermostat setting, the booster heating unit will turn on and heat the water. The booster heating unit will automatically turn off when the temperature of the water reaches the thermostat setting. If the water temperature drops below the setting again the booster will re-activate.
In-Series Gas Boosting
An in-series gas booster (also known as a continuous flow gas booster) can be installed between the solar water heater and the hot outlets in the house. This booster should be permanently active. The booster senses the temperature of the water passing through it: if the water temperature is above its temperature setting it does nothing; if below it will automatically heat the water up to the preset outlet temperature setting. This gas booster ensures hot water delivery for a variety of hot water demands without the need for user intervention while enabling maximum solar energy contribution to the water heating. For more information on this booster, consult the owner’s manual for the product.
Over-Temperature Protection System
The 302LCSD Open Circuit Series system has a ‘TRV’ thermosiphon restrictor valve located between the cold inlet of the tank and the cold inlet of the collectors. This valve restricts the flow through the collectors when the tank has reached a sufficiently high temperature.
Australian Government Incentives: Small-Scale Technology Certificates (STCs)
Government Incentives for Going Solar
Save with Small-Scale Technology Certificates (STCs)
Investing in solar energy or energy-efficient water heating has never been more rewarding. Thanks to the Australian Government’s Renewable Energy Target scheme, you could be eligible for financial incentives in the form of Small-Scale Technology Certificates (STCs). These certificates help reduce the upfront cost of approved systems like solar power, solar hot water, and heat pump water heaters.
What Are STCs and How Do They Work?
STCs are created when you install an eligible system. They can be:
- Traded or sold on the open market, or
- Exchanged as an upfront discount to reduce the purchase price of your new Solahart system, often saving you thousands of dollars.
Rather than managing the certificates yourself, most Solahart dealers offer the value of the STCs as a point-of-sale discount, making it easier and faster to access the benefit.
How Are STCs Calculated?
The number of STCs your system may be eligible for is based on several key factors:
- System size and model
- Your installation location (Australia is divided into solar zones)
- The amount of renewable electricity generated or displaced over a system’s lifetime
- The deeming period, which runs from the installation year to 31 December 2030
- The market value of each STC (which varies based on supply and demand)
For solar hot water and heat pumps, STCs represent electricity displaced by heating water without using the grid.
For solar power, STCs represent the renewable energy your system is expected to produce over a maximum deeming period.
Why Act Now?
As we get closer to the 2030 deadline, the deeming period shortens, which means fewer STCs will be available each year. This directly affects how much you can save. The longer you wait, the lower the financial incentive becomes.
Example STC Value Comparison (Zone 3)
Based on $36 per STC and subject to change.
| Year of Installation | Solar Power (6.6kW) | Savings | Solar Hot Water (302L) | Savings |
| 2025 | 49 STCs | $1,764 | 16 STCs | $576 |
| 2026 | 41 STCs | $1,476 | 14 STCs | $504 |
| 2027 | 33 STCs | $1,188 | 11 STCs | $396 |
| 2028 | 24 STCs | $864 | 8 STCs | $288 |
| 2029 | 16 STCs | $576 | 5 STCs | $180 |
| 2030 | 8 STCs | $288 | 2 STCs | $72 |
| After 2030 | 0 STCs | $0 | 0 STCs | $0 |
Make the Most of Your Solar Investment
STCs are available in every state and territory, and the team at Solahart makes it easy to understand your eligibility and maximise your return. With over 70 years of experience, we take the guesswork out of incentives and help you take control of your energy bills from day one.
^Eligibility criteria apply. Contact your local Solahart expert to find out how many STCs your system may qualify for.
-
Terms and Conditions
^Under current regulations, government incentives apply in the form of Small-Scale Technology Certificates (STCs) that can be used to reduce the upfront cost of going solar. STC values are subject to change and reduce every year until they run out in Jan 2030.
Solahart 302SP
The Solahart 302SP is designed for medium-sized households, combining high-capacity solar water heating with corrosion-resistant technology. With its closed-circuit thermosiphon system, it’s perfect for areas with harsh water conditions.
