Get matched with top generator installers in Port Jefferson, NY
There are 3 highly-rated local generator installers.
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22 Verified Reviews for Generator Installation pros in Port Jefferson, NY
*The Angi rating for Generator Installation companies in Port Jefferson, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Installation needs.
*The HomeAdvisor rating for Generator Installation companies in Port Jefferson, NY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Installation needs.
Last update on April 25, 2025
Generator installers in Port Jefferson
We specialize in electrical services, repairs, installs, lighting, panel upgrades, ceiling fans, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!
"Excellent!"
Patricia G on January 2024
We specialize in electrical services, repairs, installs, lighting, panel upgrades, ceiling fans, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!
"Excellent!"
Patricia G on January 2024
With over 20 years of electrical experience, we are here to help you with all your electrical needs. Licensed and insured, we can tackle anything from smart home networking and landscape lighting to service upgrades and Generators
"Perfect! Anthony called immediately set up the appointment and completed in a day. He was very professional and patiently listened to my requests, made solid suggestions and completed it quickly. Highly Recommend! Will definitely call again for my electrical projects, thanks!"
Clyde F on April 2025
With over 20 years of electrical experience, we are here to help you with all your electrical needs. Licensed and insured, we can tackle anything from smart home networking and landscape lighting to service upgrades and Generators
"Perfect! Anthony called immediately set up the appointment and completed in a day. He was very professional and patiently listened to my requests, made solid suggestions and completed it quickly. Highly Recommend! Will definitely call again for my electrical projects, thanks!"
Clyde F on April 2025
5-Star Excellence at TFC Electric Inc. We pride ourselves on achieving a 5-STAR rating on GOOGLE because customer satisfaction is more than just a goal – it's a core commitment. We invite you to explore our reviews and discover what our esteemed customers have to say about their experiences. Services include: New Construction: Bring your vision to life with our expert electrical wiring and installation services for new constructions. • Electrical Repairs • Electrical Inspections • Generator Installation • Electrical Service Panel Upgrades: Upgrade your electrical system for increased safety and efficiency. 100Amp, 200Amp panel upgrades • Meter installations or replacements • Landscape and Outdoor Lighting • Troubleshooting Power Outages: We identify and address electrical issues promptly to restore power to your home. • Pool/Hot Tub Connections • Circuit Breakers: Installation, repair, and maintenance • Electrical Wiring and Repairs • Lighting indoor/outdoor • Appliance connections • Undercounter lighting: • EV charge stations: Contact TFC Electric Inc. for Free estimates at 631-589-2800
"Great product install"
Andy S on July 2024
5-Star Excellence at TFC Electric Inc. We pride ourselves on achieving a 5-STAR rating on GOOGLE because customer satisfaction is more than just a goal – it's a core commitment. We invite you to explore our reviews and discover what our esteemed customers have to say about their experiences. Services include: New Construction: Bring your vision to life with our expert electrical wiring and installation services for new constructions. • Electrical Repairs • Electrical Inspections • Generator Installation • Electrical Service Panel Upgrades: Upgrade your electrical system for increased safety and efficiency. 100Amp, 200Amp panel upgrades • Meter installations or replacements • Landscape and Outdoor Lighting • Troubleshooting Power Outages: We identify and address electrical issues promptly to restore power to your home. • Pool/Hot Tub Connections • Circuit Breakers: Installation, repair, and maintenance • Electrical Wiring and Repairs • Lighting indoor/outdoor • Appliance connections • Undercounter lighting: • EV charge stations: Contact TFC Electric Inc. for Free estimates at 631-589-2800
"Great product install"
Andy S on July 2024
At Dependable Electrical, we offer a wide range of services for all residential homes and commercial businesses. Specializing in service changes and upgrades, panel swaps and upgrades, Electrical Vehicle charging stations and more. Safety and efficiency are our standards. Dependable Electrical is Licensed and Insured, operating throughout the Suffolk County area.
"Went great 👍. Steve, Mark and Samory were all very professional. Thanks for handling all our electrical issues. A special shout out to Samory for staying late just to finish up and make sure he left this place spotless! Fantastic electrician with a very positive attitude. Super friendly!"
Annette D on February 2025
At Dependable Electrical, we offer a wide range of services for all residential homes and commercial businesses. Specializing in service changes and upgrades, panel swaps and upgrades, Electrical Vehicle charging stations and more. Safety and efficiency are our standards. Dependable Electrical is Licensed and Insured, operating throughout the Suffolk County area.
"Went great 👍. Steve, Mark and Samory were all very professional. Thanks for handling all our electrical issues. A special shout out to Samory for staying late just to finish up and make sure he left this place spotless! Fantastic electrician with a very positive attitude. Super friendly!"
Annette D on February 2025
Our mission at RJD Electrical is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face, at the end of a project! RJD Electrical, stacks up with the competition, and surpasses it with competitive prices, second to none workmanship, and a prompt/responsive team. We give you quality that you can measure, and a finished product that will enhance your home forever. Licensed and Insured! Call us today!
