New Hampshire solar installation & market data
The New Hampshire solar market at a glance.
New Hampshire has about 27,310 solar systems totalling 328.0 MW, as reported by its utilities through July 2026. 21 MW of residential solar was added in the trailing twelve months, down 26.2% on the twelve months before. 6.5% of owner-occupied homes have gone solar and 3.0% of solar customers have a battery. SolarDNA tracks 10,199 individual installations here, with a median residential cost of $3.44 per watt, from 286 installers.
New Hampshire's SolarDNA Market Score: 35 out of 100.
New Hampshire scores 35 out of 100 on SolarDNA's Market Score, a 0-to-100 scale benchmarked against every other state market. That is higher than 27% of U.S. states. Grade D (Fair).
The score combines 5 subscores, each computed from observed market data:
- Velocity (24): trailing-12-month growth in solar added versus the prior twelve months, so accelerating markets score higher.
- Cost (68): median installed $/W relative to the national median (a cheaper market scores higher).
- Incentives (34): net-metering coverage, RECs a new system can earn, state tax credit, rebate program and tax exemptions (components listed below).
- Resource (13): annual solar irradiance, so the same system produces more where this score is high.
- Depth (43): proven demand: how many systems are already installed, with a bonus for markets that show adoption without being saturated.
Small residential rebate; property tax exemption is a local option.
Federal: Federal residential credit (25D) ended for systems placed in service after Dec 31, 2025. Third-party-owned systems can still use the commercial credit (48E) through 2027 under construction-start rules.
State-level averages hide wide variation. Here's how to go deeper in the app:
- 1Narrow to a zip codeZip metrics give a far more accurate picture of the exact neighborhoods you are considering.
- 2Apply filtersFilter by score, growth, $/W, adoption and permits to reach the markets that actually match your model.
- 3Benchmark the installersSee who already wins there, how fast they are growing, and what they charge per watt.
How SolarDNA defines these metrics
Solar systems
Solar systems is the market-size figure: the systems utilities report on their lines, plus an estimate (sized from reported capacity) for systems outside net metering. It is current for every state.
How SolarDNA calculates solar systems →Tracked installations
Tracked installations are the individual residential, commercial and utility-scale systems SolarDNA holds a record for. SolarDNA de-duplicates the same system across records. Pricing, installers, equipment and every zip-level figure come from these records.
How SolarDNA calculates tracked installations →Median installed cost
Median installed cost is the middle price per watt (DC) that homeowners paid for a residential system in the trailing twelve months, before incentives. Quartiles show the spread.
How SolarDNA calculates median installed cost →Adoption rate
Adoption rate is the share of owner-occupied homes with a residential solar system. It measures how saturated a market is, not how fast it is growing.
How SolarDNA calculates adoption rate →12-month growth
For a state, growth compares the residential solar capacity added in the trailing twelve months with the twelve months before, from utility-reported totals with one-off reporting corrections smoothed out. For cities and zip codes it compares tracked installations.
How SolarDNA calculates 12-month growth →Battery share
Battery share is the portion of a state's solar customers whose system includes a battery, as reported by utilities.
How SolarDNA calculates battery share →Permits
Permits count the solar building permits filed in the last twelve months. They lead installations by several months, which makes them the earliest read on demand.
How SolarDNA calculates permits →Market Score
SolarDNA's Market Score grades each market from 0 to 100 on solar sales potential, weighing velocity, cost, incentives, solar resource and installer depth. Markets are benchmarked against every other market in the country, and the letter grade is set on a curve: A is the top 10% of markets, C the middle 40%, F the bottom 10%.
How SolarDNA calculates market score →See what a specific New Hampshire zip code looks like
Drop in any New Hampshire zip code and SolarDNA opens its market card: score, installs, median $/W, growth and permits, benchmarked against the state.
Dive deeper into the New Hampshire market
Market size & momentum
Systems, capacity, monthly additions, battery share and solar customers by utility.
- •How many solar systems are there in New Hampshire?
- •Is solar still growing in New Hampshire?
- •Which utility territories are adding the most?
Pricing & economics
Installed $/W, quartiles, system sizes and simple payback.
- •How much does solar cost in New Hampshire?
- •Is $/W falling in New Hampshire?
- •What is the median system size?
Growth & adoption
Installs by year, adoption, TAM penetration and battery attach.
- •Is solar demand growing in New Hampshire?
- •How saturated is the market?
- •How many systems add a battery?
Installers
The league table: volume, momentum, system size and pricing per installer.
- •Who installs the most in New Hampshire?
- •Which installers are growing fastest?
- •What do they charge per watt?
Utilities & incentives
Retail rates by utility, net metering, SREC value and the planned utility pipeline.
- •What are electricity rates in New Hampshire?
- •Which utilities offer net metering?
- •How big is the utility-scale pipeline?
How big New Hampshire's solar market is, and where it is heading
Totals reported by New Hampshire's utilities through July 2026 (latest months are preliminary)
Trailing-12-month residential capacity added carried forward at half the observed growth rate (capped at ±30%), with a ±13% band. Not a forecast of permits or policy.