Solahart 302SP Solar Water Heater: Key Attributes
Why the 302SP system is a smart choice
The Solahart 302SP is a solar hot water solution for medium-sized households of 3-5 people. Featuring a 302L tank, this system provides ample hot water while using closed circuit thermosiphon technology for superior corrosion protection, making it perfect for harsh water conditions. The system includes a TRV valve for safe operation and Super Shield Enamel for long-lasting durability. The SP Free Heat Series offers significant energy savings, with up to 80% reduction in water heating costs, all while reducing your carbon footprint.
Key Features:
- Capacity: 300-Litre tank, ideal for medium households (3-5 people).
- Closed Circuit Thermosiphon: Corrosion-resistant solar-powered water heating.
- TRV Valve: Pressure relief valve for smooth operation.
- Super Shield Enamel: Advanced corrosion protection for long-term durability.
- Energy Efficient: Save up to 65% on water heating costs.#
- Reduced CO2 Emissions: Save up to 2.3 tonnes of CO2 annually.#
Warranty:
- 10-year warranty on the collector and tank.*
- 5-year warranty on parts and labour.*
Collectors:
- 2 x SP Collectors - for efficient performance in medium to high solar gain areas.
Free Heat - 300F
How Roof Top Solar Systems Work Solar Operation
The 302SP solar system has its vitreous enamel lined solar storage tank installed on the roof directly coupled to the solar collectors. In the Closed Circuit Series, heat is absorbed by the collector and passed to the ‘Hartgard’ heat transfer liquid inside the collector. As the temperature of the ‘Hartgard’ increases, the hot fluid rises up through the collector by the Natural Thermosiphon Principle, into the heat exchanger jacket around the potable water storage tank. Here, the heat is transferred to the potable water, cooling the ‘Hartgard’ fluid. The cooler fluid is then forced back down into the collectors through the displacement action of further hot fluid rising up into the heat exchanger jacket.
Orientation of Solar Collectors
To help maximise system performance, solar collectors should be installed with an optimum orientation facing true north (in the southern hemisphere) or true south (in the northern hemisphere). Always check for true north or true south using a compass or other suitable device.
To help maximise system performance, solar collectors should be installed with an optimum inclination. This is equal to 90% to 100% of the local latitude angle when collectors are oriented within 60° of true north or true south, and between 10° and 20° if the collectors are oriented between 60° and 90° from the optimum orientation. Generally, improved summer performance is obtained from an angle of inclination less than the optimum angle and improved winter performance is obtained by an angle of inclination greater than the optimum angle. If the angle of inclination varies by 20° from the optimum angle, the solar collectors will receive about 10% less total annual solar radiation.
Frost/Freeze Protection
Solahart Closed Circuit Systems are protected against freezing or harsh water conditions by our exclusive ‘Hartgard’ fluid. ‘Hartgard’ is a blue, non-toxic, propylene glycol fluid which, when mixed with water, provides the Heat Transfer Fluid contained in the solar collectors and the heat exchanger jacket around the tank. ‘Hartgard’ is used to lower the freezing temperature of the Heat Transfer Fluid and so provides protection against freezing (Note: for the correct % of Hartgard in the Heat Transfer Fluid, refer to the section on Frost / Freeze Protection). ‘Hartgard’ is a special food grade solution and is the only solution permitted to be used in the closed circuit systems. Hartgard has been approved by the National Health and Medical Research Council of Australia.
Solar Boosting
In-Tank Boosting
An isolating switch is installed in the electrical meter box for an electrically in-tank boosted model. This should be left switched on to allow the booster heating unit to operate if required. The booster heating unit is for heating the water at times of low solar energy gain, such as during very cloudy or rainy weather, or during the colder months. The booster heating unit will only activate if heating is required and power is available from the switchboard. When the water is below the thermostat setting, the booster heating unit will turn on and heat the water. The booster heating unit will automatically turn off when the temperature of the water reaches the thermostat setting. If the water temperature drops below the setting again the booster will re-activate.
