Calculate Solar Panels
Calculate how many solar panels you need, the expected yield, annual savings, and payback period. Free online solar panel calculator.
Calculate Solar Panels
With this solar panel calculator, you can easily calculate how many solar panels you need to offset your annual electricity consumption. You will also get immediate insight into the expected energy yield, annual savings on your energy bill, and the estimated payback period of the installation.
How does the calculation work?
The calculator uses your annual electricity consumption, the capacity of the solar panels, and the current electricity price to estimate the yield. Based on this, it calculates how many solar panels are needed to generate a comparable amount of electricity.
Which factors influence the yield?
The actual yield of solar panels depends on several factors:
- Roof orientation
- Tilt angle of the panels
- Shade from trees or buildings
- Type of solar panels
- Weather conditions
- Quality of the inverter
The result of this tool is therefore an indication. The actual yield may be higher or lower depending on the situation.
What is the payback period of solar panels?
The payback period indicates how many years are needed to recover the investment through savings on the energy bill. In many cases, the payback period ranges between 5 and 10 years, depending on installation costs, energy prices, and the yield of the solar panels.
Frequently Asked Questions
How many solar panels does an average household need?
An average Dutch household with an electricity consumption of about 3,500 kWh per year typically needs between 8 and 12 solar panels, depending on the capacity per panel.
How much electricity does a solar panel produce?
A modern 450 Wp solar panel produces on average about 350 to 425 kWh per year in the Netherlands.
How much roof space do I need?
Most solar panels take up about 2 square meters per panel. The required space depends on the number of panels needed.
Are solar panels still profitable?
Despite changes in regulations and feed-in tariffs, solar panels can still be an attractive investment as they help you use self-generated electricity directly and reduce energy costs.