Plug-In Solar Savings Calculator
By Hannah Lindqvist · Last reviewed Estimate a realistic range for annual generation, electricity-bill savings and simple payback. Change the local electricity rate, sunlight, system size, orientation and self-consumption instead of relying on a universal promise. The result remains an estimate—not a production guarantee or an eligibility decision.
Estimate your savings
Country presets are editable starting assumptions, not live tariff quotes. The financial estimate does not determine whether a system or product is eligible.
Methodology and assumptions
Annual generation = system kW × peak-sun hours × 365 × orientation factor × 82% system efficiency. The displayed ±15% range reflects weather, shade, temperature and mounting uncertainty.
Savings count only self-consumed electricity at the entered retail rate; no export payment is assumed. Payback is system price divided by annual savings and excludes financing, maintenance, degradation and installation work.
CO₂ is an indicative operational estimate using broad grid factors by country. It is not a lifecycle assessment or a site-specific emissions claim.
The country defaults are editable planning assumptions. Replace them with your tariff, site estimate and exact configuration price before making a decision.
Key facts
- United States plus six European country presets
- 350 W to 1,200 W output scenarios
- ±15% output range for site and weather uncertainty
- Location results separate framework status from product evidence