In-Series Gas Boosting
An in-series gas booster (also known as an continuous flow gas booster) can be installed between the solar water heater and the hot outlets in the house. This booster should be permanently active. The booster senses the temperature of the water passing through it: if the water temperature is above its temperature setting it does nothing; if below it will automatically heat the water up to the preset outlet temperature setting. This booster ensures hot water delivery for a variety of hot water demands without the need for user intervention while enabling maximum solar energy contribution to the water heating. For more information on this booster, consult the owner’s manual for the product.
Over-Temperature Protection System
The Closed Circuit Series solar water heaters have a means of controlling the maximum temperature of the water in the storage tank. These systems may be installed with a ‘HartStat’ valve located between the hot outlet of the collectors and the inlet to the tank heat exchanger. This valve closes when the tank has reached a sufficiently high temperature, thereby preventing further heat transfer to the tank, and thus limiting its temperature.
Solahart PowerStore
Why choose Solahart PowerStore®
Introducing Solahart PowerStore®, Australia’s first solar-smart electric water heater.
Solahart PowerStore® works with your solar power panels to capture excess solar energy and turns it into hot water rather than sending it back to the grid.
It's similar to a home battery in that it stores energy for later use, but it's more affordable. And because it minimises the amount of power you draw from the grid, it's a great way to reduce your energy bills.
Control
Maximise your solar power and stop worrying about low feed-in tariffsAssurance
Trust Solahart. Australia’s solar energy experts for over 65 years
Affordable Energy Storage
Get the benefits of home energy storage for a lower cost than a batterySolahart Warranty
Rest easy with a 10-year tank warranty for extra peace of mindMake the most of your sunshine
If the power generated from your solar panels isn’t used immediately, it’s sent back to the grid. Solahart PowerStore® is designed to intelligently harvest this excess power to generate hot water.
Conventional electric water heaters draw maximum power when their heating element is switched on. This usually happens in the morning and evening when solar panels are not fully productive, so hot water is mainly heated by power from the grid rather than using solar energy. PowerStore® monitors your electricity usage during the day and then diverts any excess solar power that is not being used by household appliances towards your water heater, rather than allowing it to be fed back into the grid.
# Solahart Warranty Details: 10/3/3 warranty. 10-year cylinder supply, 3-year cylinder labour, 3-year parts supply including labour; applies to a single family domestic dwelling only. For full details see Owner’s Guide & Installation Instructions.
A Water Heater Like No Other
Solahart PowerStore® is different to conventional water heaters in three important ways.
- It is designed to intelligently interact with your solar panels to divert excess solar power when it’s available for maximum efficiency.
- Unlike a standard water heater, it can work at varying power levels, so it is better suited to the variable power delivered from solar energy.
- It can heat water gradually to take advantage of the sunniest parts of the day.
See How it Works
Solahart PowerStore® Part 1: How Solar Power Works
Solahart PowerStore® Part 2: Heating Water With Solar Power
Solahart PowerStore® Part 3: Introducing PowerStore
¹Enhancing of your solar investment will vary depending upon the size of your solar power system, the amount of excess solar power available to the Solahart PowerStore system, your feed-in tariff and your hot water tariff.
*Solahart Warranty Details: PowerStore: 10/3/3 warranty; 10-year cylinder supply, 3-year cylinder labour, 3-year parts supply including labour; applies to a single-family domestic dwelling only. For full details see Owner’s Guide and Installation Instructions. Solar Ready: 10/3/2 warranty; 10-year cylinder supply, 3-year cylinder labour, 2-year parts supply including labour; applies to a single-family domestic dwelling only. All other applications have a 3/1/1 warranty; 3-year cylinder supply, 1 year parts supply, 1 year labour.
Boosted NSW Government Incentives for Selected Heat Pumps
Boosted NSW Government Incentives for Selected Heat Pumps
Unlock Boosted NSW Government Incentives for Selected Heat Pumps
Now expanded to include Metro NSW residents!
For a limited time and while stocks last, eligible NSW residents can take advantage of boosted NSW Government incentives on selected Solahart Heat Pumps.
If eligible, your savings may depend on many factors, including the model type purchased, whether you are replacing a gas or electric system, your postcode, and your system size.
These boosted incentives are strictly limited in number, so contact your local Solahart dealer today to confirm your eligibility and potential savings. Installation must be completed by June 30th 2025.
