Click on your question and we will provide the answer.
The Triple Solar system
Costs, payback period, subsidies and financing
The Triple Solar system
How does the Triple Solar® system work?
The Triple Solar® system consists of Triple Solar® PVT heat pump panels in combination with a PVT heat pump.
The panels act as a source for the heat pump. The panels extract energy from the outside air, from sunlight and daylight. Watch the video for more information (subtitle language can be adjusted in the video).
What is a PVT panel?
The Triple Solar® panel has a heat exchanger at the rear that consists of aluminum fins with a copper pipe. A coolant: glycol (a kind of antifreeze) flows through the copper pipe of the exchanger. This absorbs the ambient heat and conducts it to the heat pump in the home. The heat pump converts this heat into usable heat for heating and hot water.
Because the heat pump panel is also equipped with a solar panel, it is possible to provide a building not only with heat and hot tap water, but also with electricity from one surface.
Which Triple Solar® systems are there and what are the differences?
When heating with a heat pump, we at Triple Solar® make a distinction between completely gas-free (all-electric) and a hybrid setup.
With all-electric, the central heating system is replaced with a water/water heat pump in combination with a calculated number of Triple Solar® PVT panels on the roof. This works with low temperature heating, for this you need a low temperature delivery system such as underfloor heating or low temperature radiators/convectors. In addition, your house must be sufficiently insulated.
Many homes are not immediately suitable for gas-free heating. For example, due to an old-fashioned delivery system or poor insulation. That is why we at Triple Solar® have developed a hybrid PVT heat pump to save gas. This heat pump works together with your current gas boiler. If it is no longer possible to heat your house with only the heat pump, the gas boiler will help. With this system you can save 60 to 80% on your gas consumption. The hybrid heat pump also comes with a calculated number of PVT panels for your roof.
We call this the no-regret solution. If at some point the house is suitable for gas-free heating, the hybrid Triple Solar® PVT heat pump can always be expanded to an all-electric system. The investment in the hybrid PVT heat pump is therefore not lost.
What are the advantages of the Triple Solar® PVT System?
The Triple Solar® heat pump extracts heat through the panels on the roof, eliminating the need for a noisy outdoor heat pump unit. The heat pump is installed inside your technical room. The sound produced by the pump is comparable to the sound of a refrigerator.
Furthermore, the Triple Solar® system is maintenance-free because it contains no rotating parts.
Based on tests, we have an expected lifespan of 25 to 30 years on the panels and we provide a 10-year warranty on all Triple Solar products.
In addition, the Triple Solar® panels provide both heat and electricity, work 24 hours a day and are suitable for any type of roof.
Furthermore, our panels have a high efficiency, so you can benefit from extra low electricity costs!
Can I also cool with the Triple Solar®-systems?
Triple Solar® has developed a cooling module to be able to actively cool together with the NIBE water/water heat pump. In this case, the delivery system (heating system in the house) and the PVT source are reversed and the heat from the house is actually released to the outside air.
Depending on your delivery system, the cooling experience is different. Convectors absorb heat from the air, causing the air in the room to drop in temperature. Instead of directly cooling the air, the mass of the house is cooled via underfloor heating.
I am interested in the Triple Solar® system, who can help me?
If you are interested in the Triple Solar® system, you should contact an installer. Fill in the registration form and mail it to the installer, the installer can assess the situation and prepare a quote. If you do not yet have an installer, you can use our contact form to ask for an installer with experience with the Triple Solar® system in your area.
It is of course also possible that you have or know an installer who has no experience with the Triple Solar® system. Then we would like to invite the installer for a free training (in the Netherlands).
Can I view the system somewhere?
There are currently several thousand homes in the Netherlands that have the Triple Solar® system. Many of our users are happy to show you how the system works in their home. So if you would like to take a look at a home with the Triple Solar® PVT system, it is best to contact us via the contact form. If you indicate where you live, we can help you get in touch with owners of a Triple Solar® system.
Is my house suitable for the PVT system with heat pump?
A home is suitable for an all-electric heat pump system if it has a ‘low temperature release system’ and sufficient insulation. This is necessary because a heat pump heats the central heating water to a lower temperature than regular gas central heating bodies. Examples of low-temperature release systems are: wall and/or underfloor heating and special low-temperature radiators/convectors.
Do the heating test
There is also a simple test to check whether your home is suitable for an all-electric or hybrid system. Lower the temperature of your current CV to 45-50°C. Keep a close eye on the temperature in your house during this period, especially in the morning after a cold night. If it gets warm enough in the morning in the house, there is a good chance that your house can be heated with a fully electric heat pump. If your house does not heat up quickly enough, it is best to opt for a hybrid system, which is always applicable and provides a gas saving of 60 to 80%.
Do I have to insulate my house first?
For both systems all-electric & hybrid applies > The best return is achieved if the house meets the current insulation standards. Of course, this automatically applies to new construction; for existing buildings, the house must have at least energy label C. A house with energy label C may not yet be called ‘green’, but the most important energy-saving measures have been taken. Think of cavity, floor and roof insulation and the use of at least HR++ glass.
There are several companies that specialize in insulating your house, but if you are a bit handy, you can also do a lot of insulating your house yourself.
What is the influence of the sun and how important is orientation to the south?
The Triple Solar® system does not depend on the sun for heat. The PVT panels extract heat from the outside air (80%) and from daylight (20%). The system does of course benefit from sunlight. The sun creates a higher source temperature, so that the heat pump requires less electricity to deliver usable heat. During the day and in the summer, the heat pump therefore works more economically than at night and in the winter. And although the system also works well on the north, it is (even) more economical when the panels are placed on the south. As far as the electricity yield is concerned, the following applies: more sun equals more electricity.
