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5 Best Solar Companies in New Hampshire (2023)

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By Tamara Jude 6/23/2023

Despite having one of the nation’s smaller solar markets, New Hampshire is dedicated to expanding its renewable energy potential. The state aims to generate at least 25.5% of its electricity from clean energy by 2025. Using more solar energy will also help its residents save on higher-than-average electricity rates. According to the U.S. Energy Information Administration (EIA), New Hampshire residents pay 30 cents per kilowatt-hour (kWh)—nearly double the national average.

Our team spent over 60 hours researching leading solar companies on the national, regional, and local levels. We’ve chosen the best solar companies in New Hampshire, plus provided tips for choosing the right solar installer for your home.

Compare New Hampshire’s most popular solar installers.

Star Rating Best For Location Presence Link
SunPower SunPower
Best High-Efficiency System 50 States Get Quote
Sunrun Sunrun
Best Solar Panel Leasing 18 States Get Quote
LGCY Power LGCY Power
Best Solar Consultation 33 states Get Quote
Venture Solar Venture Solar
Best Northeast Regional Installer 10 States Get Quote
All Energy Solar All Energy Solar
Best Full-Service Installer 5 States Get Quote
Logo SunPower
Star Rating
Best For Best High-Efficiency System
Location Presence 50 States
Get Quote
Logo Sunrun
Star Rating
Best For Best Solar Panel Leasing
Location Presence 18 States
Get Quote
LGCY Power
Logo LGCY Power
Star Rating
Best For Best Solar Consultation
Location Presence 33 states
Get Quote
Venture Solar
Logo Venture Solar
Star Rating
Best For Best Northeast Regional Installer
Location Presence 10 States
Get Quote
All Energy Solar
Logo All Energy Solar
Star Rating
Best For Best Full-Service Installer
Location Presence 5 States
Get Quote
Star Rating
Best For
Location Presence
BBB Rating
Best High-Efficiency System
50 States
Best Solar Panel Leasing
18 States
Best Solar Consultation
33 states
Best Northeast Regional Installer
10 States
Best Full-Service Installer
5 States

New Hampshire’s Top Solar Energy Companies

SunPower: Best High-Efficiency System

SunPower pairs high-efficiency solar panels with custom-made components to create solar systems designed for high performance and maximum savings. 


Best High-Efficiency System
  • Why we chose it: You should consider SunPower if you’re looking to invest in the highest-quality solar system available. The company uses Maxeon’s high-efficiency solar panels and custom, in-house solar components designed to work optimally together.
  • Payment Options: Full purchase, loan, lease, power purchase agreement (PPA)

Learn more: SunPower review

Pros and Cons

Pros Custom, in-house solar components Comprehensive 25-year warranty on every system In-house solar storage and electric vehicle (EV) add-ons Cons More expensive than other providers, according to customer reviews Installer availability varies by ZIP code Doesn’t sell other brands’ solar components, batteries, or EV chargers, limiting customization

Warranty and Financing

SunPower includes a comprehensive 25-year warranty covering its system components, accessories, and workmanship, plus a 92% power output production guarantee.

Reputation and Awards

SunPower has been developing high-efficiency solar panels, components, and energy storage options since 1985. The company received PV Magazine’s 2019 Sustainability Award and Good Housekeeping’s 2022 Home Renovation Award in the Biggest Energy Savers category for its SunVault energy storage system.

SunPower is accredited by the Better Business Bureau (BBB) and holds an A+ rating from the company. When we read customer reviews, we noticed that many customers praised SunPower’s high-performing systems and their resulting energy savings. However, several customers complained about high pricing and poor responsiveness from third-party installers.

Learn more: SunPower review

Sunrun: Best Solar Panel Leasing

Sunrun offers unique solar lease and power purchase agreement (PPA) options that include 25 years of warranty and insurance coverage, plus ongoing maintenance throughout your contract.

Sunrun Best Solar Panel Leasing
  • Why we chose it: Sunrun offers two leasing options for homeowners uninterested in system ownership. Both options include 25-year comprehensive coverage and little to no money down.
  • Payment Options: Full purchase, loan, lease, power purchase agreement (PPA)

Learn more: Sunrun review

Pros and Cons
Pros Added insurance protections for theft or damage EV chargers and battery add-ons Multiple financing options, such as two lease types Cons 25-year warranty limited to lease and prepaid customers Online reviews call out delayed repairs
Warranty and Financing

Sunrun offers a 10-year comprehensive warranty that includes product, roof penetration, and workmanship coverage. Leasing customers receive an extended 25-year warranty that includes insurance protection for theft and damage.

