Bywatts — the US energy database.
Geolocated records covering solar companies, installers, power plants, substations, transmission lines, and data centers — explored on one interactive map.
What's in the database
Browse the database
By state
View all states →By category
- Charging Infrastructure
- Commissioning & Testing Firms
- Controls, Software & Smart Grid
- DC Microgrids
- Decommissioning & Recycling
- Design & Engineering
- Distributors & Suppliers
- EPC Firms (Engineering, Procurement, Construction)
- Energy Consultants
- Energy Storage System Providers
- Finance & Legal Services
- Generation Systems
- Installers & Field Services
- Manufacturers
- Microgrid Developers
- Operations & Maintenance
- System Integrators
- Training & Certification Providers
About & methodology
Bywatts aggregates US energy-infrastructure data — power plants, substations, transmission lines and data centers — alongside a directory of solar companies and installers. Records are geolocated and regularly refreshed from public sources (HIFLD, EIA, PeeringDB) and curated industry data.
Frequently asked questions
What is Bywatts?
Bywatts is a database and interactive map of US solar companies, installers, and energy infrastructure — power plants, substations, transmission lines, and data centers.
Where does the data come from?
Public sources (HIFLD, EIA, PeeringDB) for infrastructure, plus a curated directory of solar companies and installers. Each record is geolocated and regularly refreshed.
How many solar companies are listed?
Over 14,000 solar companies and 8,000 installers across the United States, alongside ~7,000 power plants and tens of thousands of grid assets.
Is Bywatts free to use?
Yes — the map and directory are free to browse.