Skip to content

Companies Installers Power plants Substations Data centers Categories States

Guides Calculator Sign in Open the map

esc

↑↓ navigate ↵ open esc close

Home
Substations
California
NUMMI

NUMMI

Operating

100-229 kV substation in California

Voltage class: 100-229 kV
Max voltage: 115 kV
Coordinates: 37.4937, -121.9394

See it on the map

Nearby

NORWELD NOVATO NOVATO JUNCTION NTCQ NUEVO NUTGLADE O'BANION O'NEIL OAK OAK PARK

Directories

Solar companies
Installers
Power plants
Substations
Data centers
Categories

Tools

Interactive map
FEOC calculator
Pricing
Get quotes

Resources

Guides
All states
Claim your listing
Sitemap
Methodology
Support

Legal

Privacy Policy
Cookie Policy
Terms of Service
Accessibility

Bywatts - a database of US energy infrastructure. 610,000+ records overall, 129,000+ of them geolocated across solar companies, installers, power plants, substations, transmission lines, and data centers. Data aggregated from HIFLD, EIA, PeeringDB, and curated industry sources, updated periodically. Set in Space Grotesk, IBM Plex Sans, and IBM Plex Mono. © 2026 Bywatts.

No trackers. No analytics. No ads.