
Panel upgrades
Older homes often weren’t built for today’s power needs. Martinez Electric LLC upgrades panels and electrical service so you can run more without overloading the system, and the work meets code. We’re based in Derry, NH and take jobs in New Hampshire, Massachusetts and Maine.
What we do
A panel upgrade replaces the breaker panel, where every circuit in the house starts. A service upgrade raises how much power the house can draw from the utility, which usually means new service equipment outside as well. Some homes need one, some need both.
- Panel upgradesA new breaker panel with room for the circuits you have and the ones you’re adding.
- Service upgradesMore capacity coming into the house, for bigger loads.
- Meter socketsThe outside equipment that goes with a service upgrade.
- Done to codePanel and service work that meets code.
- Surge protectionA whole-house surge protector can go in with the new panel.
When an upgrade is worth it
When you’re adding a big load such as an EV charger, a generator or a kitchen remodel; when breakers trip as soon as several things run at once; or when the panel has no room left for new circuits.

Questions about panel upgrades
Will a panel upgrade let me add an EV charger?
Often that’s the reason for the upgrade. When we install an EV charger, any panel work the charger needs is part of the job.
Does the work meet code?
Yes. Our panel and service upgrades are done to code.
Do you upgrade service for businesses?
Yes. Service upgrades are part of our commercial and industrial work for offices, retail spaces, warehouses and industrial facilities.
Other services
All services on one page- Electrical repairsFlickering lights, dead outlets and breakers that keep tripping.
- EV charger installationLevel 2 home chargers for every major brand.
- Generator installationLights, heat and fridge keep running in an outage.
- 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 |
