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Best Solar Installers in Leicester, MA (2026)

120 solar installers ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Leicester: Boundless, Inc., CR Score 62/100; 4.8★ from 464 Google reviews; open 7 days a week.

  2. 3

    Best for emergencies (open 24/7): Old Glory Solar, posts 24/7 hours; ranked #3 of 120.

  3. 10

    Most-reviewed: Summit Energy, 824 Google reviews at 4.7★, the most of 120 ranked; ranked #10.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

120 Leicester solar installers are ranked here by CR Score, from ten published factors. 9 are open 24/7, 65 open Saturdays and 27 open Sundays, based on posted hours. The median Google rating is 4.9★ across 120 rated businesses.

Most of this list also appears on the Solar installers in Worcester ranking. See Solar installers in Worcester

Top 10 solar installers in Leicester at a glance

Top 10 solar installers in Leicester at a glance
RankBusinessCR ScoreGoogle ratingBased inHoursBest for
1Boundless, Inc.624.8★ (464)Marlborough, 18 mi awaySat · SunOverall
2Sunrun Solar584.1★ (239)Shrewsbury, 11 mi awaySat · Sun—
3Old Glory Solar585.0★ (30)Athol, 23 mi away24/7Emergencies
4Mark The Solar Expert584.9★ (35)Grafton, 16 mi awaySat · Sun · Evenings—
5Lunex Power574.7★ (100)Worcester, 6 mi awayEvenings—
6Golden Group Roofing & Solar574.9★ (174)Grafton, 14 mi awaySat · Sun—
7Great Sky Solar575.0★ (468)Lexington, 39 mi away——
8Momentum Solar Massachusetts574.0★ (198)Marlborough, 17 mi awaySat · Sun · Evenings—
9On Call Electric565.0★ (164)Marlborough, 19 mi away24/7—
10Summit Energy564.7★ (824)Mansfield, 37 mi away—Most reviews

The 120 best solar installers in Leicester, 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.

  1. Ranked #1 in Leicester

    Based in Marlborough, 18 mi away

    62/100CR Score

    Ranked #1 because of its Google rating and trade focus: 4.8★ from 464 Google reviews, listed on Google as “Solar energy company”.

    • 4.8★ from 464 Google reviews
    Hours
    Mon–Sat 9 AM–6 PM · Sun 9 AM–5 PM
    Address
    11 Apex Dr #301b, Marlborough, MA 01752
  2. Based in Shrewsbury, 11 mi away

    58/100CR Score

    Ranked #2 because of its Google rating and trade focus: 4.1★ from 239 Google reviews, listed on Google as “Solar energy company”.

    • 4.1★ from 239 Google reviews
    Hours
    Mon–Sun 8 AM–5 PM
    Address
    240 A Cherry St, Shrewsbury, MA 01545
  3. Based in Athol, 23 mi away

    58/100CR Score

    Ranked #3 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Solar energy company”.

    • 5.0★ from 30 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    140 Patriots Rd, East Templeton, MA 01438
  4. Based in Worcester, 6 mi away

    57/100CR Score

    Ranked #5 because of its Google rating and trade focus: 4.7★ from 100 Google reviews, listed on Google as “Solar energy company”.

    • 4.7★ from 100 Google reviews
    Hours
    Mon–Fri 7 AM–7 PM · Sat–Sun closed
    Address
    95 Prescott St Suite 106, Worcester, MA 01605
  5. Based in Lexington, 39 mi away

    57/100CR Score

    Ranked #7 because of its Google rating and trade focus: 5.0★ from 468 Google reviews, listed on Google as “Solar energy company”.

    • 5.0★ from 468 Google reviews
    Hours
    Mon–Fri 8 AM–6 PM · Sat–Sun closed
    Address
    3 Bow St Suite 3, Lexington, MA 02420
  6. Based in Marlborough, 17 mi away

    57/100CR Score

    Ranked #8 because of its Google rating and trade focus: 4.0★ from 198 Google reviews, listed on Google as “Solar energy company”.