"Excellent work! Reed and Cole did a good job installing my EV charger. Took less than the 2 hours they thought. And a great price! I will use them for future work and will refer my friends to them. Professional and nice people."
Edmund L on January 2025
Our mission at RJD Electrical is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face, at the end of a project! RJD Electrical, stacks up with the competition, and surpasses it with competitive prices, second to none workmanship, and a prompt/responsive team. We give you quality that you can measure, and a finished product that will enhance your home forever. Licensed and Insured! Call us today!
"Excellent work! Reed and Cole did a good job installing my EV charger. Took less than the 2 hours they thought. And a great price! I will use them for future work and will refer my friends to them. Professional and nice people."
Edmund L on January 2025
I'm licensed in Suffolk County NY, and have plenty of experience - 20+ years. I never cut corners. My goal is to make sure my customers are 100% satisfied.
"Andrew has done fantastic work at my house since 2020. He has a great personality along with hard work ethics and amazing work. If you are looking for a good company Good Light is a great choice!"
Marvin T on June 2024
I'm licensed in Suffolk County NY, and have plenty of experience - 20+ years. I never cut corners. My goal is to make sure my customers are 100% satisfied.
"Andrew has done fantastic work at my house since 2020. He has a great personality along with hard work ethics and amazing work. If you are looking for a good company Good Light is a great choice!"
Marvin T on June 2024
Gen Ready, Inc., was established in 1979 to service the surrounding area and provide residents with all their standby electric power solutions. Our staff of knowledgeable and dedicated professionals take pride in providing outstanding, personalized service to our customers and our community. All of our techs are factory trained and certified for warranty repair and maintenance. Call us today and become one of our many satisfied customers. You can visit us online at www.getgenready.com
"After getting several quotes, last year we hired GenReady to install a house generator. Ed, the owner of the company impressed us from the start. He was knowledgeable and patiently explained the process as well as answering our questions. We knew right away that GenReady was the company for us. Lindsay kept us up to date as we moved along in the process. Our generator was installed last July. Andrew and his team installed the generator with expertise and efficiency. They took care to leave our house and yard spotless. Lindsay and Andrew were always happy to answer my questions and address me concerns. We’ve needed the generator only once (thank goodness) when our power went out due to a necessary power line repair after a car crashed into a utility pole on our street. When the power went out, our generator turned on within seconds. Our house was up and running for the four hours the line repair took, and if it weren’t for the blink of lights, we never would have known our generator was running. Every other week, our generator self tests for a few minutes giving us peace mind that it will be here for us if and when we need it. Just like the generator, GenReady is a company that runs efficiently and seamlessly. Just today, Lindsay called to tell me someone would be coming tomorrow to change the oil which reminded me that I am long overdue in submitting this well deserved rave review. Thank you to the entire GenReady team (and to Great White Propane) for all you’ve done to help us know we can weather any power outage."
nancy a on July 2020
Gen Ready, Inc., was established in 1979 to service the surrounding area and provide residents with all their standby electric power solutions. Our staff of knowledgeable and dedicated professionals take pride in providing outstanding, personalized service to our customers and our community. All of our techs are factory trained and certified for warranty repair and maintenance. Call us today and become one of our many satisfied customers. You can visit us online at www.getgenready.com
"After getting several quotes, last year we hired GenReady to install a house generator. Ed, the owner of the company impressed us from the start. He was knowledgeable and patiently explained the process as well as answering our questions. We knew right away that GenReady was the company for us. Lindsay kept us up to date as we moved along in the process. Our generator was installed last July. Andrew and his team installed the generator with expertise and efficiency. They took care to leave our house and yard spotless. Lindsay and Andrew were always happy to answer my questions and address me concerns. We’ve needed the generator only once (thank goodness) when our power went out due to a necessary power line repair after a car crashed into a utility pole on our street. When the power went out, our generator turned on within seconds. Our house was up and running for the four hours the line repair took, and if it weren’t for the blink of lights, we never would have known our generator was running. Every other week, our generator self tests for a few minutes giving us peace mind that it will be here for us if and when we need it. Just like the generator, GenReady is a company that runs efficiently and seamlessly. Just today, Lindsay called to tell me someone would be coming tomorrow to change the oil which reminded me that I am long overdue in submitting this well deserved rave review. Thank you to the entire GenReady team (and to Great White Propane) for all you’ve done to help us know we can weather any power outage."
nancy a on July 2020
Our team of Electricians is skilled, professional, and conscientious with years of experience dealing with the unforeseeable circumstances the commercial and residential Industries present. In addition, we partner with teams of architects, engineers, contractors, manufacturers and suppliers to further, strengthen our foundation in the industry. Each new customer that we work with is welcomed with a lifelong commitment to brighten their lives along the way. We care about what we do and it shows!
"It went very well. Derick was prompted, knowledgeable, and friendly."
