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Find Solar panel installers in Derry

Avatar for Harmony Energy Works, Inc.

Harmony Energy Works, Inc.

4.50(
6
)
Approved Pro

Harmony Energy Works, Inc.

4.50(
6
)
Approved Pro
Customers say: Quick response
17 years of experience
Free onsite estimate

Welcome to Harmony Energy Works Incorporated. We do solar work better than anybody else in all of New Hampshire with premium solar products and professional best practices workmanship. Our commitment to your long term investment means that we use only American-manufactured solar panels and best-of-class for all other balance of system components. This means that you will feel confident that your warranties will be backed up the entire time you own your system. We design, install, and maintain every solar array we sell and have been doing that for over 15 years. We handle all the design, utility interconnection agreements, state rebates, and other grants, making the process as easy and seamless as possible for you. For commercial, residential, or government and municipal solar projects Harmony Energy Works should be your first and last call for solar in New Hampshire, Massachusetts, and Maine. Please contact us today.

"If you need a repair or want to have your panels removed for a roofing project, expect to be calling multiple times a day just to get someone to show up. The lack of communication was matched only by the bad-faith representations. When I needed my solar panels removed for a roofing project, trying to get them to commit to a date for the removal and reinstallation turned a 1 week project into a slog lasting 2 months just because they could not commit to a date without me calling incessantly to ask when they were showing up to finish their work. I was hoping this was was not representative of their company culture and business ethic and gave them another chance when I experienced a failure with my inverter. After reporting a problem with my array I was told repeatedly that they would have someone out there quote, this week, to look at it for weeks. Then they finally told me they already had the replacement part on hand, told me it would be fixed that Thursday and then ghosted me for a few more weeks telling me they needed to RMA the part. When the new part was finally installed, it was not configured to adequately serve my system and my battery backup was suddenly useless. Instead of showing any interest in correcting the issue, they just blamed the batteries, shifted the responsibility for fixing their mistake back to me and disappeared. These folks were pleasant to talk to and laid on the apologies, but the action to make things right did not follow. I cannot recommend them unless you want to waste your time hounding someone just to get a response."

Christie T on August 2022

Welcome to Harmony Energy Works Incorporated. We do solar work better than anybody else in all of New Hampshire with premium solar products and professional best practices workmanship. Our commitment to your long term investment means that we use only American-manufactured solar panels and best-of-class for all other balance of system components. This means that you will feel confident that your warranties will be backed up the entire time you own your system. We design, install, and maintain every solar array we sell and have been doing that for over 15 years. We handle all the design, utility interconnection agreements, state rebates, and other grants, making the process as easy and seamless as possible for you. For commercial, residential, or government and municipal solar projects Harmony Energy Works should be your first and last call for solar in New Hampshire, Massachusetts, and Maine. Please contact us today.

"If you need a repair or want to have your panels removed for a roofing project, expect to be calling multiple times a day just to get someone to show up. The lack of communication was matched only by the bad-faith representations. When I needed my solar panels removed for a roofing project, trying to get them to commit to a date for the removal and reinstallation turned a 1 week project into a slog lasting 2 months just because they could not commit to a date without me calling incessantly to ask when they were showing up to finish their work. I was hoping this was was not representative of their company culture and business ethic and gave them another chance when I experienced a failure with my inverter. After reporting a problem with my array I was told repeatedly that they would have someone out there quote, this week, to look at it for weeks. Then they finally told me they already had the replacement part on hand, told me it would be fixed that Thursday and then ghosted me for a few more weeks telling me they needed to RMA the part. When the new part was finally installed, it was not configured to adequately serve my system and my battery backup was suddenly useless. Instead of showing any interest in correcting the issue, they just blamed the batteries, shifted the responsibility for fixing their mistake back to me and disappeared. These folks were pleasant to talk to and laid on the apologies, but the action to make things right did not follow. I cannot recommend them unless you want to waste your time hounding someone just to get a response."

Christie T on August 2022


Avatar for Sunup Solar LLC

Sunup Solar LLC

5.00(
5
)
Approved Pro

Sunup Solar LLC

5.00(
5
)
Approved Pro
5 years of experience
Free onsite estimate

Transitioning to solar energy might seem like a daunting task, but with Sunup Solar, we've got you covered from start to finish. Our in-house team handles every step of the process, ensuring a smooth experience when setting up rooftop or ground-mounted solar panels.

Transitioning to solar energy might seem like a daunting task, but with Sunup Solar, we've got you covered from start to finish. Our in-house team handles every step of the process, ensuring a smooth experience when setting up rooftop or ground-mounted solar panels.


