Solar calculator
Solar financing and energy benefit.
Compare financing cost, system value, electricity savings or feed-in revenue, and running costs.
Compare with an ETF
Invests the cost difference between the solar system and full grid purchases after each annual ETF return.
Development over time
Solar system, financing, and own outlay
Outstanding debtAnnual energy benefitAnnual interest costSystem valueCost with solar incl. systemElectricity cost without solar
The comparison uses grid purchases, self-consumption, feed-in revenue, financing payments, grants, and running costs. The ETF starts with the equity tied up in the system; each year the cost difference versus buying all electricity is invested or withdrawn after the ETF return.
Good questions before signing
Are there account, valuation, broker, or document fees?
What happens with early repayment or refinancing?
Which costs can be passed on to tenants?
Can special repayments reduce interest without fees?