Reputation and Awards

Sunrun earned DroneDeploy’s 2022 Guardian of Safety Award for using drone technology with its site assessments. In 2021 and 2022, Sunrun received 14 awards from Comparably, including Best Company Culture, Best CEOs for Diversity, and Best Company for Women.

Sunrun has an A+ rating with BBB and is accredited. Leased customers appreciated the complete warranty coverage, but other homeowners voiced concerns about delayed installations and poor customer service.

Learn more: Sunrun review

LGCY Power: Best Solar Consultation

LGCY Powers offers one of the most comprehensive solar consultation processes, including roof and electrical wiring inspections, at no extra charge.  

LGCY Power Best Solar Consultation
Pros and Cons: What Makes Them Different?
Pros Certified partner of Sunrun, one of the largest U.S. solar companies Hands-on, guided installation process from start to finish Library of informative blogs and solar power guides Cons Limited website details on offered solar products Some customer reviews noted customer support communication issues Varying product warranty lengths, depending on equipment
Why We Chose LGCY Power

LGCY Power offers a thorough solar consultation process, helping customers build the best custom system for their home. Customers receive a dedicated energy consultation that guides them through the solar panel installation. Its team also assists with applying for solar incentives, helping homeowners lower their solar panels costs. Its website includes guides and blogs on solar energy systems, financing options, and other solar-related topics.

The company works with Sunrun as a certified partner, offering its catalog of high-quality solar panels, inverters, and solar batteries. LGCY includes manufacturer and workmanship warranties. However, warranty length varies between products. LGCY also offers its customers ongoing system maintenance and 24-hour monitoring.

Warranty and Financing

LGCY offers product, inverter, and workmanship warranties. However, warranty length varies between its products.

Financing Options
✔ Full purchase
✔ Loan
✔ Lease
✔ PPAs

Reputation and Awards

LGCY ranked 17th on the 2023 Inc. 5000 for the Rocky Mountain region. The company also ranked in 2019, 2021, and 2022. Utah Business chose LGCY for its 2019 Fast 50 list, recognized as one of the state’s fastest-growing companies.

The company maintains an A rating with the BBB* and is accredited by the organization. When checking online reviews, we found customers praised LGCY Power for its dedicated project managers and informed consultants but experienced communication issues with customer support.

All Energy Solar: Best Full-Service Installer

All Energy Solar holds multiple professional licenses for solar, electrical, roofing, and building contractors, providing full-service installations to its customers. 

All Energy Solar Best Full-Service Installer
Pros and Cons: What Makes Them Different?
Pros Full-service solar installer with roofing and building contractor licenses NABCEP-certified Extensive catalog of top-selling solar panel brands Cons Higher solar equipment pricing, according to customers Varying manufacturer and performance coverage
Why We Chose All Energy Solar

All Energy Solar offers full-service installation with its in-house team, plus general electrical and solar-specific roofing services. The company handles all aspects of the installation process, including assisting customers with local solar incentive applications. All Energy Solar holds certification with the North American Board of Certified Energy Practitioners (NABCEP), one of the solar industry’s most respected certifications. 

All Energy Solar offers homeowners a one-stop shop for solar and home services. The company can even update your roof before installing solar panels, eliminating the need for additional contractors.

Warranty and Financing


All Energy Solar offers 25- to 30-year production warranties and varying manufacturer warranties based on solar equipment. Workmanship warranties also vary based on equipment. 

Financing Options

✔ Full purchase
✔ Loan

Reputation and Awards

All Energy Solar was founded in 2009 by brothers Michael and Brian Allen. Since then, the business has grown to serve 50 states for commercial projects and six states for residential installations. 

The company holds an A+ rating from the BBB and is accredited by the organization. We noted that customer reviews praised All Energy’s excellent customer service and guided installation process. We found a few reviewers who were displeased with their delayed installations

Learn more: All Energy Solar review

Venture Solar: Best Northeast Regional Installer

Venture Solar offers high-efficiency solar systems to Northeast residents, providing a more personalized and focused customer experience.

Venture Solar Best Northeast Regional Installer
Pros and Cons
Pros High-efficiency solar panels through SunPower System monitoring via smart devices and computer Two-month installation turnaround, per the company Cons Limited panel selection Phone number required for online quotes No solar battery options
Why We Chose Venture Solar

Venture Solar focuses on a smaller regional coverage area to provide a more personalized experience. As a SunPower dealer, the company offers high-efficiency solar panels with higher-than-average energy production. These all-black panels blend into most roof designs, providing a more inconspicuous rooftop installation. Additional protection includes critter guards to keep pests away from your system.

