61/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.7★ from 83 Google reviews, listed on Google as “Electrician”.
- 4.7★ from 83 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 5 Commerce Dr #5, Shelton, CT 06484
Best Electricians in Derby, CT (2026)
398 electricians ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Derby: Mister Sparky®, CR Score 61/100; 4.7★ from 83 Google reviews; open 24/7.
- 3
Best for emergencies (open 24/7): Lagasse Electric LLC, posts 24/7 hours; ranked #3 of 398.
- 44
Most-reviewed: Astacio Heating, Cooling, Plumbing & Electrical, 1,998 Google reviews at 4.8★, the most of 398 ranked; ranked #44.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
398 Derby electricians are ranked here by CR Score, from ten published factors. 81 are open 24/7, 193 open Saturdays and 113 open Sundays, based on posted hours. The median Google rating is 5.0★ across 398 rated businesses.
Top 10 electricians in Derby at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Mister Sparky® | 61 | 4.7★ (83) | Shelton, 4 mi away | 24/7 | Overall |
| 2 | Professional Electrical Services, LLC | 61 | 4.9★ (351) | Orange, 4 mi away | Sat · Evenings | — |
| 3 | Lagasse Electric LLC | 60 | 5.0★ (53) | Milford, 8 mi away | 24/7 | Emergencies |
| 4 | The Generator Guys, LLC | 60 | 4.9★ (95) | Southbury, 11 mi away | 24/7 | — |
| 5 | Macos Electric LLC | 60 | 4.9★ (35) | Shelton, 5 mi away | 24/7 | — |
| 6 | QC Electric | 60 | 5.0★ (261) | Wallingford Center, 21 mi away | 24/7 | — |
| 7 | PowerPlus Electric & Communications LLC | 60 | 4.9★ (128) | West Haven, 8 mi away | Sat · Sun · Evenings | — |
| 8 | Pagliaro's PowerSource | 60 | 5.0★ (18) | Shelton, 2 mi away | 24/7 | — |
| 9 | POWERHOUSE ELECTRIC CT | 60 | 5.0★ (237) | Darien, 21 mi away | 24/7 | — |
| 10 | LCD PLASMA INSTALLATION | 60 | 5.0★ (326) | Waterbury, 17 mi away | Sat · Sun | — |
The 398 best electricians in Derby, ranked
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in Orange, 4 mi away
61/100CR ScoreRanked #2 because of its Google rating and trade focus: 4.9★ from 351 Google reviews, listed on Google as “Electrician”.
- 4.9★ from 351 Google reviews
- Hours
- Mon–Sat 8 AM–8 PM · Sun closed
- Address
- 821 Racebrook Rd, Orange, CT 06477
Based in Milford, 8 mi away
60/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 53 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 53 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 959 New Haven Ave, Milford, CT 06460
Based in Southbury, 11 mi away
60/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 95 Google reviews, listed on Google as “Electrician”.
- 4.9★ from 95 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 522 N Georges Hill Rd, Southbury, CT 06488
Based in Shelton, 5 mi away
60/100CR ScoreRanked #5 because of its Google rating and trade focus: 4.9★ from 35 Google reviews, listed on Google as “Electrical installation service”.
- 4.9★ from 35 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- CT-108, Shelton, CT 06484
#6 QC Electric
Based in Wallingford Center, 21 mi away
60/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 261 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 261 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in West Haven, 8 mi away
60/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 128 Google reviews, listed on Google as “Electrical installation service”.
- 4.9★ from 128 Google reviews
- Hours
- Mon–Sun 7 AM–11 PM
- Address
- 57 Linden St, West Haven, CT 06516
Based in Shelton, 2 mi away
60/100CR ScoreRanked #8 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 18 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 177 Coram Rd, Shelton, CT 06484
Based in Darien, 21 mi away
60/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 237 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 237 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Waterbury, 17 mi away
60/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 326 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 326 Google reviews
- Hours
- Mon–Sat 8 AM–6 PM · Sun 1 PM–6 PM
- Address
- 290 Macauley Ave, Waterbury, CT 06705
Based in Stratford, 7 mi away
60/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 34 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 34 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 175 Cannon Dr, Stratford, CT 06614
Based in Prospect, 14 mi away
60/100CR ScoreRanked #12 because of its Google rating and review volume: 5.0★ from 619 Google reviews.