    • 4.0★ from 198 Google reviews
    Hours
    Mon–Fri 8 AM–9 PM · Sat–Sun 8 AM–7 PM
    Address
    50 D'Angelo Dr #3, Marlborough, MA 01752
  7. Based in Marlborough, 19 mi away

    56/100CR Score

    Ranked #9 because of its Google rating and review volume: 5.0★ from 164 Google reviews.

    • 5.0★ from 164 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    61 Emmett St, Marlborough, MA 01752
  8. Based in Mansfield, 37 mi away

    56/100CR Score

    Ranked #10 because of its Google rating and review volume: 4.7★ from 824 Google reviews, the most in Leicester.

    • 4.7★ from 824 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    15 Berkshire Rd, Mansfield, MA 02048
  9. Based in Billerica, 39 mi away

    56/100CR Score

    Ranked #11 because of its Google rating and trade focus: 4.4★ from 276 Google reviews, listed on Google as “Solar energy company”.

    • 4.4★ from 276 Google reviews
    Hours
    Mon–Sun 8 AM–5 PM
    Address
    16 Progress Rd B4, Billerica, MA 01821
  10. Based in Marlborough, 20 mi away

    56/100CR Score

    Ranked #12 because of its Google rating and trade focus: 4.9★ from 100 Google reviews, listed on Google as “Solar energy company”.

    • 4.9★ from 100 Google reviews
    Hours
    Mon–Fri 8:30 AM–5 PM · Sat–Sun closed
    Address
    257 Maple St #2, Marlborough, MA 01752
  11. Based in Clinton, 20 mi away

    55/100CR Score

    Ranked #16 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Solar energy company”.

    • 5.0★ from 27 Google reviews
    Hours
    Mon–Sat 8 AM–5 PM · Sun closed
  12. Based in Holyoke, 36 mi away

    55/100CR Score

    Ranked #17 because of its Google rating and trade focus: 4.4★ from 339 Google reviews, listed on Google as “Solar energy company”.

    • 4.4★ from 339 Google reviews
    Hours
    Mon–Fri 9 AM–8 PM · Sat 10 AM–4 PM · Sun closed
    Address
    4 Open Square Way #410, Holyoke, MA 01040
  13. Based in Sterling, 15 mi away

    55/100CR Score

    Ranked #18 because of its Google rating and trade focus: 4.6★ from 9 Google reviews, listed on Google as “Solar energy system service”.

    • 4.6★ from 9 Google reviews
    Hours
    Mon–Fri 8 AM–6 PM · Sat–Sun 9 AM–5 PM
    Address
    80 Wilder Rd, Sterling, MA 01564
  14. Based in Ashburnham, 26 mi away

    55/100CR Score

    Ranked #19 because of its Google rating and trade focus: 4.9★ from 18 Google reviews, listed on Google as “Solar energy company”.

    • 4.9★ from 18 Google reviews
    Hours
    Mon–Sun 10 AM–7 PM
    Address
    58 Holden Rd, Shirley, MA 01464
  15. Based in East Greenwich, 21 mi away

    55/100CR Score

    Ranked #20 because of its Google rating and trade focus: 5.0★ from 27 Google reviews, listed on Google as “Solar energy company”.

    • 5.0★ from 27 Google reviews
    Hours
    Mon–Fri 9 AM–6 PM · Sat 9 AM–2 PM · Sun closed
  16. Based in Pawtucket, 37 mi away

    55/100CR Score

    Ranked #21 because of its Google rating and trade focus: 4.8★ from 305 Google reviews, listed on Google as “Solar energy company”.

    • 4.8★ from 305 Google reviews
    Hours
    Mon–Fri 9 AM–6 PM · Sat–Sun closed
    Address
    163 Exchange St STE 201, Pawtucket, RI 02860
  17. Based in Johnston, 36 mi away

    54/100CR Score

    Ranked #22 because of its Google rating and trade focus: 4.9★ from 65 Google reviews, listed on Google as “Solar energy company”.

