Tool · Plug-in solar
Plug-in solar savings calculator
Estimate how much electricity a plug-in kit could make at your home, what that's worth on your bill, and how long it takes to pay for itself.
Works in any currency. Enter your rate and kit price in dollars, pounds or euros.
UK kits are capped at 800 W. US limits vary by state. Check the rules map.
Average full-sun hours where you live, across the whole year.
Use the unit rate on your bill.
The share you use as it's made. The rest flows back to the grid.
Include mounting and delivery.
Your estimate
159saved a year
Output993 kWha year
Payback3.8 yrsto cover the kit
10-year net988after the kit price
- System efficiency 85%
- Prices stay flat
- No panel ageing
An estimate, not a quote. Shade, panel angle and weather all change real output.
How this calculator works
- 1. Yearly output
- 2. Yearly savings
- 3. Payback
The 85% figure covers inverter losses, heat and dust.