Solar customers by utility in New Hampshire
Net-metered solar customers through July 2026
| Utility | Solar customers | Capacity | Added, 12 mo | Growth | With battery |
|---|---|---|---|---|---|
| Public Service Co of NH | 20,242 | 246 MW | 1,376 | ▼ 35.6% | 3.5% |
| Unitil Energy Systems | 2,777 | 29 MW | 144 | ▼ 29.3% | 4.1% |
| New Hampshire Elec Coop Inc | 2,265 | 24 MW | 137 | ▼ 12.7% | — |
| Liberty Utilities (Granite State Electric) Corp | 1,994 | 25 MW | 146 | ▼ 13.1% | — |
What solar costs in New Hampshire
Residential systems, trailing twelve months
How fast New Hampshire is going solar
From SolarDNA's installation records, which run through October 9, 2023; current momentum is in the market totals above
Top installers in New Hampshire
Ranked by installations in this state
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | REVISION ENERGY | 2,597 | 50 | 17.51 | $3.33 |
| 2 | GRANITE STATE SOLAR | 1,393 | 8 | 9.29 | $3.35 |
| 3 | SUNRAY SOLAR | 531 | 0 | 8.56 | $4.00 |
| 4 | FRASE ELECTRIC | 487 | 0 | 10.04 | $2.87 |
| 5 | HARMONY ENERGY WORKS | 247 | 2 | 20.76 | $3.30 |
| 6 | GO SOLAR GO | 204 | 0 | 9.81 | $3.29 |
| 7 | SOLAFLECT ENERGY | 197 | 2 | 6.98 | $4.74 |
| 8 | GOSOLAR NH | 194 | 0 | 7.66 | $3.88 |
| 9 | SUNDIAL SOLAR NJ | 184 | 0 | 8.8 | $2.90 |
| 10 | TESLA | 168 | 0 | 7.43 | $3.68 |
| 11 | ENERGY EMPORIUM | 153 | 0 | 6.88 | $3.97 |
| 12 | SOLAR DAVE | 133 | 1 | 8.81 | $2.46 |
| 13 | VH ENERGY | 113 | 2 | 9.89 | $2.70 |
| 14 | ALL ENERGY SOLAR | 110 | 2 | 10.1 | $3.95 |
| 15 | SOUTH PACK SOLAR | 108 | 0 | 7 | $3.46 |
Top zip markets in New Hampshire
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Growth | Score |
|---|---|---|---|---|
| 03301 Concord | 189 | $3.59 | — | 43.4 C |
| 03833 Exeter | 186 | $3.27 | — | 44.8 C |
| 03820 Dover | 170 | $3.27 | — | 44.8 C |
| 03755 Hanover | 162 | $3.82 | — | 42.2 C |
| 03801 Portsmouth | 155 | $3.29 | — | 44.6 C |
| 03110 Bedford | 146 | $3.44 | — | 43.8 C |
| 03825 Barrington | 124 | $3.18 | — | 45 C |
| 03257 New London | 123 | $3.13 | — | 45.2 C |
| 03824 Durham | 122 | $3.50 | — | 43.4 C |
| 03053 Londonderry | 119 | $3.48 | — | 43.5 C |
| 03857 Newmarket | 115 | $3.14 | — | 45.1 C |
| 03431 Keene | 115 | $3.39 | — | 43.9 C |
| 03458 Peterborough | 105 | $3.28 | — | 44.4 C |
| 03224 Canterbury | 104 | $2.95 | — | 46 B |
| 03037 Deerfield | 103 | $3.61 | — | 42.9 C |
Counties in New Hampshire
Zip markets grouped by county · click for the county market
| County | Zip markets | Installs |
|---|---|---|
| Rockingham County | 39 | 1,946 |
| Hillsborough County | 37 | 1,798 |
| Merrimack County | 29 | 1,495 |
| Grafton County | 38 | 1,219 |
| Strafford County | 18 | 856 |
| Carroll County | 31 | 802 |
| Cheshire County | 26 | 633 |
| Belknap County | 15 | 613 |
| Sullivan County | 17 | 436 |
| Coos County | 13 | 287 |
Utilities and retail rates
Implied residential rate per utility
| Utility | Type | Res. customers | ¢/kWh | Net metering |
|---|---|---|---|---|
| Public Service Co of NH | Investor Owned | 279,131 | 18.7 | ✓ |
| Community Power Coalition of NH | Community Choice Aggregator | 104,562 | 8.7 | — |
| New Hampshire Elec Coop Inc | Cooperative | 72,772 | 23.6 | ✓ |
| Direct Energy Services | Retail Power Marketer | 60,246 | 13.0 | — |
| Unitil Energy Systems | Investor Owned | 39,656 | 18.5 | ✓ |
| Liberty Utilities (Granite State Electri | Investor Owned | 24,689 | 19.1 | ✓ |
| Electricity NH, LLC | Retail Power Marketer | 15,091 | 15.6 | — |
| North American Power and Gas, LLC | Retail Power Marketer | 13,154 | 16.3 | — |
Other solar markets in New Hampshire
Three ways to slice New Hampshire's 10.2K installations
See how the market splits by sector, by battery attach and by installer, updated with every refresh.
See all breakdownsWhen demand peaks in New Hampshire
Quick answers about New Hampshire's market
🛡 Why trust SolarDNA data?
How many solar installations are there in New Hampshire?
How much does solar cost in New Hampshire?
Is the New Hampshire solar market growing?
What is the solar adoption rate in New Hampshire?
Is New Hampshire a good market for solar sales?
How many solar installers work in New Hampshire?
How many solar permits were filed in New Hampshire?
How current is New Hampshire's solar data?
There's a lot more inside the SolarDNA app.
- ◇Zip and city market pages
- ◇Installer league tables
- ◇Territory builder
- ◇Solarizer deal estimates
- ◇Permit activity where reported
- ◇Export the data