    • 4.9★ from 65 Google reviews
    Hours
    Mon–Sat 9 AM–9 PM · Sun closed
    Address
    1665 Hartford Ave Unit 20, Johnston, RI 02919
  18. Based in Easthampton, 39 mi away

    54/100CR Score

    Ranked #23 because of its Google rating and trade focus: 4.9★ from 201 Google reviews, listed on Google as “Solar energy system service”.

    • 4.9★ from 201 Google reviews
    Hours
    Mon–Fri 7:30 AM–5 PM · Sat–Sun closed
    Address
    116 Pleasant St Suite 321, Easthampton, MA 01027
  19. Based in Ludlow, 31 mi away

    54/100CR Score

    Ranked #25 because of its Google rating and trade focus: 4.5★ from 96 Google reviews, listed on Google as “Solar energy company”.

    • 4.5★ from 96 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat closed · Sun 8 AM–8 PM
    Address
    280 Moody St, Ludlow, MA 01056

How much do solar installers cost in Leicester?

Typical prices in USD, adjusted for Massachusetts with a published regional index. Each row names its basis and month.

How much do solar installers cost in Leicester?
JobLowTypicalHighBasisChecked
Solar panel installation$28,990$32,790$35,670Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 1.05 New England factor (2025 Cost vs. Value Report)October 2026

How we ranked Leicester solar installers

We scored 120 Leicester solar installers 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.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed fromIn Leicester data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Credentials15%Active state license, bond and workers’ comp on fileNot yet collected
Review volume10%Number of Google reviews, compared with the most-reviewed business on the listMeasured
Recency5%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday, 24/7 or same-dayMeasured
Trade focus10%How clearly the business does this trade (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)Measured
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodicallyMeasured
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there areMeasured

Solar installers in Leicester: frequently asked questions

Who is the best solar installer in Leicester?

By CR Score, the highest-ranked solar installer in Leicester, MA is Boundless, Inc. with a CR Score of 62/100. It has 4.8★ from 464 Google reviews. It is open 7 days a week. Sunrun Solar (#2) and Old Glory Solar (#3) follow. We ranked 120 solar installers on ten factors, last updated October 22, 2026.

Which solar installers in Leicester are open 24/7?

9 ranked solar installers in Leicester post 24/7 hours. The highest-ranked are Old Glory Solar (#3), On Call Electric (#9) and NEC Electric & Solar (#13). Hours come from each business's Google listing as of October 2026, so call to confirm.

Which solar installers in Leicester work on weekends?

65 of 120 ranked solar installers post Saturday hours and 27 post Sunday hours. The highest-ranked open Saturdays are Boundless, Inc. (#1), Sunrun Solar (#2) and Old Glory Solar (#3). Posted hours are office hours; crews may book weekend jobs separately.

How much does solar panel installation cost in Leicester?

Solar panel installation typically costs $28,990 to $35,670, with $32,790 typical (Per system: about 12 kW at about $2.60 per watt, before incentives. US national range × 1.05 New England factor (2025 Cost vs. Value Report)). The range is adjusted for Massachusetts. Prices were last checked October 2026. Get at least two written quotes before you hire.

What Google rating do Leicester solar installers have?

The median Google rating among 120 rated solar installers in Leicester is 4.9★, with a median of 17 reviews. Summit Energy has the most, 824 reviews, and ranks #10. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ContractorsRanked rank solar installers?

Each solar installer 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.

Do solar installers outside Leicester count in this ranking?

Yes, if they are within 40 mi of the Leicester city center, our service radius for solar installers. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.

Can solar installers pay to rank higher on ContractorsRanked?

No. The CR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured businesses may appear above the list, labelled Featured and showing their honest rank.

Update log for Leicester

  1. October 2026: CR Scores recalculated for 120 solar installers serving Leicester.

More solar installers and Leicester pages

Other trades in Leicester