Country and world energy data
Country, continent and world statistics (electricity generation and mix, primary energy, carbon intensity, per-capita values, 1965–2025) come from the Our World in Data energy dataset (CC BY 4.0), which compiles Ember (electricity), the Energy Institute Statistical Review of World Energy (primary energy) and the U.S. EIA. The latest year shown is the latest available per indicator and country; values for the most recent year may be preliminary.
Shares of electricity refer to generation. "Renewables" means hydro, wind, solar, bioenergy, geothermal, wave and tidal. "Low-carbon" means renewables plus nuclear. Carbon intensity is lifecycle grams of CO₂-equivalent per kWh generated (Ember methodology).
Power plants
The WRI Global Power Plant Database v1.3 (CC BY 4.0) lists 34,936 plants in 167 countries with capacity, fuel, location and reported or estimated generation. It was last updated in 2021, so recent solar and wind farms may be missing. Country totals elsewhere on the site use the newer Ember data.
Solar and wind farms
The solar and wind farm atlas uses the Global Energy Monitor Global Solar Power Tracker and Global Wind Power Tracker (February 2026 release, CC BY 4.0): 122,938 utility-scale facilities in all development stages. Some locations are approximate.
Weather and resource data
Location-based calculators query NASA POWER (public domain) directly from your browser: hourly global, direct and diffuse irradiance, temperature and wind speed (MERRA-2 and CERES-based, roughly 0.5° grid), or long-term monthly climatology. Resource maps use the Global Solar Atlas and Global Wind Atlas (World Bank / ESMAP, Solargis, DTU; CC BY 4.0). Place search uses the Open-Meteo geocoding API; base maps © OpenStreetMap contributors via OpenFreeMap.
Models
- Solar PV: NOAA solar position, Hay–Davies transposition, ASHRAE incidence-angle modifier, Faiman-type cell temperature, PVWatts-style DC/AC conversion with inverter clipping.
- Wind: power-law or log-law shear to hub height, air density from elevation and temperature, generic Betz-limited power curves scaled by rotor size and rating, hourly series or Weibull integration.
- Finance: yearly cash flows with degradation, price escalation, O&M growth and replacements; payback from cumulative cash flow; NPV, IRR and LCOE with your discount rate.
Each calculator page documents its specific formulas and assumptions under Method & assumptions.
Limitations
All results are estimates for orientation and pre-feasibility. They are not a substitute for a site survey, a professional design, or financial advice.
Translations
The site is published in English, Spanish, French, German, Romanian, Hindi and Simplified Chinese. If a translation is unclear, the English version is the reference.
Update schedule
Country datasets are refreshed when Our World in Data publishes new releases (several times a year). Weather is fetched live at calculation time.