Venture completes its installation with in-house teams, leading to a quicker and cleaner process. The company uses drone footage for its roofing assessments for improved measurements. Venture Solar states its installations take one day to complete, with an average two-month timeframe from design to activation.

Warranty and Financing


Venture Solar includes a 25-year bumper-to-bumper warranty covering service, parts, and power output.

Financing Options

✔ Full purchase
✔ Loan
✔ Lease

Reputation and Awards

The company maintains an A+ rating with the BBB but is not accredited. Customers praised Venture Solar for its courteous and knowledgeable sales team, but some cited cases of numerous failed inspections due to project issues.

Learn more: Venture Solar review

(All BBB ratings are current as of June 2023.)

Solar Incentives in New Hampshire

Transitioning to clean energy requires a significant up-front investment. According to EcoWatch, installing a solar panel system in New Hampshire costs $19,000 on average. Federal, state, and local solar incentives can help to reduce solar energy system costs

The federal tax credit provides a tax credit equal to 30% of your installation costs and applies to rooftop solar panels, roofing, and stand-alone battery storage. New Hampshire homeowners also benefit from property tax exemption, which eliminates the added taxes that typically come with installing a solar system while allowing you to still benefit from increased home value.

The Residential Renewable Electrical Generation Rebate Program pays New Hampshire residents $200 per kilowatt (kW) of solar installed. You can earn up to $1,000 or 30% of your solar system costs, whichever is lower. We learned that these annual rebates have a small application window, so homeowners should be mindful of deadlines. For example, the 2022 application time frame lasted from Oct. 1–31. The 2023 application dates have not been announced as of this writing. 

Utility companies also offer additional solar credits and rebates. The New Hampshire Public Utilities Commission (PUC) mandates net-metering for most utility companies throughout the state. Customers earn utility bill credits for selling their excess energy to the power grid. However, payout rates and program guidelines vary among companies.

Eversource also offers its Eversource ConnectedSolutions Program, which allows customers to earn money by allowing the company to use their battery storage during peak hours. You can earn $230 per kilowatt-hour (kWh), up to a maximum of $3,000. However, you must install approved Generac, Enphase, or Sonen batteries to qualify.

We recommend visiting the Database of State Incentives for Renewables and Efficiency (DSIRE) for a complete list of local solar incentives.

What To Look For in a Solar Company

We recommend comparing the following factors to find the best solar company for your needs.

Solar Services

Many solar panel companies employ in-house or third-party installers. In-house teams work directly for the solar installer, so they have better quality control and smoother communication. Some companies assign a project manager during your solar panel system planning who will guide you from start to finish. Quality varies more widely amongst third-party installers, increasing the chances of a subpar installation. You’ll also have to contact another party regarding any issues, which could lead to communication breakdowns.  

Additional solar services to look for include system monitoring, energy audits, and roofing services. Some solar companies hold additional licenses to perform professional electrical and roofing repairs. Check each company for available services and note if they’re included with basic service or require additional monthly costs. 

Warranties and Power Production Guarantees

As with any big investment, you’ll want to ensure your solar system lasts through its life span. The average solar panels last 25 years or longer, so you’ll want warranty coverage at least this long. Most solar installation companies offer two warranty plans: manufacturer (or product) and workmanship. The product warranty protects against manufacturing defects, and the workmanship warranty covers installation failures. Many high-quality solar panels include protection for 25 years or longer. Look for long-term warranties that match your panels’ estimated life span for the best coverage. 

Some solar installers include a power production guarantee for added protection. These guarantees outline the panels’ estimated energy production and account for gradual panel degradation. According to the National Renewable Energy Laboratory (NREL), solar panels drop in efficiency by 0.5% annually. Quality panels have higher starting efficiencies than cheaper solar panels, resulting in less impactful degeneration. Companies include these warranties to protect their panels’ linear production and offer upgrades or replacements if they fall below predicted levels. These guarantees vary by company but typically last between two and 25 years. 

Payment Options

Most solar companies offer two or more solar system financing options. Cash payments and solar loans are the most common and offer the best benefits. Both payments qualify you as the legal system owner, a requirement for most solar incentives. Other payment options, such as solar leases and power purchase agreements (PPAs), allow customers to lease the system, keeping ownership with the solar provider. They offer limited benefits and disqualify you from added installation savings. Unless panel ownership is not your priority, we recommend choosing up-front payments or solar loans for the best financial benefits. 

