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Dover solar costs $2.80–$3.15 per watt in 2026. A typical 8 kW system runs $22,400–$25,200. As the Strafford County seat and hub of the Seacoast Tri-Cities, Dover has competitive installer pricing but one key disadvantage: no property tax exemption.
Avg Cost/Watt
$2.975/W
8 kW System
~$23,800
Federal ITC
$0
Cash Payback
~10.6 yr
Federal Residential Solar Tax Credit (Section 25D) Expired December 31, 2025
Dover homeowners who purchase solar with cash or a loan receive $0 in federal tax credits. NH state rebate was also permanently repealed (SB 303). All prices below reflect what you actually pay. PPA/lease providers can still claim Section 48/48E (30%) through July 4, 2026. Full NH solar guide
Dover Has NOT Adopted the Solar Property Tax Exemption (RSA 72:62)
Unlike Portsmouth and Exeter, Dover has not voted to exempt solar energy systems from property tax. Solar panels will increase your assessed value, adding an estimated ~$584/year in property taxes. You can advocate for RSA 72:62 at the annual town meeting. NH solar tax benefits
Dover pricing reflects Eversource NH territory and the Seacoast installer market. No federal ITC, no state rebate — these are real 2026 out-of-pocket costs.
| System Size | Price Range |
|---|---|
| 5 kW | $14,000–$15,750 |
| 6 kW | $16,800–$18,900 |
| 8 kWMOST COMMON | $22,400–$25,200 |
| 10 kW | $28,000–$31,500 |
| 12 kW | $33,600–$37,800 |
Prices as of March 2026. Based on Dover/Seacoast-area installer data and EnergySage NH marketplace. No federal 25D ITC ($0). No NH state rebate (SB 303). No state sales tax (NH advantage).
Dover's competitive Seacoast pricing is partially offset by the lack of a property tax exemption — a key factor in payback calculations.
Dover is served by Eversource NH at $0.25/kWh. NEM 2.0 credits are approximately $0.21/kWh (~85% of retail). Credits roll over indefinitely with cash-out at the $100 threshold. Rates are locked through 2041 under Docket DE 16-576.
Dover has NOT adopted RSA 72:62. Solar panels add to your assessed property value, costing roughly $584/year in additional taxes on a typical 8 kW system. You can advocate for adoption at Dover town meeting. Nearby Portsmouth and Exeter have adopted it.
Dover benefits from the Seacoast installer ecosystem. Proximity to Portsmouth and the Tri-Cities corridor (Dover, Rochester, Somersworth) means good installer access and competitive pricing at $2.80-$3.15/W, slightly below the state average.
New Hampshire has no state sales tax at all. Unlike MA (6.25%) or ME (5.5%), you pay zero sales tax on solar equipment and installation. This saves $1,500+ compared to neighboring states on a typical system.
Dover has a mix of historic downtown multi-family buildings and newer suburban development. Older downtown homes may need electrical panel upgrades ($1,500-$3,000) or roof work before solar. Newer neighborhoods off Route 4 are straightforward installations.
Dover participates in the Community Power Coalition of NH (CPCNH). Community Power can lower the supply portion of your bill by 5-15%. Solar customers still get NEM credits through Eversource for delivery and transmission.
How an 8 kW cash-purchased system pays back in Dover — note the impact of no property tax exemption on payback time.
Property Tax Impact in Dover
Because Dover has not adopted RSA 72:62, your solar system adds to assessed property value. On an 8 kW system valued at ~$15,000, this means roughly $584/year in additional property taxes. In Portsmouth (which has adopted 72:62), you would save that $584 instead. Over 25 years, this is a ~$14,600 swing. Talk to your city councilor about putting RSA 72:62 on the next town meeting warrant.
Third-Party Ownership (TPO) Still Has the ITC
If you go with a PPA or lease, the financing company claims Section 48/48E (30%) on systems beginning construction before July 4, 2026. You get a lower monthly rate because of it. You do not own the system and NEM credits typically go to the system owner.
Dover has competitive $/W pricing but the property tax exemption gap is a real cost difference. Notice which cities have adopted RSA 72:62.
| City | Cost/W | 8 kW Avg | Tax Exempt |
|---|---|---|---|
| DoverYOU ARE HERE | $2.80-$3.15/W | $23,800 | No |
| Rochester | $2.80-$3.10/W | $23,600 | No |
| Portsmouth | $2.95-$3.30/W | $25,000 | Yes |
| Exeter | $2.90-$3.25/W | $24,600 | Yes |
Dover and Rochester share similar pricing and both lack the property tax exemption. Portsmouth and Exeter cost more per watt but benefit from RSA 72:62, saving ~$584/year in property taxes.