Felix V on August 2024
Our team of Electricians is skilled, professional, and conscientious with years of experience dealing with the unforeseeable circumstances the commercial and residential Industries present. In addition, we partner with teams of architects, engineers, contractors, manufacturers and suppliers to further, strengthen our foundation in the industry. Each new customer that we work with is welcomed with a lifelong commitment to brighten their lives along the way. We care about what we do and it shows!
"It went very well. Derick was prompted, knowledgeable, and friendly."
Felix V on August 2024
We're a family owned & operated electrical services company specializing in residential jobs in the Five Boroughs, Nassau & Suffolk Counties. At Duffy Electric, we’re dedicated to illuminating lives and empowering businesses with top-tier electrical solutions with over a decade of experience. Based in Nassau & Suffolk Counties and extending our expertise across the coast. We specialize in a wide range of electrical services tailored to meet the unique needs of our community. Our Mission: To provide reliable, efficient, and innovative electrical services that ensure safety, enhance convenience, and support the growth of local homes and businesses. Our Services: Residential Electrical Installations: From new construction wiring to smart home upgrades, our certified electricians bring light and comfort to your living space. Commercial Electrical Solutions: We power your business success with custom electrical designs, energy-efficient lighting, and preventive maintenance programs. Why Choose Duffy Electric? Local Expertise: As residents of Nassau & Suffolk Counties, we have a personal stake in the well-being of our neighborhoods and the success of local enterprises. Quality Craftsmanship: Our work reflects our commitment to excellence, with every project completed to the highest industry standards. Customer-Centric Approach: We listen, we understand, and we deliver electrical services that align with your vision and requirements. Safety & Sustainability: Safety is our top priority. We adhere to strict safety protocols and stay abreast of the latest eco-friendly practices to promote a sustainable future. Get Connected: Ready to experience the Duffy Electric difference? Contact us for a consultation and let’s energize your electrical projects!
"Very professional! Would definitely hire again. Highly recommended!!!"
Adriana C on November 2024
We're a family owned & operated electrical services company specializing in residential jobs in the Five Boroughs, Nassau & Suffolk Counties. At Duffy Electric, we’re dedicated to illuminating lives and empowering businesses with top-tier electrical solutions with over a decade of experience. Based in Nassau & Suffolk Counties and extending our expertise across the coast. We specialize in a wide range of electrical services tailored to meet the unique needs of our community. Our Mission: To provide reliable, efficient, and innovative electrical services that ensure safety, enhance convenience, and support the growth of local homes and businesses. Our Services: Residential Electrical Installations: From new construction wiring to smart home upgrades, our certified electricians bring light and comfort to your living space. Commercial Electrical Solutions: We power your business success with custom electrical designs, energy-efficient lighting, and preventive maintenance programs. Why Choose Duffy Electric? Local Expertise: As residents of Nassau & Suffolk Counties, we have a personal stake in the well-being of our neighborhoods and the success of local enterprises. Quality Craftsmanship: Our work reflects our commitment to excellence, with every project completed to the highest industry standards. Customer-Centric Approach: We listen, we understand, and we deliver electrical services that align with your vision and requirements. Safety & Sustainability: Safety is our top priority. We adhere to strict safety protocols and stay abreast of the latest eco-friendly practices to promote a sustainable future. Get Connected: Ready to experience the Duffy Electric difference? Contact us for a consultation and let’s energize your electrical projects!
"Very professional! Would definitely hire again. Highly recommended!!!"
Adriana C on November 2024
We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.
We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.
Generator installations FAQs
Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:
Portable generators with 1kW–7.5kW capacity: $500–$2,000
Partial generators with 9kW–20kW capacity: $2,000–$6,300
Whole-house generators with 22kW–48kW: $5,000–$18,000
When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.
When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:
Refrigerator: 600 watts
Large dehumidifier: 700 watts
Large window air conditioner: 1,400 watts
Water heater: 3,000 watts
Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running.
Here’s what you can run with different wattages and types of generators:
Portable generator:
2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers.
4,000 watts will keep two large appliances operating and a few smaller devices.
8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.
Partial to whole-house generator:
20,000 watts and above will make it seem like your home’s power is still on.
The value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:
Experience frequent or prolonged power outages
Work from home
Store a lot of cold food
Have a sump pump
Have a pump for well water
Use electronic medical devices
Live in a climate requiring heating or cooling
- Port Jefferson Station
- Mount Sinai
- Miller Place
- Setauket
- East Setauket
- Coram
- Selden
- Stony Brook
- South Setauket
- Centereach
- Sound Beach
- Middle Island
- Lake Grove
- Rocky Point
- Farmingville
- Saint James
- Medford
- Nesconset
- Holtsville
- Shoreham
- Long Island
- Lake Ronkonkoma
- Yaphank
- Ridge
- Holbrook
- Ronkonkoma
- Smithtown
- Kings Park
- Hauppauge
- Islandia
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