Solar Victoria: Solar Homes Program
Solar Victoria: Solar Homes Program
Extra Savings for Victorian Households
The Solar Homes Program in Victoria is dedicated to helping households reduce energy costs, combat climate change, and promote a renewable energy future. This program offers substantial support for eligible Victorian residents to maximise their savings with solar solutions.
Under the Solar Homes Program, eligible Victorian households can benefit from various rebates, including solar panel PV rebates and hot water system rebates.
Rebate Amount Summary
| Solar Panel Rebate | Solar panel rebates of up to $1,400 plus the option of an interest-free loan are available for existing homes and homes under construction. |
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| Hot Water Rebate | If you are a Victorian homeowner, you may be eligible for a hot water rebate of up to $1,000 on an eligible heat pump or solar hot water system. From 1 July, households that choose an eligible hot water system with local content will receive a higher rebate of up to $1,400. The existing $1,000 rebate will remain for other eligible hot water systems. |
Hot Water Rebate
The hot water rebate helps reduce the upfront costs of installing efficient heat pumps or solar hot water systems, cutting down greenhouse gas emissions and energy use.
If you are a Victorian homeowner, you may be eligible for a hot water rebate of up to $1,000 on an eligible heat pump or solar hot water system.
From 1 July, households that choose an eligible hot water system with local content will receive a higher rebate of up to $1,400.
The existing $1,000 rebate will remain for other eligible hot water systems.
Without limiting the original periods of the product warranty, a 5-year whole-of-product warranty will be applied to the water heater where a rebate has been received under Solar Victoria’s Solar Homes Program for an installation from 1st July 2023. For further details, call your Solahart Dealer on 1300 721 984.
Note: The hot water rebate is calculated after any other discounts (including STC and VEEC financial benefits) have been applied to the purchase and installation price. It is a 50% rebate on the remaining amount up to the value of $1000 or $1400 for eligible listed products with local content.
How do I claim the rebate if I need an emergency installation?
If your hot water system breaks down or is unsafe, you can install a replacement without waiting for eligibility confirmation. Eligibility must be proven soon after installation. Your local Solahart Dealer can guide you through this process.
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Should I install a solar battery? Here are six factors to consider.Solar Panel (PV) Rebate
Solar Victoria provides a rebate of up to $1,400 for the installation of solar panel (PV) systems. These rebates are offered to Victorians with existing homes or homes under construction. There are also solar rebates for rental properties.
Rebates are released each month according to the scheduled rebate release dates. You can reduce your upfront cost further by applying for an interest-free loan to match the rebate amount.
How to Apply for the Rebates
The Victorian Solar Homes Program offers financial assistance through rebates, making it easier for households to transition to solar energy. Contact your local Solahart Dealer for assistance with selecting the best solar system for your needs and help with the application process. Call 1300 721 984 for more details.
For more information, visit the Solar Victoria website
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Eligibility Criteria for PV Rebate
As a Victorian householder, you could receive a solar panel (PV) rebate if:
- You are the owner-occupier of an existing property or the owner of a home under construction where the system is to be installed.
- The combined household taxable income of all owners is less than $210,000 per year.
- The value of the property is under $3 million (for an existing home or when construction is complete.
- The property address has not previously received a solar panel (PV) or solar battery rebate under this program.
- The property address has not had a solar panel (PV) system installed in the last 10 years.*
- You received a Solar Homes rebate and/or loan, but have moved house. You can apply for another incentive as an owner-occupier at your new address if the property has not received these rebates before.
*If you are participating in the Premium Feed-in Tariff scheme, you should consider whether you will be better off if you replace your existing system before the scheme ends on 1 November 2024. -
Eligibility Criteria for Hot Water Rebate
As a Victorian householder, you could receive a hot water rebate if:
- You are the owner-occupier of an existing property where the system is to be installed.
- The household taxable income of all owners combined is less than $210,000 per year.
- The value of the property is under $3 million.
- The property address has not already received a hot water or a solar battery rebate under the Solar Homes Program.
- The hot water system to be replaced is at least 3 years old from the date of purchase.
