Approved
Cornerstone Power LLC
Electrical for Home Addition or Remodel Installation, Electrical Wiring or Panel Upgrade, Lightning Protection Install or Repair,
About us
Locally owned and operated in Maine, fully licensed and insured, CORNERSTONE POWER, is going to work hard to make sure YOUR happy with the work your paying for!
Business highlights
Emergency services offered
26 years of experience
Services we offer
Electrical
Amenities
Emergency Services
Yes
Free Estimates
Yes
Warranties
Yes
Reviews
5.04 Reviews
| Number of Stars | Image of Distribution | Number of Ratings |
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| 100% | ||
| 0% | ||
| 0% | ||
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Filter reviews by service
Showing 1-4 of 4 reviews
Michael P.
Jan 2026
Electrical Switches, Outlets & Fixtures Install or Repair
Got some outlets and a light fixed in our spare bedroom. Guys were super nice and they did quality work!
Luke B.
Jan 2026
Electrical Wiring or Panel Upgrade
David did fantastic work. My well pump kept shutting off and I had to reset my breaker every time. After the last time that I had to go to my basement covered in soap and a towel I gave him a call. He identified the load issue and isolated the breaker. No more soapy basement trips.
Chris N.
Jan 2026
Electrical Wiring or Panel Upgrade
Great job, Great people! Excellent and clean wiring. I will be recommending them to my friends. David was really nice and professional.
Ryan K.
Jan 2026
Electrical Wiring or Panel Upgrade
David has done numerous electrical projects for me over the years.
He installed the underground service and all the wiring in my 30x40 garage.
As well as installing cameras and wiring new bedrooms in my basement .
All of his work is clean professional and functional.
Licensing
Licensed*
Trade License Number
LM50018121
Trade License Locale
ME
Trade License Expiration
10/31/2027
State Contractor License Requirements
All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.
*Contact business to see additional licenses.
FAQ
Cornerstone Power LLC is currently rated 5.0 overall out of 5.
Yes, Cornerstone Power LLC offers free project estimates.
No, Cornerstone Power LLC does not offer eco-friendly accreditations.
Yes, Cornerstone Power LLC offers emergency services.
Yes, Cornerstone Power LLC offers warranties.