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  • Verified reviews icon27
    Verified generator installs reviews

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Granite State Solar creates resilient energy systems for homes and businesses throughout New Hampshire. We meet your energy needs with custom generator, battery backup and solar panel installations.


Avatar for Heritage Home Service

Heritage Home Service

28 Commercial Ct
4.04(
454
)
Approved Pro

Heritage Home Service

28 Commercial Ct
4.04(
454
)
Approved Pro
Customers say: Super punctual
39 years of experience
Free onsite estimate

We’re Your Local Plumbers, Heating and AC Technicians, and Electricians. Get prompt and professional plumbing, heating, air conditioning, and electrical services. Our quality staff of licensed and local plumbers and electricians have been providing local plumbing, heating, air conditioning, and electric services in the New Hampshire area since our beginnings in 1986. At our heart, Heritage is a family company with a longstanding reputation for providing quality service for a fair price. People tell us that they see our service trucks everywhere in the area, which is true since there’s a good chance that one of our technicians is also your neighbor. This makes it easy for us to be at your home promptly to help you solve your household plumbing, heating, AC, and electrical problems. It also makes it easy for us to do all that we can to maintain our reputation for quality service. One way we continue to improve the quality of our work is through regular training and certification for our great attendants who are behind the scenes making the magic happen. So whether you are struggling with a clogged drain or a noisy furnace, or you need an installation of an appliance, you’ll see the results of our devotion in the service you receive. If you’re experiencing a problem with your plumbing, heating, AC, or electricity at home, then you should give us a call and see what we mean by quality service that’s guaranteed. From clogged drains to AC installation to electrician’s work, we offer a variety of quality services and products at fair prices to NH residents and northern MA residents—guaranteed!

"Excellent experience, technician arrived on time. Friendly, efficient, kept me up to date on the plan. Leak was diagnosed and toilet replaced in no time!"

Elizabeth S on July 2025

We’re Your Local Plumbers, Heating and AC Technicians, and Electricians. Get prompt and professional plumbing, heating, air conditioning, and electrical services. Our quality staff of licensed and local plumbers and electricians have been providing local plumbing, heating, air conditioning, and electric services in the New Hampshire area since our beginnings in 1986. At our heart, Heritage is a family company with a longstanding reputation for providing quality service for a fair price. People tell us that they see our service trucks everywhere in the area, which is true since there’s a good chance that one of our technicians is also your neighbor. This makes it easy for us to be at your home promptly to help you solve your household plumbing, heating, AC, and electrical problems. It also makes it easy for us to do all that we can to maintain our reputation for quality service. One way we continue to improve the quality of our work is through regular training and certification for our great attendants who are behind the scenes making the magic happen. So whether you are struggling with a clogged drain or a noisy furnace, or you need an installation of an appliance, you’ll see the results of our devotion in the service you receive. If you’re experiencing a problem with your plumbing, heating, AC, or electricity at home, then you should give us a call and see what we mean by quality service that’s guaranteed. From clogged drains to AC installation to electrician’s work, we offer a variety of quality services and products at fair prices to NH residents and northern MA residents—guaranteed!

"Excellent experience, technician arrived on time. Friendly, efficient, kept me up to date on the plan. Leak was diagnosed and toilet replaced in no time!"

Elizabeth S on July 2025


Avatar for Generator Supercenter of New Hampshire

Generator Supercenter of New Hampshire

28 Portsmouth Ave
5.00(
10
)
Approved Pro

Generator Supercenter of New Hampshire

28 Portsmouth Ave
5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 years of experience

At Generator Supercenter, we are committed to securing your home and peace of mind with back up power solutions. When bad weather hits or an electrical circuit malfunctions, a power outage is likely. When that happens, you can recover quickly if you own a reliable home backup generator. Once your generator is installed, you’ll need reliable technicians available 24/7 and capable of providing quick services. Generator Supercenter of New Hampshire provides experienced technicians for generator installation, repair, and maintenance. Benefits of working with our team: Full-service – Whether you need a new generator, or your current one is malfunctioning, we won’t leave until your generator is up and running as it should be. Convenience – If something goes wrong with your generator, you don’t have to worry about going out to buy a new one or to replace parts. We will come to your home or business and take care of it for you. Free on-site estimate – When you call us, you’re not committed to a service—our estimates are free, so you can meet with a member of our team to learn about your options with no strings attached! Unfortunately we do not do anything with portable generators or any brands not manufactured by Generac. We are also not a parts distributor.

"Matt Sanford and the team at Generator Supercenter were professional, knowledgeable and efficient when surveying my property. They spent quality time educating me on their generator product line and monitoring services. If you're looking for a superior product, company, and team to support you throughout our long New England winters, look no further!"

