Solar by state
Solar in Connecticut, by the numbers
Utilities and their rates, adoption, ten years of growth, batteries, ownership, state rules and installer licensing in Connecticut, from federal 2024 data.
Connecticut in brief
6.69% of Connecticut homes had rooftop solar in 2024, the 6th-highest of 51 (3.55% nationally). Power cost 28.75¢/kWh, above the national 16.48¢, and the average system was 7.71 kW. Connecticut Light & Power Company serves 76.2% of homes.
Where does Connecticut stand out?
The four measures, beyond price and adoption, on which Connecticut sits furthest from the middle of the ranking.
Connecticut solar in numbers, 2024
Every Connecticut figure next to the national one, with its place in the ranking (highest first, out of the jurisdictions reporting it).
| Measure | Connecticut | United States | Rank |
|---|---|---|---|
| Homes with a metered rooftop system | 6.69% | 3.55% | 6th-highest of 51 |
| Rooftop systems counted | 103,824 | 5,077,543 | 11th-highest of 51 |
| Average system size | 7.71 kW | 6.74 kW | 18th-highest of 51 |
| Residential price | 28.75¢/kWh | 16.48¢/kWh | 4th-highest of 51 |
| Average monthly bill | $199.66 | $142.26 | 2nd-highest of 51 |
| Use per home | 8,335 kWh/yr | 10,359 kWh/yr | 17th-lowest of 51 |
| Systems with a battery | 0.65% | 5.86% | 16th-lowest of 47 |
| Leased or on a PPA | 53.8% | 29.1% | 3rd-highest of 38 |
| Growth in systems, five years | 19.0% a year | — | 14th-lowest of 51 |
| Minutes without power per customer | 153 | 297 (median state) | 11th-lowest of 51 |
| Homes on a time-varying rate | 4.6% | 11.1% | 15th-highest of 51 |
| Installed rooftop capacity | 800.6 MW | 34,226 MW | — |
Source: US EIA, Form EIA-861, 2024 final release, retrieved 2 September 2026. The Connecticut ratios and ranks are HyreSolar calculations from EIA inputs.
Which utility serves Connecticut, and what does it charge?
The 6 largest utilities selling to Connecticut homes, by residential customers, with the price full-service customers paid and how many run net-metered solar.
| Utility | Type | Homes served | Price per kWh | Use per home, monthly | Net-metered systems |
|---|---|---|---|---|---|
| Connecticut Light & Power Company | Investor-owned; wires, 79% on its own supply | 1,174,420 (76.2%) | 28.51¢ | 699 kWh | 79,274 (6.8%) |
| United Illuminating Company | Investor-owned; wires, 82% on its own supply | 312,291 (20.3%) | 34.04¢ | 561 kWh | 23,614 (7.6%) |
| Town of Wallingford | Municipal | 21,405 (1.4%) | 15.65¢ | 828 kWh | 57 (0.27%) |
| City of Norwich | Municipal | 18,870 (1.2%) | 22.78¢ | 616 kWh | 67 (0.36%) |
| Groton Department of Utilities | Municipal | 12,284 (0.80%) | 18.70¢ | 715 kWh | 812 (6.6%) |
| Bozrah Light & Power Company | Municipal | 2,434 (0.16%) | 19.33¢ | 832 kWh | None reported |
Source: US EIA, Form EIA-861 2024, Sales to Ultimate Customers and Net Metering, utility level, retrieved 5 October 2026. Shares are of 1,541,704 Connecticut residential accounts. Each Connecticut price is residential revenue divided by sales for full-service customers (HyreSolar calculation); a wires company’s price is its default-service price.
What do the Connecticut utility figures mean for a solar quote?
EIA-861 lists 6 utilities serving homes in Connecticut in 2024, across 1,541,704 residential accounts. The three largest, Connecticut Light & Power Company, United Illuminating Company and Town of Wallingford, served 97.8% of those homes. By ownership: investor-owned utilities 96.4% and municipal utilities 3.6%.
306,277 Connecticut homes (19.9%) bought their energy from 10 competitive suppliers, while the local utility kept delivering it. On a supplier, the energy price on your bill is the supplier’s, so price a solar quote against your own bill rather than the utility prices in the table.
Connecticut Light & Power Company, the largest, served 1,174,420 Connecticut homes (76.2%). Its full-service residential customers paid 28.51¢ per kWh, below the Connecticut average of 28.75¢, and used 699 kWh a month on average. 79,274 of its customers ran net-metered rooftop solar, 6.8% of its homes against 6.69% statewide.
Among the 5 Connecticut utilities with at least 5,000 residential customers and a full-service price, the price ran from 15.65¢ at Town of Wallingford to 34.04¢ at United Illuminating Company.
At the Connecticut average of 8,335 kWh a year, that 18.39¢ gap is worth about $1,533 a year (our arithmetic), so the same system offsets more money in one territory than the other.
Price a quote on your own utility’s rate, not the 28.75¢ Connecticut average.
Rooftop solar is concentrated: Connecticut Light & Power Company alone accounts for 79,274 net-metered residential systems, about 76% of the 103,824 counted in Connecticut, and 5 Connecticut utilities reported any at all. The highest adoption among the larger utilities was at United Illuminating Company, where 7.6% of homes had a system.
What does power cost in Connecticut, and why does it matter?
