Immersion Heaters
PV self consumption
For monitoring, controlling and optimization of the self-consumption, there are optionsto integrate the pv system in smart home systems. Additional components allow for more applications.
PV heating element for buffer storage / hot water tank
Using surplus PV power for buffer storage tanks and hot water tanks
Eco-friendly heat source
Low maintenance costs
Self-consumption optimisation
Reduce heating costs and protect your heating system
Using a heating element in combination with surplus photovoltaic power (PV surplus utilisation) is a highly efficient and economically attractive way to put renewable energy to good use at home.
Why does it make sense to operate a heating element with PV surplus power?
Self-consumption optimization
A heating element enables you to make the most of your self-generated PV power, especially when no other electrical loads are running. Without a heating element, this surplus electricity would be fed into the public grid—usually at a low feed-in tariff. Generating heat in your own home is a direct and more economical way to use it.
Seasonal efficiency boost
In the summer months, the photovoltaic system often generates more energy than is needed. With a heating element, this surplus can be efficiently converted into hot water—ideal for daily use in the kitchen and bathroom or to support heating during the transitional seasons.
Sector coupling: electricity + heat
Linking the electricity and heat sectors in your home is a key step toward energy independence: the electricity you generate is used not only for electrical consumers, but also for heat supply—without relying on fossil energy sources.
Advantages of heating a buffer tank or hot water tank with a heating element
Increased self-consumption rate
- Reduces feed-in losses
- More of your own PV electricity is used directly
- Less electricity needs to be purchased from the grid
Cost savings
- Less gas/oil/electricity consumption for hot water production
- Better financial use of self-generated PV electricity
- Avoids low feed-in tariffs (~6–8 cents/kWh) by substituting more expensive energy (~30–40 cents/kWh)
Easy retrofitting
- Heating elements can be integrated relatively easily into existing domestic hot water tanks or buffer tanks
- Low installation effort compared to heat pumps or complex heating systems
Sustainability & independence
- Use clean solar power instead of fossil energy sources
- Increases independence from the energy market and rising prices
Low-maintenance & durable
- Heating elements are robust, low-maintenance components with a long service life
- No moving parts like a heat pump → less wear and tear.
Advice on heating a buffer tank or domestic hot water tank with PV surplus
We’ll be happy to advise you on using a heating element and the options available. Please write to us or give us a call: +49 8726 910037.
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