Electric Replacement
| Model Number | System Size | Number of ESC's | Electric Replacement Boosted ESC Amount | Total Electric Replacement Boosted ESC Amount |
| 180HAV | Medium | 26 | $39.06 | $1,015.56 |
| 180HDC | Medium | 26 | $39.06 | $1,015.56 |
| 270HAV | Medium | 27 | $39.06 | $1,054.62 |
| 270QDR | Medium | 27 | $39.06 | $1,054.62 |
| 280HER | Medium | 27 | $39.06 | $1,054.62 |
| 325HAV | Medium | 24 | $39.06 | $937.44 |
Gas Replacement
| Model Number | System Size | Number of ESC's | Electric Replacement Boosted ESC Amount | Total Electric Replacement Boosted ESC Amount |
| 180HAV | Medium | 12 | $59.04 | $708.48 |
| 180HDC | Medium | 12 | $59.04 | $708.48 |
| 270HAV | Medium | 12 | $59.04 | $708.48 |
| 270QDR | Medium | 12 | $59.04 | $708.48 |
| 280HER | Medium | 13 | $59.04 | $767.52 |
| 325HAV | Medium | 9 | $59.04 | $531.36 |
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Terms and Conditions
*Eligibility criteria applies. Limited time offer available while stocks last to eligible NSW residents only on selected Solahart Heat Pumps. The number of certificates that can be created per system is based on its geographical location (zone) and varies with the type, size and model of the system installed. The value of an Energy Saving Certificate (ESC) is not fixed and varies depending on market factors. These calculations are based on a certificate value of $39.06 in Zone 3. The boosted ESCs are only available in NSW within Zone 3. Under current regulations, NSW Government incentives apply in the form of ESCs that can be used to offer a discount on the purchase of a solar or heat pump water heater (if eligible, conditions apply). ESCs have a variable market value and are subject to change. Installation must be completed by June 30th 2025.
^72 Months Interest-Free is only available for Solahart residential product purchases over $5,000. Available to approved applicants only and subject to completion of a satisfactory credit check upon application. A monthly account fee of $9.95 applies, and a one-off establishment fee may apply for new customers. Paying only the minimum monthly repayment may not repay the purchase within the interest free period. Any balance outstanding will be charged at the applicable standard variable interest rate of 25.9% per annum, as at 1 June 2023. Interest, fees and charges are subject to change. Terms & Conditions apply and are available on application. Additional charges may apply; see your contract for further details. Credit provided by Zip Money Payments Pty Ltd (ABN 58 164 440 993, Australian Credit Licence Number 441878).
Incentives For Residential Batteries In NSW
Incentives For Residential Batteries In NSW
NSW Government Changes to NSW battery incentives from 1 July 2025
The NSW Government battery discount can be claimed for battery installations up until Monday 30 June 2025. This discount cannot be combined with the Australian Government’s Cheaper Home Batteries Program discount which starts from Tuesday 1 July 2025. The NSW battery installation discount will no longer be available after 1 July 2025. However, the incentive to connect your battery to a Virtual Power Plant will increase from 1 July 2025 and can be combined with the Cheaper Home Batteries Program.The NSW Government home battery incentive program offers significant savings for residents and businesses, but is now only available until 30 June 2025. Eligible participants could receive between $770 and $1150 and $1600 and $2400 off the upfront installation cost of a household battery for homes and businesses with existing solar systems.
NSW Government Battery Incentive Details
Unlike a rebate, the discount on the installation cost of your battery is provided as an incentive to an accredited supplier. The accredited supplier will pass on the discount to you via your chosen local installer.
The incentive is proportional to the usable capacity of the battery in kilowatt-hours (kWh). Larger batteries will receive a larger incentive. If you’re eligible and until 1 July 2025, discounts range between:
- $770 and $1150 when you install a new 6.5 kWh battery
- $1600 and $2400 when you install a new 13.5 kWh battery
For homes and businesses without solar, the incentive can be included in a quote for a new solar and battery system installation.
The NSW Government battery discount can be claimed for battery installations up until Monday 30 June 2025. This discount cannot be combined with the Australian Government’s Cheaper Home Batteries Program discount, which begins on Tuesday 1 July 2025. From 1 July 2025, this NSW battery installation discount will no longer be available.