Chad F on March 2022

At Generator Supercenter, we are committed to securing your home and peace of mind with back up power solutions. When bad weather hits or an electrical circuit malfunctions, a power outage is likely. When that happens, you can recover quickly if you own a reliable home backup generator. Once your generator is installed, you’ll need reliable technicians available 24/7 and capable of providing quick services. Generator Supercenter of New Hampshire provides experienced technicians for generator installation, repair, and maintenance. Benefits of working with our team: Full-service – Whether you need a new generator, or your current one is malfunctioning, we won’t leave until your generator is up and running as it should be. Convenience – If something goes wrong with your generator, you don’t have to worry about going out to buy a new one or to replace parts. We will come to your home or business and take care of it for you. Free on-site estimate – When you call us, you’re not committed to a service—our estimates are free, so you can meet with a member of our team to learn about your options with no strings attached! Unfortunately we do not do anything with portable generators or any brands not manufactured by Generac. We are also not a parts distributor.

"Matt Sanford and the team at Generator Supercenter were professional, knowledgeable and efficient when surveying my property. They spent quality time educating me on their generator product line and monitoring services. If you're looking for a superior product, company, and team to support you throughout our long New England winters, look no further!"

Chad F on March 2022


Avatar for Direct Electric, LLC

Direct Electric, LLC

2131 Dover Rd
5.00(
2
)
Approved Pro

Direct Electric, LLC

2131 Dover Rd
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

Direct Electric LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"He did an amazing job, everything was really good, everything was on time, pricing was good and I would use them over and over again."

Tyler R on April 2023

Direct Electric LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"He did an amazing job, everything was really good, everything was on time, pricing was good and I would use them over and over again."

Tyler R on April 2023



Avatar for Generator Supercenter of New Hampshire

Generator Supercenter of New Hampshire

28 Portsmouth Ave
4.93(
30
)
Approved Pro

Generator Supercenter of New Hampshire

28 Portsmouth Ave
4.93(
30
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
83 local quotes requested

Generator Supercenter of New Hampshire is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. As a father and son-owned business, we’re committed to the best service. When you call us, our estimates are free, so you can meet with a member of our team to learn about your options with no strings attached!

"They were on time and very efficient, complete install done in one day. Many excellent additional features we took advantage of, such as surge suppressor and monitoring. Honest and dependable company to work with. Would recommend them without hesitation."

Brad M on February 2021

Generator Supercenter of New Hampshire is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. As a father and son-owned business, we’re committed to the best service. When you call us, our estimates are free, so you can meet with a member of our team to learn about your options with no strings attached!

"They were on time and very efficient, complete install done in one day. Many excellent additional features we took advantage of, such as surge suppressor and monitoring. Honest and dependable company to work with. Would recommend them without hesitation."

Brad M on February 2021


Avatar for Ourea Solutions

Ourea Solutions

40 Maple St #6
4.88(
8
)
Approved Pro

Ourea Solutions

40 Maple St #6
4.88(
8
)
Approved Pro
Super Service Award
Customers say: Quick response
12 local quotes requested
21 years of experience

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"Chris was flexible and worked with my on what type of mount was needed for a large and smaller TV. When he realized neither of us had the size mount needed to properly support the big TV, he went out and got what was required. He was professional, polite and got the job done for a reasonable rate."

Sue L on March 2025

We're a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. Our services are customized to the individual project, paying close attention to the details of each project that we're involved with. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guaranteeing your satisfaction!

"Chris was flexible and worked with my on what type of mount was needed for a large and smaller TV. When he realized neither of us had the size mount needed to properly support the big TV, he went out and got what was required. He was professional, polite and got the job done for a reasonable rate."

Sue L on March 2025


Avatar for Granite State Solar

Granite State Solar

57 RYAN RD
5.00(
1
)
Approved Pro

Granite State Solar

57 RYAN RD
5.00(
1
)
Approved Pro
46 local quotes requested
25 years of experience

Granite State Solar has served the energy needs of Granite Staters for over 17 years. We specialize in generator installs and solar panel installs as well as a wide range of electrical projects that include electrical vehicle charging stations and panel upgrades. We take pride in our quality of work and our commitment to outstanding results. We are committed to providing a personalized service for each individual project we take on. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction with our industry-leading warranty on generators.

Granite State Solar has served the energy needs of Granite Staters for over 17 years. We specialize in generator installs and solar panel installs as well as a wide range of electrical projects that include electrical vehicle charging stations and panel upgrades. We take pride in our quality of work and our commitment to outstanding results. We are committed to providing a personalized service for each individual project we take on. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction with our industry-leading warranty on generators.


Avatar for LaPlante Electric, Inc.

LaPlante Electric, Inc.

717 US-1
4.89(
60
)
Approved Pro

LaPlante Electric, Inc.

