SUNation Energy

SUNation Energy is a solar installation company based in Ronkonkoma, NY serving 2 New York counties, from Suffolk to Nassau, installing since 2003.

EcoGen America lists SUNation Energy in our vetted installer network for New York. Every fact on this page comes from the company’s own published materials, read by our team on September 7, 2026, plus the state registry checks noted where we have made them. We do not accept payment for placement.

Key takeaways

  • Installs across 2 New York counties, from Suffolk to Nassau.
  • Publishes 3 license numbers on its own site.
  • Ways to pay: cash purchase, loans through Atmos Financing, GreenSky and Teachers Federal Credit Union and SUNation solar system lease.

SUNation Energy at a Glance

DetailWhat the Company Publishes
Headquarters171 Remington Blvd, Ronkonkoma, NY 11779
Founded2003
Installations10,000+ residential and commercial installations
Service Area2 New York counties, from Suffolk to Nassau
Official Websitesunation.com

Where SUNation Energy Installs

SUNation Energy names 2 New York counties on its own site: Suffolk and Nassau.

A county on this list means the company advertises work there, not that a crew is based there. Ask where the crew that will be on your roof actually sits; a local base shows up as faster service calls later.

Licensing and Certifications

License numbers exactly as the company prints them. Where we have checked a number against the state registry, the result and date are shown; where we have not, the row says so. Verify any number yourself under the exact business name on your contract before signing.

State
License
Number
Registry Check
Note
NY
Suffolk County Home Improvement
44104-H
Not yet checked by us
As published on the company site
NY
Nassau County Home Improvement
H2409230000
Not yet checked by us
As published on the company site
NY
NYC Consumer Affairs
1431197-DCA
Not yet checked by us
As published on the company site

Certifications and memberships the company displays:

  • NYSERDA Platinum status (the company says it is 1 of 5 solar companies in New York State at that tier)
  • Tesla Powerwall Premier Installer
  • Pro Dealer with REC, S-Platform and Enphase
  • BBB A+ rating

Equipment and Warranties

Warranty terms are not itemized on the site; SunPower-era customers are directed to Maxeon and Enphase for equipment warranties

Brands the company names on its site:

  • Panels: REC and SunPower (legacy installs; Maxeon honors panel warranties)
  • Inverters: Enphase
  • Batteries: Tesla Powerwall and Enphase Encharge

How You Can Pay

  • Cash purchase
  • Loans through Atmos Financing, GreenSky and Teachers Federal Credit Union
  • SUNation solar system lease

Whichever route you take, ask for the cash price and the financed price side by side. The gap between them is where dealer fees hide, and it is the first number our quote guide tells you to find.

Programs and Services

Services the company offers: residential and commercial solar, battery storage, EV charging, roofing and SUNation Service division for existing systems.

  • PSEG Long Island time-of-day rate guidance published on its site

Recognition the company displays: Newsday Long Island Top Workplaces (multiple years) and Voted Best Solar Business and Best Alternative Energy Company on Long Island (as displayed by the company).

Why SUNation Energy Is in Our Network

  • More than 10,000 residential and commercial installations since 2003
  • Publishes Suffolk, Nassau and NYC license numbers directly on its site
  • Serves Suffolk, Nassau, Queens, Brooklyn and Staten Island
  • Battery storage alongside rooftop solar

Featured In

Articles and guides on EcoGen America that list or mention SUNation Energy.

Where We Match Homeowners with SUNation Energy

Coverage below reflects the states where SUNation Energy appears in our advisor network. Each guide carries that state’s rates, programs and honest payback math, which is the context any quote deserves.

Who SUNation Energy Fits

Best fit: homeowners in the 2 New York counties above.

Before You Sign with SUNation Energy

However good any installer looks on paper, the same three checks protect you every time: verify the license with your state’s contractor authority under the exact business name on your contract, get the workmanship warranty in writing, and make sure the savings projection uses your utility’s real rates. If you’d like an independent read first, start with the state guide linked above or get a free solar estimate for your address.

Where These Facts Come From

Pages of the company’s own site we read for this profile. Registry checks name the registry and date in the licensing table.