NEW: Larger incentive to connect to a Virtual Power Plant (VPP)
The incentive to connect your battery to a Virtual Power Plant will increase from Tuesday 1 July 2025.
This will almost double the upfront incentive you’ll receive. For example, the payment you receive for a 27 kWh battery will increase from around $800 to around $1,500.
This incentive can be combined with the Australian Government’s Cheaper Home Batteries Program discount.
For more information, visit the NSW Government page on Incentives for Residential Batteries.
Eligibility for NSW Battery Rebates & Incentives
To qualify for these incentives, you must:
- Have an existing solar system or be purchasing rooftop solar.
- Purchase a new battery.
- Use a certified installer
- Meet the requirements for eligible batteries.
How to Get Started
The battery incentives are available now. Contact your local Solahart dealer today to arrange an in-home quote.
Range of Batteries at Solahart
Adding solar battery storage to your solar power system allows you to store your unused energy so you can use it when you need it (at night, on low-sunlight days, when utility rates are more expensive or during blackouts). Batteries in our range include Tesla Powerwall, SolarEdge Home Battery, and GoodWe batteries.
Learn about our full range of energy storage solutions here.
Benefits of Installing Batteries in NSW
- Enhanced Grid Reliability: More batteries across NSW will make the grid more reliable and stable.
- Reduced Fossil Fuel Reliance: Helps reduce reliance on fossil fuels during peak demand periods.
- Environmental Impact: Contributes to reducing NSW’s emissions by 70% by 2035 and achieving net zero by 2050.
Wondering if a battery is right for you? Learn about the six factors to consider if you're thinking of installing a home battery storage system.
Get smart, switch to Solahart today
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Does the incentive money get paid to the customer or to Solahart?
The incentive is not a direct rebate to customers. It’s provided as an upfront discount to the accredited supplier that installs the battery and then it is passed onto the customer.
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What is an accredited supplier?
Accredited suppliers are also known as Accredited Certificate Providers (ACPs). These are businesses that have been accredited by the scheme administrator (IPART) to conduct specific installations and upgrades under the Peak Demand Reduction Scheme (PDRS). Solahart is an accredited supplier.
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Are there any requirements to be eligible for the battery incentives?
Yes, you’ll need to have solar installed on the premises, and use an accredited supplier under the Peak Demand Reduction Scheme (PDRS) to install the battery. If you don’t have solar, you can have the incentive priced into a new solar and battery system installation.
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What battery storage capacities are eligible for this incentive?
Batteries with storage between 2 and 28 kWh are eligible for this incentive. The incentive provided is proportional to the usable capacity of the battery.
Most households will find batteries well below 28 kWh to be sufficient for their needs. The national average energy use for a 5-person household is 25 kWh per day.
Some batteries can also be stacked to enable you to increase capacity later. Your local Solahart Dealer be able to provide more information on what capacity is best suited to your needs.
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Can I receive an incentive for a battery that is already installed?
The installation incentive is only available for new battery installations.
Batteries already installed may be eligible to receive a Virtual Power Plant (VPP) incentive, provided the battery has 6 years of the manufacturer's warranty remaining and meets the equipment requirements. Find out more here.
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Can I receive the incentive if I am off-grid?
No. The Peak Demand Reduction Scheme (PDRS) aims to reduce the load on the electricity grid. Off-grid batteries do not directly help reduce the load on the grid.
Solahart Atmos Eco 180HDC
Compact and efficient, the Solahart Atmos Eco 180HDC is a smart alternative to small electric water heaters, offering reliable performance even in colder climates.
Solahart Atmos® Eco 180HDC
Key Attributes
Why Atmos Eco is a smart choice
The Solahart Atmos® Eco 180HDC Heat Pump is a new-generation, 178-litre renewable water heater ideal for smaller households. Engineered to perform in a wide range of Australian conditions, it uses R513A refrigerant with a low Global Warming Potential (GWP) and advanced microchannel technology to provide fast, uniform water heating, even in ambient temperatures as low as -7°C.
