“On time, quality work, clean up is great, good people and fair prices.”
Rita Demeuse • November 2025 • Google Review

York County, Maine
Licensed, insured electrical work for South Berwick homes and businesses, with the owner on every job.
South Berwick grew up where the Great Works River meets the Salmon Falls River, and its village still shows the mill town it was: historic houses around Central Square, Berwick Academy, and newer neighborhoods spreading out along Route 236 and the back roads. Goodnow Electric, licensed as a Maine master electrician, is based in Westbrook. This page covers what shapes electrical work in South Berwick, from the age of its houses and its heating fuels to storms, gas service and who handles electrical permits.
Roughly 7,700 people live in South Berwick’s 3,200 or so housing units, per the Census Bureau’s five-year estimates for 2020 to 2024. Construction peaked late here: the two decades from 1980 through 1999 produced about 38 percent of today’s homes, and the median house dates from 1982. The old core remains large, with some 22 percent of homes older than 1940, whereas the 1960s and 1970s contributed only about 11 percent. Single-family detached houses are about 77 percent of the stock, duplexes up to fourplexes another 11 percent or so, and mobile homes under 1 percent, with owners in about 78 percent. So the wiring ranges from original circuits in nineteenth-century village houses to 1980s and 1990s homes now due for panel and service updates.
Fuel oil is the main heat in about 60 percent of South Berwick’s occupied homes, with propane at about 20 percent. Utility gas reaches close to 7 percent, higher than in Kittery, Eliot, York or Berwick, because South Berwick is one of the Maine towns on Unitil’s natural gas list. Wood heats about 5 percent and electricity about 4 percent. That low electric share means most South Berwick panels have never carried a heating load, which is exactly what changes when a house moves from oil to heat pumps. An electric car can join that load at off-peak hours, and Efficiency Maine’s $400 charger incentive is built around exactly that.
Electricity in South Berwick comes from Central Maine Power, the state utility commission’s map confirms. On the tree-lined back roads, limbs across the wires cause many of the outages. Maine’s worst weather-related blackout, the windstorm of October 2017, cut more than 400,000 accounts statewide and kept some off for over a week, and after the storms of January 9 to 13, 2024 York County was named in a federal disaster declaration. The Salmon Falls River also carries a small hydroelectric dam beside the New Hampshire Route 4 bridge. For homes outside the village, a well pump, sump pump or heating system without power is the problem a generator addresses.
South Berwick was set off from Berwick on February 12, 1814, and its roots reach back to a 1634 sawmill and the Great Works mill that gave the river its name. From 1831 until 1893 a cotton mill owned by the Portsmouth Manufacturing Company operated at Quampheagan Falls; its Greek Revival counting house now holds the Old Berwick Historical Society Museum. The village center became a National Register historic district in 2010. Historic New England owns the Sarah Orne Jewett House, built in 1774 overlooking Central Square, and the Hamilton House of about 1785, while Berwick Academy dates to 1791.
Building, plumbing and subsurface wastewater permits go through South Berwick’s Code Enforcement Office, whose officer doubles as the town’s building and licensed plumbing inspector. The town spells out electrical work plainly: no permit or inspection for a single-family residence, but a State Electrical Office permit for multi-unit dwellings and commercial jobs. At the state level, installations started from July 1, 2026 onward follow the 2026 National Electrical Code, the edition the Electricians’ Examining Board adopted. Projects near the rivers should check the town’s Shoreland Zoning Map, and land use rules are in the town code.
Commercial, solar, smart home and new construction work are covered on our full list of electrical services.
Close to South Berwick, we also work in Berwick, Eliot, North Berwick, York, Kittery, and Sanford. Every town we serve is listed on our service area page.
Homeowners here often read why LED lighting upgrades pay back fastest, electrical planning for a new home in Southern Maine, and whole-house vs. portable generators for Maine homes.
More resources: answers to common electrical questions, our generator sizing guide, and electrical tips and guides for Maine homeowners.
“On time, quality work, clean up is great, good people and fair prices.”
Rita Demeuse • November 2025 • Google Review
Tell us what you need done and where; a licensed electrician will reply with a written quote.