- You received a Solar Homes rebate and/or loan, but have moved house. You can apply for another incentive as an owner-occupier at your new address if the property has not received these rebates before.
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Eligibility Criteria for Solar Battery Loan
As a Victorian householder, you could be eligible for a solar battery loan if you meet the following eligibility criteria:
- You are the owner-occupier of an existing property where the system is to be installed.
- The combined household taxable income of all owners is less than $210,000 per year.
- The property is valued at under $3 million.
- The property address has not previously received a solar battery rebate.
- The property has a solar panel system with an inverter capacity equal to or greater than 5 kw,or will have one installed in conjunction with the solar battery installation.
- The energy storage solution has a capacity equal to or greater than 6 kWh and is listed on Solar Victoria’s battery product list, and the property does not have an existing energy storage system.
- Pre-approval is obtained from your Distributed Network Service Provider (DNSP) to safely connect a battery to the grid.
- The owner/s agree to receive information from their Distribution Network Service Provider about taking part in battery trials to maximise the value households get from them.
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How much does the hot water rebate cover?
The hot water rebate will cover up to 50 per cent of the cost of a hot water system, with properties eligible for a rebate of up to $1000.
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What qualifications must a hot water retailer have?
An authorised hot water retailer must complete all hot water installations. Retailers must:
- Ensure an appropriately licensed plumber undertakes plumbing work and that a Plumbing Certificate of Compliance is supplied to the householder.
- Ensure any electrical work is undertaken by an electrician who holds a current Class A Electrical Licence issued by Energy Safe Victoria and that a Certificate of Electrical Safety, certified by a licensed inspector registered with Energy Safe Victoria, is supplied to the householder.
- Provide a minimum of five years' warranty on all major components of your solar hot water system.
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Do I need to have a solar PV system installed to access the hot water rebate?
No, you can install any system on the Hot Water Approved Products list.
This means that households that have no available or suitable roof space to install PV or solar hot water, such as apartments and townhouses, will still be able to access the program to install a heat pump hot water system.
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I have received a hot water rebate. What other rebates can I apply for?
Eligible owner-occupier households that have received a hot water rebate can also apply for a solar PV rebate and loan, as well as a battery loan.
Learn more about applying for a solar panel PV rebate.
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Can renters or rental providers apply for a hot water rebate?
No, only owner-occupier households are eligible for a hot water rebate.
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I did not get a rebate when I installed my hot water system. Can I apply for a rebate now?
No. If you have already installed a solar system, you will not be able to claim a rebate after installation.
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I received a hot water rebate but I have moved house. Can I apply for a rebate again for my current property?
Yes. If you have moved house, you can apply for a hot water rebate, a solar PV rebate, and a battery loan as the owner-occupier of the new property.
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Is there a maximum/minimum size solar PV system that is eligible for the rebate?
No, the Victorian Government has said it will provide a rebate on the cost of solar panel (PV) systems, up to a maximum rebate value. You will need to speak to your Solahart Dealer to ensure the size of your system meets any other restrictions that may be in place.
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NSW Solar Rebates 2025: Virtual Power Plant (VPP) Incentives
NSW Solar Rebates 2025: Virtual Power Plant (VPP) Incentives
Extra Savings for NSW Households
Virtual Power Plants (VPPs) are transforming how solar and battery systems operate by connecting multiple homes and businesses into a shared energy network. In NSW, homeowners and small businesses with eligible battery systems can receive financial incentives for joining a VPP and allowing their stored energy to support the grid during peak periods.
How VPPs Work
A Virtual Power Plant works by aggregating the energy stored in individual home or business batteries. When the grid experiences high demand or instability, the VPP operator remotely accesses the stored energy to supply the network. This coordinated response helps:
- Stabilise the grid
- Reduce peak demand
- Enhance renewable energy use
- Lower costs for participants through energy credits or incentives
Participants maintain control over their systems and benefit from both self-consumption and grid contributions.