Can I heat with my existing radiators?
With the Triple Solar® PVT hybrid heat pump it is possible to heat your home with existing (older) radiators. The heat pump can heat up to 70°C and the gas boiler can step in when necessary.
With the all-electric setup, it is not recommended to heat with existing radiators. The heat transfer from the radiators is not sufficient to heat your home with the low temperature heating.
If you want to know whether your home is suitable for an all-electric system, watch this video.
Costs, payback period, subsidies and financing options
How much does the Triple Solar® system cost?
The price of the system depends on the situation. Would you like to know what it costs to install a Triple Solar® system in your home? Then contact an installer.
Click here if you want to know how to find an installer.
The costs for an all-electric PVT system with installation are on average €26,000*.
For the hybrid system (60-80% gas savings) you have to take into account an amount of 10 to 14 thousand euros. The price depends on the existing situation and any adjustments that need to be made.
The national ISDE subsidy of €4,200 for the heat pump and the VAT refund on PVT panels has been taken into account.
Do you want to know whether your house is suitable for an all-electric or hybrid system? click here.
What is the payback period and total cost of ownership?
The payback period depends on the size of the system and the gas price. On average, we see a payback time of 6 to 9 years on our systems. This is calculated on the basis of the installation prices of April 2022 and with a gas price of €1.50 per cubic meter and annual standing costs of €280.
Total cost of ownership
In many cases, the investment in the high-quality and sustainable Triple Solar® installation is often somewhat higher than in an air/water heat pump (with a comparable amount of PV panels), but the TCO is lower. The differences:
- No outdoor unit to be replaced after 8-10 years.
- No annual maintenance for which an appointment has to be scheduled.
- No nuisance from the noise of the outdoor unit, which can lead to complaints and aftercare (noise can worsen with age).
- Lower energy costs for the user also mean fewer complaints and aftercare.
What subsidy can I get in the Netherlands?
In the Netherlands there are a number of subsidies that you can obtain when purchasing a Triple Solar® heat pump with PVT panels. Firstly, you can claim the ISDE subsidy for existing buildings. The subsidy amount for a 3 or 6 kW heat pump is € 4,200, this subsidy will run until December 31, 2022. In addition, it is possible to reclaim the VAT paid on the panels, mounting materials, inverter and installation via your tax returns.
In addition to the two above subsidies, there are sometimes also municipality-dependent subsidies available. For more information, visit the Milieu Centraal website and complete the “Energy Subsidy Guide”. There you will get an overview of the possibilities in the field of subsidies and financing in your municipality.
Are there financing options?
Making your home more sustainable is strongly encouraged in the Netherlands, so there are a number of financing options available.
Firstly, it is possible to apply for an extra mortgage from the mortgage lender of your home. For example, you can pay part of the costs of the extra mortgage from the savings on your energy bill. The conditions differ per bank. We recommend that you contact the bank for more information.
Secondly, it is possible to apply for “The Energy Saving Loan”. Homeowners can take out a loan for energy-saving measures at a favorable interest rate.
In addition to the options just mentioned, there are many more options. To do this, visit the Milieu Centraal website and complete the “Energy Subsidy Guide”. There you will get an overview of the possibilities in the field of subsidies and financing in your municipality.
What is the effect of icing?
When the temperature drops to freezing point, it is real that ice will form on the PVT panels. This phenomenon is similar to frozen dew. This is never harmful to the installation. The thermal performance may decrease slightly (maximum 10%), but sufficient is still supplied to heat your home and tap water. The system is dimensioned accordingly. The risk of ice formation is greatest around the freezing point with dry air and little wind. During a few hours a year, the conditions are such that the electric element meets the heat demand. On an annual basis, this only happens for 43 hours during the night (NEN5060) in the Netherlands. New-build homes are so well insulated that the indoor temperature barely drops in such a case. Even if the heat pump is switched off for a while.
Do your panels also work in combination with other systems: solar water heater, buffer tank?
Firstly, the system is certainly suitable for a buffer tank. We also offer a buffer tank or boiler with our package. With an all-electric system, a buffer tank or boiler is an iced one and with a hybrid set-up, the buffer tank or boiler provides higher gas savings because the tap water can then also be heated by the heat pump.
We do not recommend installing the Triple Solar® system in combination with a solar boiler. Not because it is not possible, but because it is not interesting from a cost point of view. If you already have an existing system with solar water heaters and you would like to add our PVT panels with heat pump, that is possible. Discuss this with your installer, who can best help you with this.
If your installer does not know, let him contact us via the contact form.
Does the Triple Solar system also work with a heat pump other than the NIBE?
From our point of view, the system as we offer it with the Nibe or Alpha Innotec heat pump is the most optimal. Firstly, because we see these brands as the best on the market. In addition, Nibe’s software is tailored to our product. But if you do want to purchase another heat pump, that is possible, as long as it is a water-water heat pump. If you would like more information about this, it is best to contact your installer and the seller of the heat pump.
Can I also have your panels installed in the roof?
Our PVT panels cannot be installed in the roof. The reason behind this is to achieve the highest possible efficiency of the PVT panels. To obtain the best possible temperature transition, it is important that the thermal part of the panels, which is at the bottom, has enough airflow. However, a lot of attention is paid to the design of the panels. Would you like to see what the Triple Solar pvt panels look like? Then it is best to take a look at the website under the heading projects. There you will see various completed projects with the PVT System.