- 5.0★ from 619 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 123 Union City Rd, Prospect, CT 06712
Based in Ansonia, 4 mi away
59/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 40 Google reviews
- Hours
- Mon–Sat 7 AM–5 PM · Sun 7 AM–12 PM
Based in Ansonia, 21 mi away
59/100CR ScoreRanked #14 because of its Google rating and trade focus: 4.9★ from 207 Google reviews, listed on Google as “Electrician”.
- 4.9★ from 207 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Bethel, 18 mi away
59/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 512 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 512 Google reviews
- Hours
- Mon–Fri 6 AM–9 PM · Sat 6 AM–1 PM · Sun closed
- Address
- 30 Sandy Ln, Brookfield, CT 06804
Based in Stratford, 6 mi away
59/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 325 Google reviews, listed on Google as “Electrician”.
- 4.9★ from 325 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat–Sun closed
- Address
- 175 Peters Ln, Stratford, CT 06614
Based in New Canaan, 24 mi away
59/100CR ScoreRanked #17 because of its Google rating and trade focus: 4.9★ from 247 Google reviews, listed on Google as “Electrician”.
- 4.9★ from 247 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 4 Cross St, New Canaan, CT 06840
Based in Bristol, 21 mi away
58/100CR ScoreRanked #18 because of its Google rating and trade focus: 5.0★ from 99 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 99 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Milford, 7 mi away
58/100CR ScoreRanked #19 because of its Google rating and review volume: 4.7★ from 1,151 Google reviews.
- 4.7★ from 1,151 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 922 Bridgeport Ave, Milford, CT 06460
Based in Hebron, 21 mi away
58/100CR ScoreRanked #20 because of its Google rating and trade focus: 4.9★ from 108 Google reviews, listed on Google as “Electrician”.
- 4.9★ from 108 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Bristol, 11 mi away
58/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 20 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Ansonia, 4 mi away
58/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 18 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Danbury, 20 mi away
58/100CR ScoreRanked #23 because of its Google rating and trade focus: 5.0★ from 156 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 156 Google reviews
- Hours
- Mon–Sun 7 AM–10 PM
- Address
- 15 Library Pl, Danbury, CT 06810
Based in Derby
58/100CR ScoreRanked #24 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 27 Google reviews
- Hours
- Mon–Fri 7 AM–4 PM · Sat 7:30 AM–4 PM · Sun closed
- Address
- 145 Park Ave, Derby, CT 06418
Based in Danbury, 20 mi away
58/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 61 Google reviews, listed on Google as “Electrician”.
- 5.0★ from 61 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 11 Lily Dr, Danbury, CT 06811
Electricians ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 398 ranked electricians here; the rest are on their profiles.
Also serving Derby
20 more electricians within 25 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Advantage Electrical LLC | 4.5★ (2) | 3 mi |
| AJ Peck Electric LLC | 5.0★ (2) | 7 mi |
| Arrow Electrical Construction LLC | 3.0★ (2) | In Derby |
| CD Electric | In Derby | |
| Criscione Electrical Services LLC | 3.0★ (2) | 6 mi |
| CT Home Generator Systems | 4.6★ (32) | 21 mi |
| Edison Electric | 4.3★ (6) | 13 mi |
| Ehrhard Electric | 4.4★ (7) | 14 mi |
| First Choice Plumbing | 5.0★ (1) | In Derby |
| Ideal Electric LTD | 5.0★ (2) | 6 mi |
| Jamm Electrical Service | 5.0★ (8) | 11 mi |
| Jt Electric | 4.0★ (1) | In Derby |
| Kings electrical contracting | 5.0★ (4) | 8 mi |
| L&M Electric, LLC | 4.2★ (21) | 16 mi |
| Landmark Electric | 5.0★ (2) | 7 mi |
| O'Connell's Electrical Contractors | 5.0★ (28) | 21 mi |
| PURE ENERGY LLC | 4.8★ (23) | 21 mi |
| Rob's Electric LLC | 5.0★ (21) | 20 mi |
| Roberto Electric Co | 5.0★ (2) | 5 mi |
| Stevenson Electrical Contractor | 4.7★ (17) | 19 mi |
How much do electricians cost in Derby?
