Generator & Backup Power in San Jose, CA
Generac standby generators and battery backup, installed by a licensed team — automatic power when the grid drops, sized for your home and permitted to code.
- Generac automatic standby generators
- Automatic transfer switch
- Whole-home or essential-circuit backup
- Permitted, inspected, gas & electrical coordinated
- Battery backup option (no fuel, no noise)
Licensed C-10 · CSLB #1114918 · Permitted & inspected
Certified installer & trusted partners
Generator & Backup Power in San Jose, done right
Every job in San Jose starts with a free assessment and your home's Electrical Score, is sized by a real NEC load calculation, and is permitted and inspected in Santa Clara County. No guesswork, no cutting corners.
Generac automatic standby generators
Automatic transfer switch
Whole-home or essential-circuit backup
Permitted, inspected, gas & electrical coordinated
Battery backup option (no fuel, no noise)
What does generator installation cost in San Jose?
Full cost guide →Most whole-home Generac standby installs in our area land around $14,000–$20,000, permitted, with the automatic transfer switch.
Typical range for the Santa Clara County area, not a quote. Your exact price comes from a free assessment.
Permits & your utility in San Jose
In San Jose, electric service is Pacific Gas & Electric (PG&E), and building permits are issued by City of San Jose. We pull the permit on every generator installation, coordinate the service and meter to PG&E's Electric & Gas Service Requirements (Greenbook, TD-7001M), and pass inspection, so it's safe, legal, and protects your home's value.
San Jose note: San Jose Clean Energy is CCA (generation only) — the wires/meter/Greenbook are still PG&E.
Your local generator installation team in Santa Clara County
Astral is a licensed C-10 electrical contractor. We know the local building departments and utilities, pull every permit, and stand behind the work. San Jose homeowners get the same licensed, warrantied generator installation we'd put in our own home.
Generator & Backup Power nearby
Other electrical services in San Jose
Not sure what your San Jose home needs?
Start with your home's Electrical Score: a licensed C-10 electrician grades your panel, service and wiring 0 to 100 for safety and capacity. Know before you buy an EV, add solar, or sell.
generator installation in San Jose: FAQ
What size generator do I need in San Jose?+
It depends on the circuits you want to keep running. We size the generator (or battery) to your home's real load and your priorities — whole-home or just the essentials.
Do you handle the permit and transfer switch?+
Yes — we install the automatic transfer switch, coordinate gas and electrical, and permit and inspect the whole job in Santa Clara County.
Generator & Backup Power in San Jose?
Book your free assessment with a licensed C-10 electrician today.