Energy data,
ready to model.
Curated datasets of costs, capacity factors, demand and more. Cleaned and processed, ready to visualise online or drop into your energy system models.
Data
Bayesian EnergyFreeHistorical Solar Capacity FactorsHourly solar PV capacity factors derived from ECMWF ERA5 reanalysis: global, 1940 to present, at hourly resolution, refreshed every three months.- Bayesian EnergyFreeHistorical Wind Capacity FactorsHourly onshore and offshore wind capacity factors derived from ECMWF ERA5 reanalysis: global, 1940 to present, at hourly resolution, refreshed every three months.
- Utility PVLand-Based WindOffshore WindBattery (4Hr)
NLRFreeAnnual Technology Baseline 2024Current and projected cost and performance data for US electricity generation and storage technologies to 2050, from NREL's Annual Technology Baseline. 
IEAFreeWorld Energy Outlook 2025Global energy supply, electricity generation, installed capacity, demand and emissions trajectories to 2050 across IEA scenarios, from the WEO 2025 Free Dataset.- Solar PVOnshore windBattery storageElectrolysis
PyPSAFreeEuropean Cost CatalogueTechno-economic cost and performance assumptions for energy system technologies in Europe, 2020 to 2050, from PyPSA's technology-data.
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Frequently asked questions
Two kinds of sources. Some datasets are produced by Bayesian Energy, such as our historical solar and wind capacity factors derived from ERA5 reanalysis. Others are trusted third-party datasets we curate and surface as published, such as the IEA World Energy Outlook and the NREL Annual Technology Baseline. Every dataset page credits its original source.