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Harvest Power LLC

4.6 257 reviews Solar installer in Islip Terrace, NY
  • Installing since 2008
  • 1 area served
  • Licensed

Overview of Harvest Power LLC

Since its inception, Harvest Power has installed thousands of residential and commercial solar installations providing its clients with significant energy savings annually. This family-owned Long Island business is committed to serving its clients, providing them with the highest quality product and service at the most affordable price possible. Harvest Power takes pride in its stellar safety and client satisfaction record while staying on the cutting edge of new solar technology that serves its clients to the highest levels possible. Founding members, Carlo J. Lanza, who originated Friendly Construction in 1972 and Carlo P. Lanza, who initiated the Harvest Power program in 2008, have a combined 60 years of construction, energy efficiency, project management and solar industry experience. In addition to serving as president of Harvest Power, Carlo P. Lanza is a former Chairman of the Long Island Solar Energy Industry Association and a past President of the New York Solar Energy Industries Association. He holds a number of industry certifications and is a key voice on solar policy and energy efficiency standards for New York State. Harvest Power is a turnkey solar provider. With over 50 professionals on staff, the company employs engineers, architects, electricians and solar installers who hold a number of key certifications from industry associations and organizations. The entire installation process is handled in-house by the professionals on staff. This includes designing the system, processing any permits, rebates and financing as well as installing and monitoring the success of the solar system. Harvest Power, headquartered in Islip Terrace, New York, has been constantly looking for ways to grow and better serve its clients. With steadfast resolve the Harvest Power mission remains the same ... Help property owners achieve their goals of real energy independence, lower dependence on fossil fuels, reduce carbon emissions, and allow clients to enjoy the outstanding, direct monetary benefits of solar power. 2016, 2017,2018 & 2019 Angie’s List Super Service Award Recipient #41 on Solar Power World’s list of the Top 100 Residential Solar Contractors in North America

What Harvest Power LLC customers say

4.6

257 reviews

Joseph Valentine

Reviewed on Sep 10, 2026

Poor service

Install had issues that they fixed, but after having the system a little over a year, I had a blown fuse. When I realized I did, I called and emailed them. It took them 9 days to get back to me and another 6 to fix what they said was an easy fix, but didn’t have a common fuse so they had to order it. That’s over 15 days of lost production, my bank being depleted and seeing a very large unexpected electric bill. They told me to go scratch, and that it’s on me.

Michael Lauria

Reviewed on Sep 10, 2026

John Merkent is amazing

I had solar installed on my house. John Merkent made the process easy and smooth. John was no pressure didn’t push and answered all of my questions. I would recommend John and harvest solar a million times over

M & M

Reviewed on Aug 9, 2026

We had a great experience with Harvest Power from start to finish. The installers were professional, detail-oriented, and clearly took pride in doing the job right. They were thorough, respectful, and made sure everything was completed properly. We also felt we received a very good price for the system. Our salesperson, Mark Rossini, was especially helpful—he was knowledgeable, well-informed, responsive, and communicative throughout the entire process. He answered our questions, explained everything clearly, and kept us informed every step of the way. Overall, we’re very happy with our experience and would definitely recommend Harvest Solar to anyone considering going solar.

Omar Jones

Reviewed on Jul 25, 2026

Smooth solar installation from start to finish Tyler and the team at Harvest Power LLC made the whole process seamless. Tyler was knowledgeable and professional, answering all my questions and explaining everything clearly. The installation itself was quick and efficient, and I really appreciated how the crew cleaned up after themselves and treated my home with respect. Polite, professional, and got the job done right. Highly recommend!

Jackie Berkin

Reviewed on Jul 19, 2026

Highly recommend Jon Pollard and Harvest Power. If you are looking for an honest, professional, and knowledgeable expert, Jon is your guy. We shopped around and received multiple quotes, but Jon designed a premium system that offered the best value and competitive pricing. The system is now up and running, and we are really happy with its performance. What stands out most is Jon's responsiveness—whenever we have a question, he gets back to us quickly. His expertise made the whole process seamless.