National price ranges in USD, not adjusted for Derby. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Electrical panel upgrade | $518 | $1,347 | $2,193 | Per panel, installed; typical range of customer-reported jobs. US national range | October 2026 |
How to check an electrician's license in Connecticut
In Connecticut, Connecticut Department of Consumer Protection licenses Electrical wiring and equipment work.
- Search the business name or license number on the Connecticut Department of Consumer Protection license lookup.
- Check that the status is active and the name matches the contract or truck.
- Ask for proof of insurance before work starts.
No chip usually means we have not matched a state record yet. Check the lookup yourself before you hire.
Guide checked October 2026. How we verify licenses
How we ranked Derby electricians
We scored 398 Derby electricians on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 22, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Derby data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |
Electricians in Derby: frequently asked questions
Who is the best electrician in Derby?
By CR Score, the highest-ranked electrician in Derby, CT is Mister Sparky® with a CR Score of 61/100. It has 4.7★ from 83 Google reviews. It is open 24/7. Professional Electrical Services, LLC (#2) and Lagasse Electric LLC (#3) follow. We ranked 398 electricians on ten factors, last updated October 22, 2026.
How many electricians are there in Derby?
ContractorsRanked ranks 398 electricians serving Derby, CT. 2 of them are based in Derby; the rest serve it from nearby towns. Another 20 within 25 mi are listed but not ranked yet. Counts are as of October 2026.
Which electricians in Derby are open 24/7?
81 ranked electricians in Derby post 24/7 hours. The highest-ranked are Mister Sparky® (#1), Lagasse Electric LLC (#3) and The Generator Guys, LLC (#4). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which electricians in Derby work on weekends?
193 of 398 ranked electricians post Saturday hours and 113 post Sunday hours. The highest-ranked open Saturdays are Mister Sparky® (#1), Professional Electrical Services, LLC (#2) and Lagasse Electric LLC (#3). Posted hours are office hours; crews may book weekend jobs separately.
How do I check an electrician's license in Connecticut?
In Connecticut, Connecticut Department of Consumer Protection handles licensing and covers Electrical wiring and equipment work. Search the business or license number at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx.
How much does electrical panel upgrade cost in Derby?
Electrical panel upgrade typically costs $518 to $2,193, with $1,347 typical (Per panel, installed; typical range of customer-reported jobs. US national range). This is a national range, not adjusted for Derby. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Derby electricians have?
The median Google rating among 398 rated electricians in Derby is 5.0★, with a median of 9 reviews. Astacio Heating, Cooling, Plumbing & Electrical has the most, 1,998 reviews, and ranks #44. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank electricians?
Each electrician gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Update log for Derby
- October 2026: CR Scores recalculated for 398 electricians serving Derby.
- October 2026: 6 duplicate listings merged.
More electricians and Derby pages
Electricians near Derby
- Electricians in Shelton, CT397 ranked
- Electricians in Ansonia, CT415 ranked
- Electricians in Orange, CT378 ranked
- Electricians in Woodbridge, CT400 ranked
- Electricians in Seymour, CT424 ranked
- Electricians in City of Milford (balance), CT381 ranked
- Electricians in Milford, CT383 ranked
- Electricians in Trumbull, CT331 ranked
- Electricians in Oxford, CT427 ranked
- Electricians in West Haven, CT335 ranked
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- All contractors in Derby