
Generator installation
Keep your lights, heat and fridge running when the power goes out. Martinez Electric LLC installs standby and portable-ready generators, including transfer switches. We’re based in Derry, NH and take jobs in New Hampshire, Massachusetts and Maine.
Standby or portable-ready
Both keep the circuits that matter powered in an outage. The difference is how the generator gets there.
- Standby generatorsInstalled for good outside, on a pad, and wired in so they’re ready when the power goes out.
- Portable-readyThe wiring and transfer switch so a portable generator can power the house safely, without extension cords through a window.
- Transfer switchesThey keep generator power separate from the utility lines, which is what makes running a generator safe for you and for line workers.
Once it’s in
We also service standby generators, so yours is ready for the next outage: see generator maintenance.

Questions about generators
Do you install transfer switches?
Yes. Transfer switches are part of our generator installations, for standby and portable-ready setups.
Can you set my house up for a portable generator?
Yes. We do portable-ready installations, so a portable generator can power your circuits safely through a transfer switch.
How do I get a quote for a generator?
Call (603) 275-7868, email Martinezelectric45@gmail.com, or send the quote request form.
Other services
All services on one page- Electrical repairsFlickering lights, dead outlets and breakers that keep tripping.
- Panel & service upgradesMore power for older homes, without overloading the system.
- EV charger installationLevel 2 home chargers for every major brand.
- RemodelsWiring for kitchens, baths and basements.
- Additions & new constructionNew rooms, garages and in-law suites.
- Commercial & industrialOffices, retail spaces, warehouses and industrial facilities.
Call or email
Derry, New Hampshire
Serving New Hampshire, Massachusetts and Maine
| Mon–Fri | 7am–5pm |
|---|---|
| Saturday | 8am–3pm |
| Sunday | Closed |



