Bywatts

129,174 records · six datasets · one map

The US solar company & installer directory.

Solar companies, installers, power plants, substations, transmission lines, and data centers - indexed, geolocated, and explored on one interactive map.

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On the board

Live counts from the database
SOLAR-CO Solar companiesManufacturers, EPCs, distributors and service providers. 14,217 INSTALL Solar installersField-service installers across all 50 states. 8,155 PLANTS Power plantsGenerating facilities by fuel and capacity. 6,958 SUBSTN SubstationsGrid substations by voltage class. 47,358 TRANSMSN Transmission linesHigh-voltage transmission corridors. 52,241 DATACTR Data centersFacilities and their power demand. 245

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Every record, on one map.

Layer power plants over transmission corridors, filter substations by voltage class, scrub the fleet build-out from 1900 to today.

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FEOC compliance calculator

Check FEOC material-assistance and domestic-content eligibility and price the incentive stack.

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For solar companies: claim your listing

Most companies and installers are already in the Bywatts database. Sign in with your work email to claim your listing and keep its description, phone number, and website current.

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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. Records are geolocated where coordinates are available and updated periodically.

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.

How do I list my solar company or installer business?

Most companies and installers are already in the database. Sign in at /dashboard with your work email to claim and manage your listing.