Savings calculator
What does that mean for you?
Four inputs are enough for a first estimate. You'll see immediately what COR.set saves compared to your current heating — in euros and in CO₂. For context: per kilowatt hour, heating oil currently costs roughly double the price of pellets, natural gas in existing contracts up to twice as much (prices as of July 2026).
Villa, large property or high heat demand? Then you need several COR.gen units.
To the large-property calculatorYour home
All values are pre-set with typical assumptions — simply adjust them.
How do you heat today?
Your current heating cost (optional)
Know your real figures? Then we use those instead of the model — much more precise.
Building standard
Rooftop photovoltaics
Existing PV counts in both cases (it doesn't change the comparison). Planned PV is the extra benefit with COR.
Your total energy rate (price per kWh) incl. grid & levies. If provided, we calculate the savings with your real electricity price instead of the wholesale market price.
Your current electricity use (optional)
Household electricity per year, excluding EV charging and heating electricity (heat pump). If you know it, we calculate with it instead of the estimate.
System
COR.boost (supplementary heat for peaks)
COR.boost is in final product tuning — the values shown are indicative.
Your result
Simulation running…