Available Incentives in 2025
In NSW, participants in approved VPP programs can earn between $250 and $400 for enrolling their battery into a supported VPP. Additional benefits may include:
- Ongoing bill credits or performance-based payments
- Enhanced control over energy usage via smart apps
- Priority access to other energy programs and services
Eligibility Criteria
To be eligible for a VPP incentive in NSW:
- You must be a resident or small business owner in NSW
- You must own a compatible battery system (e.g. Tesla Powerwall, Sonnen, LG Chem, etc.)
- The battery must be connected via an approved VPP provider or energy retailer
- The system must meet CEC installation standards and allow remote control for VPP access\\
How to Join a VPP and Claim Incentives
- Install a Compatible Battery – Ensure your battery is VPP-ready and installed by a CEC-accredited provider.
- Choose a VPP Provider – Review offers from energy retailers and third-party VPP operators in NSW.
- Sign Up and Connect – Agree to the VPP terms, which outline when and how your battery will be used.
- Receive Incentives – Once enrolled, you’ll receive the one-off bonus (up to $400) and potential ongoing bill savings.
Popular providers with VPP programs in NSW include Origin Energy, AGL, Amber Electric, and Simply Energy.
Terms and Conditions
- Incentive amounts vary by provider and may be linked to system size or usage profile.
- You retain ownership of your battery and can typically opt out with notice (check provider terms).
- Your system must remain connected and active in the program to receive full benefits.
- Participation may affect your battery’s availability for backup power, depending on configuration.
How Much Could You Save?
In addition to the upfront $250–$400 sign-up bonus, many VPP participants report ongoing bill reductions of $200–$500 per year, depending on energy usage and the VPP’s operating model.
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NSW Solar Rebates 2025: Peak Demand Reduction Scheme (PDRS)
NSW Solar Rebates 2025: Peak Demand Reduction Scheme (PDRS)
Extra Savings for NSW Households
Battery Incentives for NSW Residents - Now Available!
The NSW Government has launched a new home battery incentive program offering significant savings for residents and businesses. Eligible participants can 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.
Maximise Solar Energy with Peak Demand Reduction Scheme (PDRS) Incentives
Homes and businesses with rooftop solar can benefit from the Peak Demand Reduction Scheme (PDRS) incentives, promoting the installation of residential battery storage. These incentives can help maximise the use of solar energy and significantly reduce electricity bills.
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.
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, 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.
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, such as Solahart.
- Meet the requirements for eligible batteries.
Availability and How to Get Started
The battery incentives are available now. Contact your local Solahart dealer today to arrange an in-home quote and ensure you’re among the first to redeem all available incentives.
For more information, visit the NSW Government page on Incentives for Residential Batteries.
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.
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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.
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Solahart Atmos 325HAV
A high-capacity, energy-efficient heat pump ideal for larger households, the Solahart Atmos 325HAV delivers reliable hot water without the need for roof-mounted solar collectors.
Solahart Atmos Heat Pump: Key Features
WHY ATMOS IS A SMART CHOICE
The Solahart Atmos® 325HAV is a 325-litre heat pump water heater designed to deliver reliable and energy-efficient hot water in locations where solar water heaters may not be suitable. It uses heat extracted from the surrounding air, much like a reverse cycle air-conditioner, making it an ideal replacement for traditional electric or gas systems, without the need for roof space.
Perfect for families, this system can reduce water heating energy use by up to 64% when compared to conventional electric models. With a sleek, low-mount design and discreet ground-level installation, the Atmos 325HAV is both space-saving and visually unobtrusive.
No roof-mounted solar collectors
Ideal for installations not suitable for traditional solar water heaters.Eligible for STCs
Solahart Atmos qualifies for Small-Scale Technology Certificates (STCs), helping you reduce the up-front cost of your purchase. (1)
Energy Efficient
Energy efficient water heating. Solahart Atmos uses less energy than a conventional electric water heaterReduced Energy Use
Water heating energy use may be reduced by up to 64% when replacing an electric water heater. (2)-
Disclaimers
(1) Small-scale Technology Certificates (STCs) are a financial benefit to encourage the installation of solar and heat pump water heaters provided under a Federal Government legislated scheme. STCs financial benefit value is subject to change. Your installation may be eligible. Please refer to www.solahart.com.au for further details.
