Solar Incentives and Rebates in New Hampshire

Peak Sun Hours (PSH): 4.0 - 4.3
Cost of Grid Power: $0.20/kWh
Number Of Installations: 8,700

What’s the Cost of Solar in New Hampshire?

Cost of Grid Power

New Hampshire's electricity prices average $0.20/kWh, well above the national average of $0.14/kWh. The state has no solar power facilities which produce 1-megawatt or more, and small-scale solar accounted for less than 1% of net power generation in 2019.

Cost of a Solar Install

Cost of a typical 6kW PV install in New Hampshire from 2011-2018

A graph of slowly falling prices for a typical 6kW PV install in New Hampshire from 2011-2018. Figures include design costs. Data from Berkeley Lab, courtesy of the New Hampshire Public Utilities Commission (NHPUC).

The average cost of a 6kW (equivalent to saving over 100 trees a year) solar power system starts around $18,000 in New Hampshire. Before any incentives, in the first year you’d save about $1,600, compared to if you had been paying the normal rates for the energy you used. These savings can continue for well over 25 years, improving with inflation.

Just How Much Can I Save With Solar in New Hampshire?

This depends on may factors such as your system size, power output, and financing. Here are the main ways you can finance your home solar power system, and the kinds of returns you may expect to see:


From our example above, the homeowner purchased a 6kW system to offset their energy bill. Overhead cost was $18,000, with a significant proportion returned in the first year through incentives, rebates, and savings, then paying itself in full over 8 years.

Most solar power systems have a warranty lifetime of 25 years. In that time, between incentives and paying lower rates you could make a profit of around $33,000 - nearly twice the up-front cost of the system!

Even with occasional maintenance or part replacement, that is a massive savings. Solar panel power output falls on average 0.8% per year, so with a little TLC and load management you can extend the life of your system well beyond the warranty’s expiration date, continuing to save indefinitely.

Solar Loan

Whether or not you can afford the up-front cost of the install, you may want to consider a Home Equity Line of Credit (HELOC). With equity in your home, or good credit, you may qualify for a 15-year solar HELOC with fixed rate of 4% or lower.

Starting with that same 6kW system costing $18,000 but with zero up-front cost, accounting for incentives, credits, rebates, and annual energy savings starting around $1,600, you could see a revenue surplus of about $4,600 at the end of the first year.

During the loan's 15-year term, your loan payments will likely match your power savings very closely. Because of this, .in the first fifteen years you should basically break even. Once the loan is paid off, you can expect to save about $2,000 a year. Over 25 years you could expect to make about $26,500.

Power Purchase Agreement

With a Power-Purchase Agreement (PPA) the homeowner leases their roof to an outside party, usually a power company. Generally PPAs feature a fixed price per kWh, with either a fixed term or an annual escalator.

With a PPA, the cost of installation, repair, and maintenance to the homeowner is usually $0.00. For that 6kW system, with a PPA you could expect to save about $45/month on energy. Over 25 years, you could see over $17,000 in revenue - without accounting for inflation. That’s technically an infinite return!

PPA’s can be complicated, as you are effectively ceding at least some control of your home to the third party, but they are an excellent way to get into solar because they have no overhead.

What Incentives are Available in New Hampshire?

Data from DSIRE. For more info visit: https://www.dsireusa.org/

Name Implementing Sector Program Type Administrator DSIRE ID
Solar Easements State Solar/Wind Access Policy 21
Net Metering State Net Metering 283
Interconnection Standards State Interconnection 836
System Benefits Charge State Public Benefits Fund 2293
New Hampshire - Proper Municipal Regulations to Encourage Renewable Energy and Energy Conservation State Solar/Wind Access Policy 4679
New Hampshire Electric Co-op - Residential Energy Efficiency Loan Utility Loan Program 5807
Eversource - New Equipment & Construction Schools Program Utility Rebate Program 5827
Liberty Utilities (Electric) - Commercial Energy Efficiency Loan Program Utility Loan Program 5829
Energy Efficiency Resource Standard State Energy Efficiency Resource Standard Utilities 5920
New Hampshire Public Utilities Commission - Core Energy Efficiency Programs State Energy Analysis New Hampshire Public Utilities Commission 16296
New Hampshire Public Utilities Commission - NHSaves State Energy Analysis New Hampshire Public Utilities Commission 17272
New Hampshire Office of Energy and Planning - Energy Efficiency Rebates and Incentives State Energy Analysis New Hampshire Office of Energy and Planning 18964
National Grid - Building Energy Code Training Utility Training and Information National Grid 21542
National Grid - Existing Facility Incentives Utility Energy Analysis National Grid 21543
National Grid - Energy Profiler Online Utility Energy Analysis National Grid 21545
National Grid - Heating and Cooling Tips Utility Other National Grid 21593
National Grid - Power Quality Enhancements Program Utility Other National Grid 21594
National Grid - Enhanced Metering Utility Energy Analysis National Grid 21596
Unitil - Electric Programs, Rebates and Assistance Utility Energy Analysis Unitil 21622
National Grid - Large Business Program Utility Energy Analysis National Grid 21645
National Grid - Rhode Island Energy Efficiency Services Utility Energy Analysis 21646
National Grid - New Construction Program Utility Energy Analysis 21647
U.S. Department of Energy - Industrial Assessment Center (IAC): University of Massachusetts Federal Energy Analysis U.S. Department of Energy 21670
Unitil - Energy Saving Tips Utility Training and Information Unitil 21672
ISO New England - Demand Resources Other Energy Analysis ISO New England 21735
Liberty Utilities - Large Business Program Utility Energy Analysis Liberty Utilities 21885
New Hampshire Electric Coop - Energy Efficiency Programs Utility Other New Hampshire Electric Coop 21886
Unitil - Commercial & Industrial (C&I) New Equipment & Construction Program Utility Energy Analysis Unitil 21893
Northeast Energy Efficiency Partnerships - EM&V Forum Non-Profit Training and Information Northeast Energy Efficiency Partnerships 22018
Liberty Utilities (Gas) - Residential Energy Efficiency Programs Utility Rebate Program 22080


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