Suffolk County ranks first in New York State for the total number of power outages. Hurricane Sandy in 2012, Hurricane Ida in 2021, and a steady rotation of nor’easters have knocked out PSEG Long Island service for days at a stretch across Babylon, Huntington, Islip, and beyond.
The county’s geography complicates the installation decision as much as it drives it. Western Suffolk has dense concentrations of older single-family homes, many running on 100-amp panels that limit standard generator hookups. The East End carries large year-round properties and seasonal homes in the Hamptons and North Fork, some on propane rather than natural gas or diesel. Finding the right generator installers in Suffolk County means finding a contractor who understands local township permit requirements, available fuel sources, and how to size a system for your property’s specific load.
Between January and June 2026, our team evaluated 15 electrical contractors offering generator installation in Suffolk County. We assessed each company across the following five criteria:
- Service Quality Score: Our 1.0–5.0 evaluation system weighs customer satisfaction, installation quality, and verified electrical licensing and certifications
- Year Founded: Contractors with longer operating histories carry broader brand inventories, deeper transfer switch expertise, and greater familiarity with Suffolk County’s town-by-town permit process
- 24/7 Emergency Availability: Whether the company offers genuine around-the-clock service for failed systems and post-storm power emergencies, not just standard business-hours coverage
- Average Response Time: How quickly an installer can assess, quote, schedule, and complete a generator installation, or respond to an urgent service call
- Service Range: Whether the company handles generator installation exclusively or offers a broader electrical service range, and which property types they are equipped to serve
Based on our algorithm, we rank-ordered these companies and identified the 5 best generator installers in Suffolk. The table below breaks down where each stands, with in-depth reviews following.
The Best Generator Installers in Suffolk County
| Rank | Company | Service Quality Score | Year Founded | 24/7 Emergency | Avg Response Time | Service Range |
| 1 | Strong Island Electric | 4.9 | 1933 | Yes | Under 3 Hours | Generator Installation, Full Electrical & Home Services |
| 2 | HomeOps Electric | 4.8 | 2001 | Yes | Same Day | Generator Installation & Full Electrical |
| 3 | Marra Electric | 4.7 | 2004 | Yes | Same Day | Generator Installation & Full Electrical |
| 4 | Nassau Suffolk Electrical Services | 4.6 | 1981 | Yes | Same Day | Generator Installation & Full Electrical |
| 5 | Big Sky Electric | 4.5 | 2008 | No | Same Day | Generator Installation & Electrical |
Strong Island Electric
Strong Island Electric brings nearly a century of electrical history to Suffolk County, operating as part of the Skaggs-Walsh family of companies with coverage across all of Long Island. They stock every generator category: compact units from 800 to 6,500 watts, portable systems up to 16,000 watts, and whole-home standby generators at 60,000-plus watts, covering everything from a Bay Shore Cape to a large Hamptons property running on propane. As a Generac Authorized Dealer with factory-certified technicians, manufacturer backing comes standard on every job.
No other company on this list guarantees a technician on-site within 3 hours, around the clock. They handle PSEG coordination, town-level permit filing, transfer switch installation, and panel assessments without subcontracting. Service plan members receive priority dispatch, year-round parts-and-labor coverage, and access to the full Skaggs-Walsh network for plumbing, HVAC, and other home services through a single point of contact.
Service Quality Score: 4.9
Year Founded: 1933
24/7 Emergency: Yes
Avg Response Time: Under 3 Hours
Service Range: Generator Installation, Full Electrical & Home Services
Contact: Suffolk County generator installation page
| Summary of Online Reviews |
| Customers describe Strong Island Electric as “professional, hard workers who did a fabulous job” and highlight “immediate responsiveness, fast and neat work, and an accurate quote.” Others note the team “combines the resources of a large company with the personal touch of a local contractor.” |
HomeOps Electric
HomeOps Electric is a family-owned electrical contractor based in Port Jefferson, serving Suffolk County homeowners since 2001. With a 4.8 Google rating across 288-plus reviews and 24-hour emergency availability, they have built a dependable track record for generator wiring, transfer switch installation, inlet box hookups, and backup power planning. Their pre-installation panel and load review is a genuine asset for homeowners in older western Suffolk communities where existing electrical capacity can restrict generator sizing.
hile HomeOps is a strong electrical contractor, their work stops at the electrical side of the job. Homeowners who want a single company handling plumbing, HVAC, and home services alongside their generator installation will need to coordinate separate contractors, something the Skaggs-Walsh network behind Strong Island Electric eliminates entirely. HomeOps also does not carry the same Generac Authorized Dealer certification or multi-brand generator inventory as the top spot..
