Cornerstone Power LLC

Cornerstone Power LLC is a residential electrician whose website lists a service area that includes Bridgton, Brunswick, Cape Elizabeth, Falmouth, Freeport, Gorham and North Yarmouth. Its website names whole house rewiring, electrical panel upgrades, ceiling fan services, indoor and outdoor lighting, whole house surge protectors and Copalum aluminum wiring repair, and the company says it offers free estimates and 24/7 emergency service. A recent Google customer wrote that David Undlin found solutions to upgrade their 65-year-old house to be safe and meet their needs. A recent Google customer called them "Professional, efficient, on time!" A 2026 Google customer said David handled knob and tube removal in their nearly 100-year-old home without damaging the walls, at a price they called great. A 2026 Google customer said Cornerstone Power installed their new generator hookup, and that everything was labeled, tested and explained before David left. A 2026 Angi customer said their well pump kept shutting off and they had to reset the breaker every time; David identified the load issue and isolated the breaker. A 2026 Angi customer said David installed the underground service and all the wiring in their 30x40 garage, as well as cameras and wiring for new bedrooms in the basement. A 2026 Thumbtack customer said David was their electrician for a remodel, and that the inspector, after seeing the first room, did not look at the rest. A 2026 Thumbtack customer said they got there on time, finished on budget, and made the basement feel like a whole new space.