This system is a smart, energy-efficient choice for homes where installing a conventional solar water heater may not be practical. It draws heat from the air to warm water without relying on direct sunlight, helping reduce your water heating energy use and carbon emissions.
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*Warranty Details
- 7 years cylinder supply
- 3 years cylinder labour
- 3 years sealed system supply and labour
- 2 year parts supply and labour
*The warranty periods above apply to installations in a single-family domestic dwelling only. For further details, please refer to the Owner’s Guide. See the Solahart warranty set out in the Owner’s Guide and Installation Instructions. For more details call Solahart Australia 1300 769 475.
Without limiting the warranty periods shown above, a 5-year whole-of-product warranty applies (inclusive of labour incurred in respect of a valid claim under this warranty or the Australian Consumer Law in relation to a heat pump water heater) to the installation of a Solahart Atmos Eco 180HDC Heat Pump where:
a) A hot water rebate has been received under Solar Victoria’s Solar Homes Program for a heat pump water heater installed from 1 July 2023, and / or
b) Victorian Energy Efficiency Certificates (VEECs) have been created for a heat pump water heater installed from 1 February 2025, or
c) Energy Savings Certificates (ESCs) have been created for a heat pump water heater installed from 1 December 2025.
For further details, call 1300 769 475. Proof of receipt of the rebate and / or proof of VEECs or ESCs being created, i.e. installation quote showing number of VEECs or ESCs and dollar value, plus proof of purchase (as applicable) must be produced at the time of the service call.All other applications have a 3/1/1 warranty; 3-year cylinder supply, 1-year cylinder labour, 1-year parts, including labour.
1 See datasheet for detailed specifications.
2 Energy savings of up to 70% in Zone 3 based on TRNSYS modelling on hot water energy consumption when replacing an electric water heater of a similar size with a Solahart Atmos® Eco 180HDC Heat Pump. Any savings will vary depending upon your location, type of water heater being replaced, hot water consumption and fuel tariff.
Explore more Heat Pumps
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The efficient heat pump technology extracts energy from the surrounding air. Ambient warmth is used to convert the refrigerant within the sealed system into a gas. The gas is then compressed to generate even more heat, which then heats the water in the tank. What’s more, this process can work day or night, in sunshine and rain, all year round.
When hot water is drawn off, and cold water enters the tank, the thermostat activates the fan and the compressor. The operation of the compressor causes a pressure difference within the sealed refrigeration system. This pressure difference causes the refrigerant to move around the sealed system. The refrigerant enters the evaporator as a liquid. As the refrigerant absorbs heat from the atmosphere, it changes state, at low pressure, from a sub-cooled liquid to a super-heated vapour or gas (evaporates). The vapour then enters the compressor and obtains more heat, known as heat of compression, and passes into the heat exchanger as a super-heated vapour at high pressure.
As the refrigerant passes through the microchannel heat exchanger wrapped around the storage cylinder, it gives off heat, which is absorbed by the water inside the cylinder. As the refrigerant gives off heat, it cools and changes state back into a liquid (condenses). The refrigerant then enters the evaporator again, and the cycle is repeated. The resulting cold air is then discharged through the air outlets back into the atmosphere. This process continues whenever heating is required until the water in the storage tank reaches its hot water temperature set point.
Introducing Solahart Atmos Eco 180 Heat Pump
* An average Coefficient of Performance (COP) value of 4.9 was measured under test conditions with an ambient air temperature of 19˚C/15˚C (Dry Bulb/Wet Bulb) over the entire heat-up process, heating of the water from 10˚C to 60˚C during water heater operation and a power supply of 240 V~ 50 Hz. The Heat Pump average heating capacity in Watts and its water heating capacity in Litres / hour were calculated from the results of this test. The heat pump water heater performance tests were conducted to AS/NZS 5125.1:2014. Note that the actual COP of the product at any given time will be impacted by a number of factors, including the ambient air and cold-water inlet temperatures at the place of installation and time of day/season of operation.
The Coefficient of Performance (COP) for a heat pump is the ratio of how much useful heat it produces for water heating to the power input into the water heater. The higher the COP number, the more efficient the heat pump is.