Avatar for SUNFLOWER LLC

SUNFLOWER LLC

4.93(
15
)
Approved Pro

SUNFLOWER LLC

4.93(
15
)
Approved Pro
Customers say: Quality work
7 years of experience
Free onsite estimate

SunFlower was founded by Vincenzo and Connor—two energy professionals driven by a shared mission to create a cleaner, more sustainable future. What began as a commitment to reducing carbon footprints has grown into a full-service solar company focused on empowering homeowners and businesses with smart, affordable energy solutions. We deliver high-quality solar installations designed to lower electricity costs, boost energy independence, and make clean energy accessible to all. With expert craftsmanship and personalized service, we help our customers harness the power of the sun for long-term savings and real environmental impact. At SunFlower, we don’t just install solar panels—we help you take control of your energy future.

"Great company"

David C on November 2024

SunFlower was founded by Vincenzo and Connor—two energy professionals driven by a shared mission to create a cleaner, more sustainable future. What began as a commitment to reducing carbon footprints has grown into a full-service solar company focused on empowering homeowners and businesses with smart, affordable energy solutions. We deliver high-quality solar installations designed to lower electricity costs, boost energy independence, and make clean energy accessible to all. With expert craftsmanship and personalized service, we help our customers harness the power of the sun for long-term savings and real environmental impact. At SunFlower, we don’t just install solar panels—we help you take control of your energy future.

"Great company"

David C on November 2024


Avatar for Green Sun Energy LLC

Green Sun Energy LLC

4.89(
9
)
Approved Pro

Green Sun Energy LLC

4.89(
9
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
16 local quotes requested

We are a solar company operating in New Hampshire, Massachusetts, Vermont, and Maine. We are company that formed in 2022, but have been in the solar industry installing and servicing systems since 2008. We are here to fill the need in servicing solar systems that no longer have solar servicing providers along with providing new customers with new installs. We are a solar company you can trust with an unmatched knowledge in newer and older solar systems. We operate in residential and commercial.

"Green Sun Energy did a fantastic job cleaning my solar panels. They were prompt, courteous, and professional. I highly recommend them!"

Bruce H on July 2025

We are a solar company operating in New Hampshire, Massachusetts, Vermont, and Maine. We are company that formed in 2022, but have been in the solar industry installing and servicing systems since 2008. We are here to fill the need in servicing solar systems that no longer have solar servicing providers along with providing new customers with new installs. We are a solar company you can trust with an unmatched knowledge in newer and older solar systems. We operate in residential and commercial.

"Green Sun Energy did a fantastic job cleaning my solar panels. They were prompt, courteous, and professional. I highly recommend them!"

Bruce H on July 2025


Avatar for Merrimack Valley Plumbing & Home Services

Merrimack Valley Plumbing & Home Services

3.50(
4
)

Merrimack Valley Plumbing & Home Services

3.50(
4
)
8 years of experience

Merrimack Valley Plumbing, LLC is a locally-owned and operated company committed to providing fast, affordable, and high-quality Plumbing. We offer HVAC repair, installation, and replacement services. We specialize in heating controls and simplifying complicated plumbing and HVAC systems to make them user-friendly. We strive to find solutions that fit everyone’s comfort needs, from construction projects to air conditioner replacement.

"I hired Merrimack Valley Plumbing to install a boiler in my home, and my experience was overwhelmingly disappointing. While the boiler functions, the installation process and quality of work raised numerous red flags. I want to share my experience to help others make an informed decision when considering this company. Installation Issues Code Violations: The exhaust is less than 3 feet from the gas meter, and the holes drilled in the joists for intake and exhaust are less than 2 inches from the bottom, both of which do not meet code requirements. Improper Venting: Both the exhaust and intake vents are installed too close to the ground (not meeting the 12-inch clearance required for expected snowfall) and are too close to each other (less than the 12-inch separation required). Unsealed Penetration: The hole drilled in the siding was left unsealed, creating a potential entry point for rodents. Condensate Drain Issues: The installed condensate pump is leaking and wasn’t tested. Additionally, rather than a permanent drain installation, they daisy-chained it into a pump for a portable air conditioner. Wiring Errors: The zones for the primary bedroom and second floor were wired backward, causing overheating in both areas. Missing Outdoor Sensor: The outdoor temperature sensor, critical for proper operation, was not installed. No CO Alarm: A carbon monoxide alarm was not installed, which is essential for safety. Unprofessional Workmanship: Trash, including a metal duct pipe, was left in the crawl space near live electrical wires. Process Concerns Permit Delays: The company failed to file permits before starting work. I only discovered this after contacting the town permitting office myself. Mismanagement and Delays: The project stretched far beyond the promised timeline, with repeated excuses about missing parts and limited crew availability, despite prior assurances that the job would be completed in two days. Broken Promises: They claimed a project manager would take measurements in advance to ensure a smooth installation, but no one came. Additionally, they rescheduled initially, promising a larger crew, only to send a single plumber on the first day. Misinformation and Deception Throughout the project, I encountered multiple instances where Merrimack Valley Plumbing provided misleading or false information: - They lied about the dates permits were filed. - They claimed delivery issues caused delays, though they should have anticipated these based on the advance photos provided. - They repeatedly shifted blame rather than taking accountability for the delays and issues. Overall Experience While the boiler itself works, the installation was riddled with code violations, safety oversights, and poor workmanship. Additionally, the company’s lack of transparency and repeated dishonesty made an already frustrating situation worse. I would not recommend Merrimack Valley Plumbing to others. Their lack of professionalism, disregard for safety codes, and failure to take responsibility for their mistakes created an unnecessarily stressful and costly experience."