Service Quality Score: 4.8
Year Founded: 2001
24/7 Emergency: Yes
Avg Response Time: Same Day
Service Range: Generator Installation & Full Electrical
Contact: HomeOps Electric generator page
| Summary of Online Reviews |
| Customers call HomeOps Electric “very professional, knowledgeable, and priced fairly” and note that technicians “drove 45 minutes to our home without hesitation.” Others highlight that “the team focused on safe installation from start to finish and explained every step clearly.” |
Marra Electric
Marra Electric was founded in Bohemia in 2004 with a straightforward operating standard: proper sizing, permits pulled, inspections passed, and upfront pricing before work begins. Over two decades in central Suffolk County, they’ve earned seven consecutive Angi Super Service Awards for generator installation and offer 24/7 emergency service. For a first-time generator buyer who wants a clear, no-surprises process, their approach removes a lot of common friction.
Marra Electric’s service footprint is strongest in central and western Suffolk, and East End homeowners or those in more remote townships may encounter longer scheduling windows during high-demand periods. They also do not hold Generac Authorized Dealer certification, which matters for homeowners who want factory-backed service contracts and the full weight of manufacturer warranty support on their installation.
Service Quality Score: 4.7
Year Founded: 2004
24/7 Emergency: Yes
Avg Response Time: Same Day
Service Range: Generator Installation & Full Electrical
Contact: Marra Electric generator installation page
| Summary of Online Reviews |
| Customers say Marra Electric “handled every permit and inspection without us having to lift a finger” and note that “the price quoted upfront matched the final bill exactly.” Some highlight that “the installation was clean and the crew left no trace they had been there.” |
Nassau Suffolk Electrical Services
Nassau Suffolk Electrical Services is a licensed and insured electrical contractor based in Selden with a generator installation division serving residential and commercial properties across both Nassau and Suffolk Counties. Their 400-plus five-star Google reviews reflect consistent customer feedback on response times and workmanship quality across a wide range of electrical projects.
Nassau Suffolk Electrical Services operates under several business (notably M&I Electric) names across different platforms, which can make warranty continuity and service accountability harder to verify before committing. Furthermore, no manufacturer authorization at the Generac or Briggs & Stratton dealer level is documented, making some smaller details difficult to verify. For a standard residential generator hookup, they are a capable and well-reviewed option. For homeowners who want a fully credentialed installer with a clear service history behind them, the top three offer more to evaluate.
Service Quality Score: 4.6
Year Founded: 1981
24/7 Emergency: Yes
Avg Response Time: Same Day
Service Range: Generator Installation & Full Electrical
Contact: Nassau Suffolk Electrical Services
| Summary of Online Reviews |
| Customers describe M&I Electric as “prompt, responsive, and quick to schedule” and note that technicians are “clean and efficient, getting the work done right the first time.” Some highlight that “estimates arrived within days and the final work matched what was promised.” |
Big Sky Electric
Big Sky Electric is a Bayport-based electrical contractor serving all of Suffolk County, with Generac generator installation among their primary residential services. Their 4.9 Yelp rating reflects strong customer satisfaction, and their local Suffolk County base means shorter dispatch distances for properties in the central and south shore areas of the county.
Their standard business hours run Monday through Friday, which raises questions about after-hours emergency availability during the post-storm situations where generator service is needed most. Their claimed operational history of 30-plus years also conflicts with third-party founding records, making it harder to independently verify the depth of institutional experience behind the company. For a routine standby generator installation in a well-served part of the county, Big Sky is a locally rooted option. For complex installations or situations where verified emergency availability and a documented track record matter, the companies above provide a stronger footing.
Service Quality Score: 4.5
Year Founded: 2008
24/7 Emergency: No
Avg Response Time: Same Day
Service Range: Generator Installation & Electrical
Contact: Big Sky Electric website
| Summary of Online Reviews |
| Customers call Big Sky Electric “the best — on time, no mess, honest about pricing, and refunded the difference when the job came in under quote.” Others note that “they came right away on an emergency call, were thorough, and priced more than fairly.” |
Get the Best Generator Installers in Suffolk with Strong Island Electric
When comparing the best generator installers in Suffolk County, no other contractor on this list delivers the same combination: more than 90 years of electrical history, Generac Authorized Dealer status, a 3-hour on-site guarantee around the clock, and full coverage across every generator category from compact to whole-home standby. They handle PSEG coordination, town-level permit filing, and transfer switch installation in-house, with no subcontractors involved.
Whether the project is a portable backup unit for a Huntington rental, a mid-range standby system for a Babylon Colonial, or a whole-home installation for a large North Fork or Hamptons property on propane, Strong Island Electric has the inventory, the licensing, and the local knowledge to do it right. Service plan membership adds year-round parts-and-labor coverage and priority emergency dispatch, with the full Skaggs-Walsh network available for plumbing, HVAC, and other home services through a single contact.
Contact us today or call (631) 627-1872 for the best generator installation in Suffolk County.
