Critical Mass Solar
No recent recordsSolar installer based in Massachusetts · active in 2 states · installer record #3153 resolved from 44 public installation records.
Data through: through Dec 2025 (LBNL Tracking the Sun; this installer's states have no monthly source yet).
At a glance
Critical Mass Solar is a solar installer with 44 recorded installations totalling 431 kW, dated 2018 to 2021. Its records are concentrated in Massachusetts (91%), where it ranks 136th of 487 profiled installers by volume and 3,647th of 10,840 nationally. The median installed price across 43 priced systems from all years is $3.38/W before incentives.
Track record
Install volume by year
Recorded installs per year; prices by year are in the table below.
Pricing
Price by year (solar only)
| Year | Priced systems | Critical Mass Solar | Massachusetts median | vs state |
|---|---|---|---|---|
| 2020 | 21 | $3.30/W | $3.46/W | −5% |
| 2019 | 11 | $3.38/W | $3.46/W | −2% |
| 2018 | 7 | $3.84/W | $3.88/W | −1% |
Median installed price per DC watt before incentives, systems without a battery, by the year in the public record. Years with fewer than five priced systems are left out.
Why a company's own figure can differ from this one
- Timing. These prices come from state incentive filings, published about once a year, so the latest full year here is the last year of data. Prices moved down in many states after 2023; a company's current quotes can be lower (or higher) than its last full year on record.
- Dates. A filing is dated when the program processed it, not when the job was sold, so jobs can land in a different month or year than in the company's own books.
- What the price includes. The filed price is the whole project as reported to the program, which can include loan dealer fees, electrical panel upgrades or roof work. A company's internal figure often leaves those out.
- Batteries. Systems flagged with a battery are excluded here; a battery the filing didn't flag can still raise a year's median.
Latest records
Most recent recorded installs
| Date | Location | Size | Price | Ownership |
|---|---|---|---|---|
| May 20, 2021 | Lancaster, MA | 6.4 kW | $19,750 | Host-owned |
| May 13, 2021 | Fitchburg, MA | 6.4 kW | $21,000 | Host-owned |
| Mar 16, 2021 | Richmond, NH | 8.4 kW | $25,000 | Host-owned |
| Dec 16, 2020 | Methuen, MA | 6.8 kW | $22,400 | Host-owned |
| Dec 10, 2020 | Gardner, MA | 5.7 kW | $19,000 | Host-owned |
| Nov 20, 2020 | Fitchburg, MA | 11.6 kW | $38,000 | Host-owned |
| Oct 24, 2020 | Leominster, MA | 12.4 kW | $44,800 | Host-owned |
| Oct 21, 2020 | Leominster, MA | 12 kW | $33,400 | Host-owned |
| Oct 19, 2020 | Townsend, MA | 9 kW | $31,000 | Host-owned |
| Sep 5, 2020 | Tyngsborough, MA | 13.4 kW | $53,600 | Host-owned |
See all 44 installations →searchable & filterable; export to CSV with a free account
Service geography
Busiest cities
Record
- Installer ID
- PC-3153
- First recorded install
- Aug 8, 2018
- Last recorded install
- May 20, 2021
- Priced records
- 43
Is this your company?
Owners can claim this profile free with a work email to keep the website and description current and post the company's own price figures beside ours.
If a record here isn't yours, a state is wrong, or a figure looks off, report a correction. We read every one and fix the record, usually within a few days.
How does Critical Mass Solar compare with other installers in Massachusetts?
By recorded installations Critical Mass Solar ranks 136th among the 487 installers based in Massachusetts with five or more records. Its all-years median price of $3.38/W is about 19% below the Massachusetts median of $4.17/W (the installer's median covers every state it works in). Its median system, 9.9 kW, is about 32% above the state median of 7.5 kW. 0% of its recorded installations are third-party owned (lease or power-purchase agreement), against 47% across Massachusetts. 2% include battery storage, compared with 4% of Massachusetts records. Installers of similar recorded volume in Massachusetts include Grid Builders (45), Nrgtree (45) and Ronald R Coler (45).
How has Critical Mass Solar's installation volume changed?
Critical Mass Solar's earliest dated installation on record is from 2018. It has recorded installations in 4 calendar years. The busiest year was 2020, with 21 installations. 2021, its latest year with records, has 3. Its median price per watt moved from $3.84/W in 2018 to $3.10/W in 2021. The most recent recorded installation is dated May 20, 2021. No installation in the public records is dated within the last three years.
Where does Critical Mass Solar install solar?
Recorded installations span 2 states: Massachusetts (40, 91%) and New Hampshire (4, 9%). The cities with the most of its installations are Fitchburg, MA (7), Townsend, MA (5), Leominster, MA (5), Richmond, NH (2) and Pepperell, MA (2).
Frequently asked questions
How many solar installations has Critical Mass Solar completed?
PanelCensus records 44 installations by Critical Mass Solar, from Aug 8, 2018 to May 20, 2021, totalling 431 kW of capacity. Public reporting varies by state, so the company's true total may be higher.
What does Critical Mass Solar charge for solar?
The median installed price across 43 priced systems from all years is $3.38/W before incentives (median system 9.9 kW, about $34,500). The Massachusetts median is $4.17/W. Prices are the total project cost reported to state programs, so they can include work billed with the solar.
Where does Critical Mass Solar install solar?
Recorded installs span 2 states, led by Massachusetts (40) and New Hampshire (4). Its busiest city is Fitchburg, MA.
Is Critical Mass Solar still installing solar?
The most recent installation attributed to Critical Mass Solar in the public records is dated May 20, 2021; 2021 has 3 recorded installations. Records here run through Dec 2025 (LBNL Tracking the Sun; this installer's states have no monthly source yet), so the newest installations may not appear yet.
Does Critical Mass Solar install leased or PPA solar systems?
0 recorded installations by Critical Mass Solar (0%) are third-party owned — a lease or power-purchase agreement; across Massachusetts the share is 47%.
Does Critical Mass Solar install battery storage?
1 recorded installation by Critical Mass Solar (2%) includes a battery.
Related installers and places
- All solar installers in Massachusetts· 487 profiles
- Solar installations in Massachusetts· 159,600 records
- Grid Builders· 45 installations
- Nrgtree· 45 installations
- Ronald R Coler· 45 installations
- Defreitas Enterprises· 44 installations
- Morsolar· 44 installations
- Benjamin OConnell· 44 installations
- Solar in New Hampshire· 4 by Critical Mass Solar
Dataset updated . Sources: LBNL Tracking the Sun (through 2025), monthly state program records (California DGStats, NYSERDA, NJ Clean Energy, Illinois Shines) and permit records; installer resolved by exact-normalized name matching and, for state program records, by the systems both sources share.
About this data
Source: Lawrence Berkeley National Laboratory's Tracking the Sun, merged with city permit records, state incentive programs and the USGS U.S. Large-Scale Solar Photovoltaic Database / EIA-860 plant registers, as published September 21, 2026 — PanelCensus refreshes it as each source publishes new records. See the methodology for how records are matched, cleaned and scored.
Cite as: PanelCensus, “Critical Mass Solar, solar installer (Massachusetts)”, https://panelcensus.com/installers/massachusetts/critical-mass-solar-3153 (data as of September 21, 2026).