Paul S on March 2025

Merrimack Valley Plumbing, LLC is a locally-owned and operated company committed to providing fast, affordable, and high-quality Plumbing. We offer HVAC repair, installation, and replacement services. We specialize in heating controls and simplifying complicated plumbing and HVAC systems to make them user-friendly. We strive to find solutions that fit everyone’s comfort needs, from construction projects to air conditioner replacement.

"I hired Merrimack Valley Plumbing to install a boiler in my home, and my experience was overwhelmingly disappointing. While the boiler functions, the installation process and quality of work raised numerous red flags. I want to share my experience to help others make an informed decision when considering this company. Installation Issues Code Violations: The exhaust is less than 3 feet from the gas meter, and the holes drilled in the joists for intake and exhaust are less than 2 inches from the bottom, both of which do not meet code requirements. Improper Venting: Both the exhaust and intake vents are installed too close to the ground (not meeting the 12-inch clearance required for expected snowfall) and are too close to each other (less than the 12-inch separation required). Unsealed Penetration: The hole drilled in the siding was left unsealed, creating a potential entry point for rodents. Condensate Drain Issues: The installed condensate pump is leaking and wasn’t tested. Additionally, rather than a permanent drain installation, they daisy-chained it into a pump for a portable air conditioner. Wiring Errors: The zones for the primary bedroom and second floor were wired backward, causing overheating in both areas. Missing Outdoor Sensor: The outdoor temperature sensor, critical for proper operation, was not installed. No CO Alarm: A carbon monoxide alarm was not installed, which is essential for safety. Unprofessional Workmanship: Trash, including a metal duct pipe, was left in the crawl space near live electrical wires. Process Concerns Permit Delays: The company failed to file permits before starting work. I only discovered this after contacting the town permitting office myself. Mismanagement and Delays: The project stretched far beyond the promised timeline, with repeated excuses about missing parts and limited crew availability, despite prior assurances that the job would be completed in two days. Broken Promises: They claimed a project manager would take measurements in advance to ensure a smooth installation, but no one came. Additionally, they rescheduled initially, promising a larger crew, only to send a single plumber on the first day. Misinformation and Deception Throughout the project, I encountered multiple instances where Merrimack Valley Plumbing provided misleading or false information: - They lied about the dates permits were filed. - They claimed delivery issues caused delays, though they should have anticipated these based on the advance photos provided. - They repeatedly shifted blame rather than taking accountability for the delays and issues. Overall Experience While the boiler itself works, the installation was riddled with code violations, safety oversights, and poor workmanship. Additionally, the company’s lack of transparency and repeated dishonesty made an already frustrating situation worse. I would not recommend Merrimack Valley Plumbing to others. Their lack of professionalism, disregard for safety codes, and failure to take responsibility for their mistakes created an unnecessarily stressful and costly experience."

Paul S on March 2025


BRIDGES ELECTRIC INC

4.67(
3
)

BRIDGES ELECTRIC INC

4.67(
3
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Family owned electrical business servicing Maine, New Hampshire and Massachusetts. Fully licensed and insured.

Family owned electrical business servicing Maine, New Hampshire and Massachusetts. Fully licensed and insured.


