Energy & Home
Home Energy & Renovation Calculator
Plan energy savings, investment, payback and long-term economics for a renovation measure.
Current energy baseline
Plan energy savings, investment, payback and long-term economics for a renovation measure.
Additional assumptions
Result
Modelled payback
No payback within the analysis period
No payback within the analysis period
Energy overview
Measure A
Economic overview
Measure A
Cash-flow milestones
| Year | Measure A |
|---|---|
| 1 | -17,136.00 € |
| 5 | -13,680.00 € |
| 10 | -9,360.00 € |
| 15 | -5,040.00 € |
| 20 | -720.00 € |
What if
| Assumption | Year-1 net saving | Modelled payback | Modelled net result | Modelled ROI | |
|---|---|---|---|---|---|
| Baseline | 0.16 €/kWh | 864.00 € | No payback within the analysis period | -720.00 € | -4.0 % |
| Scenario A | 0.12 €/kWh | 648.00 € | No payback within the analysis period | -5,040.00 € | -28.0 % |
| Scenario B | 0.22 €/kWh | 1,188.00 € | 15.2 years | 5,760.00 € | 32.0 % |
Model assumptions and limits
This is a deterministic planning model based on your assumptions. Actual results can differ because of weather, occupant behaviour, building condition, workmanship, system performance, maintenance, energy-price development, rebound effects, financing, taxes and grant rules. It does not replace energy, construction, tax or investment advice.
The measure reduces modelled energy consumption by 5,400.00 kWh in year 1.
Under the entered assumptions, this equals a year-1 net saving of 864.00 €.
No modelled payback occurs within the selected analysis period.
An energy-price change changes the economic value of the saved energy.
For measures that change the energy carrier, this simplified consumption-reduction method is only partly suitable.
Frequently asked questions
What does energy saving mean?
It is your expected percentage reduction from current annual energy consumption.
Does the calculator check grant rules?
No. An entered grant is included economically only; eligibility and rules are not checked.
Is the model suitable for changing energy carrier?
Only partly. A change such as gas to a heat pump often requires different consumption and price assumptions than this simple percentage model.