(2) Energy savings of up to 64% shown is based on Australian Government approved TRNSYS simulation modelling of a Solahart Atmos 325HAV heat pump 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, 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.
(3) Harsh water regions – the Solahart Warranty may not apply to the water heater if it is connected to a water supply with: a Chloride content > 250 mg/L; or a pH < 6; or is scaling with a Saturation Index > +0.4; or is corrosive with a Saturation Index < -1.0.
† Warranty Details: 5/3/2 warranty; 5-year cylinder supply, 3-year labour on the cylinder, 2-year parts 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. All other applications have a 3/1/1 warranty; 3-year cylinder supply, 1-year cylinder labour, 1-year parts including labour.
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How Heat Pump Water Heaters Work
Solahart Atmos Heat Pump Water Heater delivers hot water by efficiently utilising a free and abundant source of energy - the heat that is locked in the air around us. Even on a relatively cold day, the air has some heat which is available to be transferred to a fluid. The secret is to make the fluid even colder than the air. You can see in the diagram at step 1, that liquid refrigerant begins at high pressure before being forced through an expansion valve (2). This sudden release of pressure cools the liquid to allow it to absorb heat from the surrounding air. This valve is designed to carefully regulate how much refrigerant passes through it.
On cold days, less refrigerant passes through; the smaller amount of fluid expands faster into the available space and cools to a lower temperature. On warmer days, more refrigerant is allowed to pass through - it doesn't need to cool down as much because the air has more available heat to transfer. As the cooled refrigerant passes up the coiled tubes, air is blown over the tubes to warm the refrigerant till it becomes a vapour (3). To make the heat pump more efficient, part of the air is actually drawn from around the motor. This helps cool the motor as well as reclaiming potentially wasted heat.
Next, the low pressure vapour needs to be compressed again to return it to its original pressure (4). The temperature has by now reached around 80ºC. From here the refrigerant is pumped to the heat exchanger where it passes down a series of narrow tubes (5). The cold water is pumped up an alternating set of tubes to allow it to absorb the heat. Each time water passes through the heat exchanger it emerges around 10-15ºC hotter. When all the water in the attached storage tank reaches its pre-set temperature, the heat pump switches itself off.
Electric Boosting
Ice may begin to form on the evaporator reducing the heat pump efficiency, when the ambient air temperature falls below 7°C and the heat pump has been operating for an extended period. At ambient air temperatures below 3°C to 5°C, the water heater deactivates the heat pump operation and switches to the booster heating unit. During this period the evaporator will defrost if necessary.
At ambient air temperatures above 45°C to 55°C, the water heater deactivates the heat pump operation and switches to the booster heating unit. The water inside the tank will be heated to a temperature of 70°C by the electric booster heating unit if heating is required. The temperature setting of the thermostat controlling the booster heating unit is not adjustable and is set at 70°C.
Freeze Protection
The water heater has a freeze protection system. The freeze protection system will protect the water heater from damage, by preventing ice forming in the waterways of the water heater, in the event of freezing conditions occurring.
If the ambient air temperature falls below 1°C and the heat pump is not operating, the system will operate the circulator periodically. During this freeze protection cycle, the circulator will operate for thirty (30) seconds and then rest for fifteen (15) minutes, before the cycle is recommenced. Water is circulated from the storage tank through the heat pump circuit, to prevent freezing in the connecting pipe work and heat pump module. The green LED will flash a series of four (4) flashes whilst the circulator is operating.
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.
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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.
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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.
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Terms and Conditions
^For a Solahart Solar Hot Water system or Heat Pump, each STC represents 1 megawatt-hour (MWh) of electricity displaced over a 10-year period. For a Solahart Solar Power system, each STC represents 1 megawatt-hour (MWh) of renewable electricity produced over a maximum deeming period. The number of STCs created varies with the size and model of the solar water heater or PV system and the region (or zone) in which the unit is installed. The value of an STC is not fixed and varies depending on market factors, and is subject to change.
