SUNation Energy Logo

SUNation Energy


star star star star star_half


Overall Score

error This company may not service all states.
See states serviced
LAST UPDATED: July 27th, 2022

Founded in 2003, SUNation Energy (formerly SUNation Solar Systems) is located in Ronkonkoma, New York. The company is a full-service solar installation provider and has earned a solid reputation in the community by successfully performing over 5,000 installations. SUNation Energy's mission is to create a more sustainable world through renewable, clean energy for generations to come, and the company is committed to maintaining a safe and happy workplace for its team.

SUNation Energy has earned numerous awards from Best of Long Island, including Best Solar Company (11 years in a row), Best Alternative Energy Company (9 years in a row), Best Green Business (8 years in a row), and Best Environmental Organization (2 years in a row). Additionally, the company was rated as one of the Top Long Island Workplaces 2019 and one of INC. 5000's America’s Fastest Growing private companies.


The Good

  • Flexible Payment Options
  • High Quality Solar Panels
  • Additional Services
  • Positive Customer Feedback

Flexible Payment Options

SUNation Energy empowers customers to take advantage of solar ownership by offering purchase to own payment options. The company works with various lenders and has several loan options available. SUNation Energy also offers two years without payment.

High Quality Solar Panels

SUNation Energy offers solar products from some of the top manufacturers in the industry, including LG, Panasonic, and Solaria. Additionally, the company is a Tesla Powerwall Certified Installer.

Additional Services

In addition to installing qualify solar panels systems, SUNation Energy also provides efficiency upgrades or replacement services to the roof. The company also installs solar energy storage through the Tesla Powerwall.

Positive Customer Feedback

Customers of SUNation Energy who have left reviews on our site have been praising the company for the level of customer service that it offers. Multiple reviews mentioned the solar sales rep checking up on the customer more than a year after the installation was completed to ensure that everything was up to par.


The Bad

  • Only Available in New York

Only Available in New York

SUNation Energy only offers service in Nassau, Suffolk, Queens, and Long Island. Unfortunately, if you live outside of these regions, you won't have the option to do business with SUNation Energy.


The Bottom Line

SUNation Energy offers purchase to own payment options, as well as a number of different brands of high quality equipment, including LG, Panasonic, and Solaria panels. The company provides its customers with great warranties, but as of now, it only services a few areas in New York. If you live in one of those areas, SUNation Energy may be a good option for you. However, if you live elsewhere, you'll need to check out other solar companies.

View Best Solar Companies

Was this content helpful?
thumb_up Yes thumb_down No

Message from
SUNation Energy

We pride ourselves on providing the highest level of customer experience. We are your neighbors – we live here, we work here, and we give back to our communities.

We want to make Long Island a better place to live for generations to come through clean, efficient solar power. SUNation has won Best Solar Company on Long Island for over a decade!

Star Rating


star star star star star_half

23 Reviews

Review Breakdown

5 grade


4 grade


3 grade


2 grade


1 grade


Sentiment Criteria


star star star star star_half


star star star star star_half


star star star star star_half


star star star star star_half

Filter by:


Sort by:

star star star_border star_border star_border

Angelica Torres Torrington, CT

We chose Sunation over a competitor back in 2010. The installation was quick, efficient and well run. As another customer said they took care of 'most' of the paperwork. There was an issue with Brookhaven Town and the CO after completion of the work, but Sunation took care of the additional paperwork and fees and it was done. The panels have produced adequate power, I wish we had the ability to add more panels (we have 33 but LIPA limits how many you can have so you can never get ahead of them). Despite having panels we are constantly making sure we don't waste energy, have replaced bulbs with LED's etc. The biggest draw on our credits is air conditioning, Our disappointment in the company concerns customer service AFTER installation. 1) we are supposed to have a yearly visit for the warranty period of 10 years. I am the one to call them, if I forget, they forget. I would prefer they had a more vested interest in their product and sent a reminder card or email. It would not take much on their part. I have now learned to set myself an electronic reminder on my phone 2) This one is very important. At the time of discussion of the product and details of cost, we asked about installing squirrel guard, an item discussed and included with other solar installation companies. Sunation salesman said it was not necessary as the other guys set their panels way higher on the roof and Sunation's panels sit lower making it impossible for squirrels to get under. Well, here we are entering year 7 and guess what? Squirrels chewed one of our three main wires and now we have to pay for squirrel guard in the tune of 1800. At the time of installation, the competitor quoted us 1000 for the addition of squirrel guard. I know, we should have insisted for squirrel guard then, but the salesman vehemently said we did not need it and insulted the other company. Now we have an unexpected large bill that could have been included in our original payment and could have been partially covered in our rebates available at the time (LIPA, Federal and State). Furthermore, since we are still under warranty to Sunation we do not have the option of installing the squirrel guard ourselves (we were told this would void the remaining three years of the warranty by the inspector) or having another company do it. So our hands are tied, we have no choices. It is for that reason I give them a 5. We are not pleased with them and honestly, for years have given their name to friends considering solar but will no longer do so. They also lack a feature I would have liked where you can monitor your system on line and observe usage. Other companies included that at the time we installed in 2010. So I would say they are very good at getting you signed up and up and running but after installation, service is poor. If you are looking to install solar, do a better job than we did about finding out how well they service after installation. Anyone can do a great job of getting the panels on and running but it is important that they are available and helpful and after the fact.

5 years ago