Joppa Remodeling LLC

No reviews yet

Joppa Remodeling LLC

No reviews yet
12 years of experience

We are a full service remodeling company. All of our trades are licensed and insured

We are a full service remodeling company. All of our trades are licensed and insured


Paradis Plumbing and Heating

No reviews yet

Paradis Plumbing and Heating

No reviews yet

Avatar for Provencher Plumbing & Heating

Provencher Plumbing & Heating

5.00(
2
)

Provencher Plumbing & Heating

5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Provencher Plumbing & Heating is the premier plumbing company for all things service and new construction plumbing and heating. We are a small family owned company that has been around for 25+ years!

"Brian Provencher and son were prompt, courteous, efficient, and reasonably priced. I had a pipe burst on a Sunday night that required me to shut off water to the house. I put in a call to Provencher Plumbing & Heating Monday morning. They had a job scheduled for that day but took the time to come to my home to assess the problem, and then were willing to reschedule a less urgent job they had the next day so as to come fix my pipe first thing in the morning. They arrived early as promised and worked efficiently to get things fixed, a job which required cutting access openings in the walls and tracing a leak from the basement to the second floor. They were careful to do minimum cutting and in the least obtrusive locations, showed me the problem segment of pipe, and were good to explain everything to me as they went along. Both father's and son's manners were courteous and professional. I have already recommended them to a neighbor."

Sandra G on April 2024

Provencher Plumbing & Heating is the premier plumbing company for all things service and new construction plumbing and heating. We are a small family owned company that has been around for 25+ years!

"Brian Provencher and son were prompt, courteous, efficient, and reasonably priced. I had a pipe burst on a Sunday night that required me to shut off water to the house. I put in a call to Provencher Plumbing & Heating Monday morning. They had a job scheduled for that day but took the time to come to my home to assess the problem, and then were willing to reschedule a less urgent job they had the next day so as to come fix my pipe first thing in the morning. They arrived early as promised and worked efficiently to get things fixed, a job which required cutting access openings in the walls and tracing a leak from the basement to the second floor. They were careful to do minimum cutting and in the least obtrusive locations, showed me the problem segment of pipe, and were good to explain everything to me as they went along. Both father's and son's manners were courteous and professional. I have already recommended them to a neighbor."

Sandra G on April 2024


Sunniva Energy LLC

No reviews yet

Sunniva Energy LLC

No reviews yet
2 years of experience

"We are a dedicated group of solar industry experts collaborating with leaders in the field, united by a mission to inform and educate homeowners about the benefits of solar energy. Informed homeowners are crucial in adopting solar solutions. Through our partnerships, we provide unparalleled value with top-quality materials, excellent workmanship, and competitive prices. Our utmost priority is delivering exceptional customer service, workmanship, and overall value, resulting in a highly satisfied client base."

"We are a dedicated group of solar industry experts collaborating with leaders in the field, united by a mission to inform and educate homeowners about the benefits of solar energy. Informed homeowners are crucial in adopting solar solutions. Through our partnerships, we provide unparalleled value with top-quality materials, excellent workmanship, and competitive prices. Our utmost priority is delivering exceptional customer service, workmanship, and overall value, resulting in a highly satisfied client base."

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FAQs for solar panel installation projects in Derry, NH

Annual inspections are recommended for residential solar systems, though specific needs vary based on several factors. Newer installations in moderate climates require less frequent professional evaluation, while systems over a decade old or those in harsh environments benefit from more regular attention. Always arrange an inspection following severe weather events that might have damaged components or affected system performance.

Pre-inspection cleaning isn't necessary, as evaluating the current condition of your panels is part of the assessment process. Professional inspectors can effectively examine systems regardless of cleanliness level, as accumulation patterns often provide valuable diagnostic information. However, if panels are completely obscured by heavy debris, bird droppings, or other materials that prevent visual examination of the surface, a basic rinse might be helpful before the scheduled inspection.

A comprehensive solar inspection examines all system components, including panels, wiring, mounting hardware, and inverters. Technicians check for physical damage like cracks or delamination, evaluate electrical connections for corrosion or looseness, and assess overall system performance against expected output levels. The inspection may also verify that safety systems are functioning correctly and that the installation complies with applicable codes and standards.

While traditional manual inspections are effective for most residential systems, specialized inspection methods may provide advantages for certain installations. Factors to consider include system size, roof complexity, accessibility challenges, and safety considerations. For multi-story homes or commercial installations where roof access is difficult or potentially hazardous, alternative inspection approaches offer improved documentation and reduced risk, though potentially at a higher cost.

The Derry, NH homeowners’ guide to solar panel installations

From average costs to expert advice, get all the answers you need to get your job done.