GreenEnergy.net is a free, independent reference for anyone who wants to understand energy with real numbers: homeowners pricing solar panels, students writing a thesis, journalists checking a claim, installers walking a client through a quote.
What we build
- 60 calculators built on proper physical models: hour-by-hour solar simulation from NASA satellite weather, turbine power curves, heat-pump performance against outdoor temperature, discounted cash-flow finance.
- Profiles of 214 countries and every continent, generated from the most complete open energy datasets available.
- Interactive maps of renewable shares over time, 35,000 power plants, 122,938 solar and wind farms and the solar and wind resource of the whole planet.
- Guides and a glossary that explain what the numbers mean, without jargon or hype.
Principles
- Show the work. Every calculator documents its formulas and assumptions; every dataset is cited with its licence.
- No paywalls, no sign-up. Calculations run in your browser; we never see your inputs. The site is funded by advertising only.
- Shareable by design. Results live in the URL, so a link reproduces a calculation exactly, and the recipient can change any value.
- Technology-neutral. We present solar, wind, hydro, nuclear, gas and coal with the same data and the same scrutiny.
Data
See Methodology & data sources for the full list of datasets, licences and update schedule.
Contact
Found an error, or want a calculator we don't have? Get in touch.