Customer Support

Homeowners should check each company’s customer support team for availability and contact options. Some companies offer support 24/7, while others have limited office hours. You should also check the company’s methods of contact. Many installers provide phone and email access. Look for additional support features, such as online chat and in-app correspondence. When we tested several online chat features, we found mixed results. Some companies connected us to a live agent, while others used automated responses. 

We recommend checking each company’s third-party customer reviews, noting any mentions of poor customer support. This includes unanswered calls, delayed responses, and unfriendly agents.

How To Get a Solar Quote in New Hampshire

As you shop for your new solar power system, we recommend requesting multiple quotes from potential companies. Compare product catalogs, financing options, warranty coverage, and overall costs. Below is a step-by-step guide on the typical solar quotes process. 

  1. Reach out to each company: Most companies provide multiple points of contact, such as the phone or an online form. During our secret shipping experience, our calls were directed to a rep that verified our service area and solar eligibility. However, they provided little to no information on specific plans. We were transferred to a sales rep for further assistance. Check online forms for opt-in info regarding automated calls and text messages before agreeing. 
  2. Schedule your consultation: Companies typically offer virtual or in-person consultations. You can schedule in-person visits online or over the phone. Check any equipment and video call requirements before scheduling a virtual consultation. 
  3. Review your energy use: Solar installers build a system to meet your energy needs. To do this, they’ll review your latest electric bill to provide insight into your average usage. Some companies may request several months to account for seasonal fluctuations in energy use. We recommend having several statements available for your assessment. 
  4. Assess your roof design: The company rep will check your roof size and build your solar array based on the available space. They’ll account for structural designs, such as skylights and chimneys, and position panels to maximize available sunlight. If there’s any structural damage or you have surrounding trees casting shadows on the roof, the rep may recommend additional repairs or tree removal. 
  5. Build your solar system: Based on your roof and energy use assessments, the company will design an optimal home system. Depending on their available products, you’ll choose from solar panel types, inverters, and add-on options, such as solar batteries and electric vehicle (EV) chargers. 
  6. Review your final system and contract: Your quote will include all final costs, equipment, warranty coverage, and financing options. When we spoke to solar experts, they advised that solar quotes should have an itemized list of all pricing, including labor. Your quote should also include your estimated solar payback period—the time frame when your solar system pays for itself. Some companies also assist you with finding and applying for solar incentives to lower your initial costs.
Find Solar Companies in Top New Hampshire Cities

Our Conclusion

We recommend SunPower as the best solar installer for New Hampshire residents. The company uses high-efficiency panels and in-house components to enhance system performance. Although SunPower costs more than other solar providers, you’ll be investing in a high-quality system designed for excellent performance with 25 years of protection. 

We recommend getting  quotes from at least three providers to compare pricing and offerings before deciding.

Other New Hampshire Home Service Resources

FAQ About Solar Companies in New Hampshire

Is solar worth it in New Hampshire?

Yes, solar is a worthwhile investment in New Hampshire due to the state’s higher-than-average electricity rates. Not only will residents save more on energy costs, but they’ll also reduce their carbon footprint, contributing to New Hampshire’s renewable energy goals. 

Do solar panels increase property taxes in New Hampshire?

No, solar panels don’t increase property tax in New Hampshire, thanks to the state’s Property Tax Exemption for Renewable Energy law. Homeowners benefit from the added property value gained from installing a solar system but won’t incur additional taxation. 

How much do solar panels cost in NH?

EcoWatch estimates that the average solar panel cost in New Hampshire is around $19,000. This price varies based on system size, energy needs, and solar company pricing. Homeowners can use federal and state solar incentives to lower their investment costs, making solar conversion more economical. 

Does solar power make sense in New Hampshire?

Yes, solar panels work well in New Hampshire since the state has around 198 sunny days annually. Although this falls below the national average of 205, homeowners still have plenty of sunlight to benefit from a solar system. They can also invest in a solar battery, such as the Tesla Powerwall, for backup energy on cloudy days.

Our Rating Methodology

The This Old House Reviews Team is committed to providing comprehensive and unbiased reviews to our readers. After over a thousand hours of research on solar companies, interviews with experts, and common customer needs, we’ve created a detailed rating system for solar providers based on six factors:

  • Solar equipment, installation, and services (25%)
  • Warranty and performance guarantees (25%)
  • Brand reputation and certifications (15%)
  • Financing options (15%)
  • Experience (10%)
  • Availability (10%)

Total scores are divided by 20 for a final 5-point rating scale.

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