Residential electricity in Connecticut averaged 28.75¢ per kilowatt-hour in 2024, the 4th-highest of 51 and above the national 16.48¢. That is one of the highest residential prices in the country.
Each kilowatt-hour a system covers on site is one not bought at that price, so self-consumption carries more value in Connecticut than in all but a handful of states.
The average Connecticut household bill was $199.66 a month ($2,396 a year), the 2nd-highest of 51, against $142.26 nationally. That $2,396 is the ceiling on what solar could save a typical Connecticut home, before fixed monthly charges.
Only 4.6% of Connecticut homes were on a time-varying rate in 2024 (11.1% nationally), so a flat rate is the likely starting point. 21.7% of Connecticut residential meters were smart meters (83.8% nationally), and a time-varying rate needs one. How time-of-use changes solar.
How many Connecticut homes have solar?
Connecticut had 103,824 rooftop systems on net metering in 2024, across 1,552,746 residential accounts: 6.69% of homes, the 6th-highest of 51. Connecticut is one of the most established rooftop markets in the country. A market this size can mean more installers to compare and permit offices used to solar applications.
The Connecticut market counted 13,142 more systems in 2024 than in 2023 and has grown 19.0% a year over five years, the 14th-lowest of 51. Where growth has turned nationally.
How has Connecticut solar changed since 2014?
Connecticut counted 7,195 net-metered rooftop systems in 2014 and 103,824 in 2024, 14.4 times as many. The share of homes with one moved from 0.49% to 6.69%. The biggest one-year addition came in 2023, with 17,699 more systems than the year before.
| Year | Rooftop systems | Share of homes | Average size | Residential price |
|---|---|---|---|---|
| 2014 | 7,195 | 0.49% | 6.6 kW | 19.75¢ |
| 2016 | 23,195 | 1.56% | 6.7 kW | 20.01¢ |
| 2018 | 34,473 | 2.29% | 7.1 kW | 21.20¢ |
| 2020 | 51,987 | 3.42% | 7.1 kW | 22.71¢ |
| 2022 | 72,983 | 4.75% | 7.0 kW | 24.61¢ |
| 2024 | 103,824 | 6.69% | 7.7 kW | 28.75¢ |
Source: US EIA, Form EIA-861 annual files 2014–2024, net-metered residential systems, retrieved 2 September 2026. Connecticut shares and sizes are HyreSolar calculations.
What does the Connecticut trend mean for a savings estimate?
Over the same years the Connecticut residential price went from 19.75¢ to 28.75¢ per kWh, up 46%, and the average system from 6.6 kW to 7.7 kW. A rate that has risen that far makes a 2024 bill a conservative base for a Connecticut savings estimate only if the trend continues, which nobody can promise.
How big is a typical Connecticut system?
The average Connecticut system was 7.71 kW in 2024, the 18th-highest of 51, against 6.74 kW nationally. Connecticut homes used 8,335 kilowatt-hours a year each, the 17th-lowest of 51.
A Connecticut home using 8,335 kWh is an average, not a design input: size from your own twelve months of bills and usable roof with cost by system size and the system size calculator.
Who owns the systems in Connecticut?
In Connecticut, 53.8% of systems were third-party owned in 2024: leased, or on a power purchase agreement (PPA), rather than owned by the household. That is the 3rd-highest of 38, against 29.1% nationally.
Third-party ownership is the common way solar is sold in Connecticut. Expect a lease or power purchase agreement to be offered, and check who will own the equipment before you sign. Whoever owns a Connecticut system claims any tax credit on it: Section 48E explained.
Do Connecticut homes add batteries?
In Connecticut, 0.65% of solar systems were paired with a battery in 2024 (677 systems), the 16th-lowest of 47. Connecticut’s share is well under half the national 5.86%.
On reliability, the average Connecticut customer went 153 minutes without power in 2024 counting major storms, and 74 minutes without them. The median state saw 297. Outages in every state.
Whether a battery pays in Connecticut turns on your utility’s export credit and your own outage history: what a home battery does.
Which Connecticut solar laws have we read?
Connecticut statutes we read ourselves. Any rule not listed here is one we have not read, not one that does not exist.
Property tax on the added value
A statutory exemption for qualifying residential systems installed from October 1, 2007, where estimated production does not exceed estimated load.
Conn. Gen. Stat. § 12-81(57). Read from a third-party copy of the code on September 2, 2026, not yet confirmed against the state’s own publisher. Property tax exemptions
How do you check a solar company’s license in Connecticut?
We checked 27 Connecticut solar companies from June to August 2026 against the Connecticut Department of Consumer Protection. None of those showed an expired or revoked license when checked.
Ask which license a company holds, then confirm the number with the issuing authority yourself.
These counts describe the companies we checked on those dates, not every company in Connecticut, and a license current then may have lapsed since. How to verify a solar license.
Which states are closest to Connecticut on adoption?
The six jurisdictions nearest to Connecticut’s 6.69% share of homes with rooftop solar.
Where do the Connecticut numbers come from?
The Connecticut figures are HyreSolar calculations from the Form EIA-861 annual files: 103,824 net-metered residential systems counted against 1,552,746 residential accounts, sizes as means, and 6 utility-level rows for the utility table, matched to net-metering records by EIA utility number.
The method and limits cover all 51; the Connecticut row is in the data as a CSV.
No Connecticut figure here is an estimate for one home: your roof, usage, utility tariff and tax position decide that.
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Questions
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