Dover has a straightforward permitting process. Most residential solar permits are issued within 2-3 weeks.
Your installer submits plans to Dover Community Development / Building Division. Standard residential solar permits include structural and electrical drawings. Typical processing: 1-2 weeks.
Physical installation of panels, inverter, and electrical connections. Most Dover homes with standard roofs are completed in 1-2 days. Older downtown multi-family may require additional structural work.
Dover electrical inspector signs off on the installation. Typically scheduled within 1 week of completion.
NEM 2.0 enrollment and bi-directional meter installation. Takes 2-4 weeks after passing inspection. Your installer submits the interconnection application.
Total timeline: 5-8 weeks from signed contract to system activation. Dover has no historic district restrictions that would block residential solar.
Three paths to solar in Dover. Each has different economics now that the federal credit is gone.
~$23,800 upfront. All NEM credits go to you. No property tax savings in Dover (RSA 72:62 not adopted). Best long-term value with ~10.6-year payback.
25-year savings: ~$52,859
$0 down, 6-8% APR typical. You own the system and keep NEM credits. Monthly payments $180-$260 for 15-20 year terms. NH has no special subsidized loan program.
Total cost with interest: ~$32K-$40K
$0 down. Financing company claims 48/48E (30%) — deadline July 4, 2026. You get reduced electricity cost. You do not own the system.
Monthly: ~$110-$170 (fixed PPA rate)
Dover, Rochester, and Somersworth form the Tri-Cities corridor. This concentration drives installer competition from Portsmouth-based companies servicing the whole Seacoast. The result: $2.80-$3.15/W, slightly below the NH state average of $3.03/W.
The University of New Hampshire in adjacent Durham creates an academic and environmentally conscious community. This drives strong solar adoption rates across the Dover-Durham corridor, supporting a healthy local installer ecosystem.
Dover's Spaulding Turnpike and Route 4 corridors are seeing new residential and commercial development. Newer homes in these areas are ideal for solar — modern roofs, updated electrical panels, and no structural concerns.
Dover's lack of RSA 72:62 means a ~$584/year property tax penalty that Portsmouth and Exeter residents avoid entirely. Over 25 years, that is ~$14,600 in lost savings. Despite this, Dover's lower $/W pricing (~$1,200 cheaper than Portsmouth on an 8 kW system) partially offsets the first few years.
Solar panels in Dover NH cost $2.80-$3.15 per watt installed in 2026, averaging about $2.975/W. For a typical 8 kW system, that is $22,400-$25,200 with an average of $23,800. There is no federal tax credit (25D expired December 31, 2025) and no NH state rebate (SB 303 repealed it). The price you see is the price you pay.
No. Dover has NOT adopted RSA 72:62, which means solar panels are included in your assessed property value. A typical 8 kW system could add approximately $584 per year in property taxes. This is a significant cost difference compared to Portsmouth and Exeter, which have adopted the exemption. Dover residents can advocate for RSA 72:62 adoption at the annual town meeting.
Dover is in Eversource NH territory with residential rates averaging $0.25/kWh. Under NEM 2.0, solar credits are approximately $0.21/kWh (about 85% of retail). The NEM 2.0 formula is 100% supply + 100% transmission + 25% distribution. Credits roll over monthly indefinitely, with cash-out at the $100 threshold. Rates are locked through January 1, 2041.
A cash-purchased 8 kW system in Dover pays back in approximately 10.6 years. This is longer than cities with property tax exemptions because Dover has not adopted RSA 72:62, adding ~$584/year in taxes rather than saving it. Despite this, Dover's lower $/W pricing partially offsets the disadvantage.
No, if you buy with cash or a loan. Section 25D (the 30% residential solar ITC) expired December 31, 2025. However, if you go with a third-party owned system (PPA or lease), the financing company can still claim Section 48/48E (30%) on systems that begin construction before July 4, 2026. The TPO provider passes some of that savings to you as a lower rate.
Statewide costs, NEM 2.0, and payback analysis
Seacoast premium, $2.95-$3.30/W, tax exempt
Queen City, $2.85-$3.20/W, tax exempt
RSA 72:62, NEM 2.0, and what Dover is missing
Compare financing paths with no ITC
NEM 2.0 credits, rollover rules, cash-out
See exactly what solar costs for your Dover home. We factor in Eversource rates, NEM 2.0 credits, the property tax impact, your roof, and Community Power participation. No ITC padding — just real 2026 numbers.
Serving Dover, Rochester, Somersworth, Durham, and the Seacoast Tri-Cities