717 US-1
4.89(
60
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
68 local quotes requested

LaPlante Electric, Inc., is "The Best of Home Advisor 2020" please check out the Reviews by our Super Wonderful Clients!!! Love our clients!!! LaPlante Electric is proud to be a locally owned and family operated business that serves the Maine/New Hampshire communities. Since 1991 we have provided our customers with the highest quality products and expertise at a fair price. Since opening our doors we have built our business on being timely, tidy and making sure that every customer is 100% satisfied when the job is done. We provide our customers with on site assessments and quotes, provide financing and payment options and offer flexible installation scheduling. Our customers know that they can call 24/7 and the phone will be answered by a live person, that they will get a firm price, not an estimate and that we will show up on time when scheduled. Let us show you why our customers become customers for life, get in touch today!

"While the service was completed in a timely manner, the cost of installation and services was not near the original estimate. In addition, it appears that the installer took advantage of my wife's naivete and sold her additional products that were not necessary. While she is an adult and capable of making decisions, her lack of knowledge about electrical matters led her to purchase electrical outlets for 3 bathrooms costing a total of $225 that were not needed. In addition, the price for a simple bath fan was extremely high ($250) and had we known in advance the price would have been that high, we would have purchased our own fan at a significant savings from Home Depot or Lowe's (the same model sells at those stores for approximately $75)."

Chris M on July 2007

LaPlante Electric, Inc., is "The Best of Home Advisor 2020" please check out the Reviews by our Super Wonderful Clients!!! Love our clients!!! LaPlante Electric is proud to be a locally owned and family operated business that serves the Maine/New Hampshire communities. Since 1991 we have provided our customers with the highest quality products and expertise at a fair price. Since opening our doors we have built our business on being timely, tidy and making sure that every customer is 100% satisfied when the job is done. We provide our customers with on site assessments and quotes, provide financing and payment options and offer flexible installation scheduling. Our customers know that they can call 24/7 and the phone will be answered by a live person, that they will get a firm price, not an estimate and that we will show up on time when scheduled. Let us show you why our customers become customers for life, get in touch today!

"While the service was completed in a timely manner, the cost of installation and services was not near the original estimate. In addition, it appears that the installer took advantage of my wife's naivete and sold her additional products that were not necessary. While she is an adult and capable of making decisions, her lack of knowledge about electrical matters led her to purchase electrical outlets for 3 bathrooms costing a total of $225 that were not needed. In addition, the price for a simple bath fan was extremely high ($250) and had we known in advance the price would have been that high, we would have purchased our own fan at a significant savings from Home Depot or Lowe's (the same model sells at those stores for approximately $75)."

Chris M on July 2007


Avatar for Digital City Technology, Inc.

Digital City Technology, Inc.

68 Mountain Gate Road
5.00(
5
)
Approved Pro

Digital City Technology, Inc.

68 Mountain Gate Road
5.00(
5
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
13 years of experience

Digital City Technology, Inc. (Digital City) is based in Ashland, MA, supporting greater Boston and New England since 2008. We are a Telecommunications, Network, Low Voltage and Fiber Optic professional service provider. Digital City installs VOIP Phone systems, LAN/WAN, IP Surveillance and Audio/Visual Systems. We specialize in Phone/Internet cutovers, Data Center installations, Network and System design, CAT 5 & 6 and Fiber Optic cabling, Structured Cabling and Wireless Internet implementation. Digital City has participated in Technology Roll-outs for Fortune 500 companies and performed Technology, Network and Wi-Fi deployments, VOIP installs etc. Our main goal is to provide cost-justifiable, top quality IT services designed to meet business, customer and user demands.

"Low voltage work was clean and labeled!"

Shane H on February 2020

Digital City Technology, Inc. (Digital City) is based in Ashland, MA, supporting greater Boston and New England since 2008. We are a Telecommunications, Network, Low Voltage and Fiber Optic professional service provider. Digital City installs VOIP Phone systems, LAN/WAN, IP Surveillance and Audio/Visual Systems. We specialize in Phone/Internet cutovers, Data Center installations, Network and System design, CAT 5 & 6 and Fiber Optic cabling, Structured Cabling and Wireless Internet implementation. Digital City has participated in Technology Roll-outs for Fortune 500 companies and performed Technology, Network and Wi-Fi deployments, VOIP installs etc. Our main goal is to provide cost-justifiable, top quality IT services designed to meet business, customer and user demands.

"Low voltage work was clean and labeled!"

Shane H on February 2020

Showing 1-10 of 44
Generator Install questions, answered by experts

As long as your generator is used as recommended by the manufacturer, it’s safe to use for auxiliary power. Make sure that fuel powered generators are used outdoors and that the fumes dissipate away from your home. A professional generator installer will ensure your generator’s placement and set-up meets safety standards when installing or repairing your back-up power source.

DIY is possible for basic setups. Professional installation ensures safe and proper electrical connections.

When properly maintained, natural gas generators can last a long time, as much as 20 to 40 years. They have relatively few needs compared to generators with other fuel types. However, the generator’s lifespan ultimately depends on how often the generator is used and for how long it’s left running.

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

The Alton Bay, NH homeowners’ guide to generator installs

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

What do you need done? We’ll find top pros.
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