Carlos Rojas

Reviewed on Jul 14, 2026

My experience with Harvest Power Solar was nothing short of exceptional, and I cannot speak highly enough of Mark Lieberman for his outstanding service from start to finish. Mark demonstrated an impressive level of professionalism and expertise, consistently providing clear, straightforward answers and making even the most complex aspects of the process easy to understand. His responsiveness, patience, and genuine commitment to ensuring I felt confident every step of the way truly set him apart. Thanks to Mark, transitioning to solar was seamless, efficient, and completely stress-free. His honesty and dedication gave me complete confidence in my decision, and the results have exceeded my expectations. I wholeheartedly and confidently recommend Harvest Power Solar and Mark Lieberman to anyone considering going solar—you will be in excellent hands. Thank you for delivering such an outstanding experience!

Poul

Reviewed on Jun 1, 2026

Mark Lieberman help me this job everything is gone very smooth thanks for everything

Disappointed but not surprised

Reviewed on Apr 13, 2026

Not even out of the gate

Been looking for years for one solar company to have it's act together, I fill out the questions online, I start getting several different people trying to contact me, I focus on one, Ander and we set up 11am Monday call, I get several reminders, I send in email my usage info for this call, and end up getting more people trying to contact, 11am comes and goes, no one calls, I wait until 11:15, I send a text, "no one has called" no response, at 11:45 I turn off my phone, if this is how it's going to start I don't want to see how it ends.

John Doe

Reviewed on Dec 11, 2025

Drawn out process, no results

Tried to work to get solar for over a year, they used that time to try and continue to increase my loan amount and rate due to lagging on their end.

Harvest Solar

Reviewed on Nov 30, 2025

Stay AWAY!!!

The level of unresponsiveness from this solar company has been extremely disappointing. I have been attempting to reach them for more than six months, during which time I received nothing but repeated excuses and delays. Despite referring four potential customers who were ready to move forward with solar installations, the company failed to contact any of them. After half a year of silence, they finally reached out—only to inform me that they would not be able to complete my installation before year-end, meaning I would no longer qualify for the federal tax credit. To make matters worse, their salesperson suggested they could simply bill me this year and install the system next year in order to claim the tax credit—an approach that raised serious concerns about their business practices. Overall, my experience has been deeply unsatisfactory. I strongly advise others to proceed with caution.

Bruce Smith & Diane DeArteaga

Reviewed on Oct 30, 2025

Go with Harvest

We've only had solar for a few weeks, but so far we're very happy to have chosen Harvest Power. We wasted too much time listening to many others, but everything changed when we spoke to Harvest. Particularly, Anthony Rossano. As a sales rep, Anthony's knowledge and people skills are superior. The installation was seamless and beautifully designed. Highly recommend, Harvest Power.

Mark Belanich

Reviewed on Oct 27, 2025

Mark Lieberman, our coordinator with Harvest Power was extremely helpful and knowledgeable of the entire solar package that we just completed installation First we had the complete roof re-shingled with 50 plus year shingles. We did it in black onyx to blend with the black solar panels. The roofing installers were great and did the entire job in one long day! A couple of days later the solar panels / system were installed in two days. 51 panels ! They energized the system a couple of days ago. It’s nice to see the meter going backwards during the day! Once again Mark Lieberman explained everything and made the whole process seamless. Sincerely, Mark M. Belanich

Nurul Chowdhury

Reviewed on Aug 29, 2025

Horrible service, stopped producing one month after installation, called them email them text them but not responsible answer.

Jennifer T

Reviewed on Jul 22, 2025

Amazing Mark L

We had the pleasure of meeting Mark Lieberman. I was referred to Harvest Power by a friend who had their Solar installed by Harvest Power. Mark was the most friendliest, honest rep. He was very thorough in explaining Solar to us step by step, from start to finish. He answered each question without hesitation. He knows his stuff. He steered us in the right direction with going Solar. I hate change, but I like the way he presented himself and the pros of going Solar. There were no cons We were very comfortable with him He’s easily liked. We previously had a consultation with a rep from another company, where we were hesitant He just talked about leasing, being free and dont worry, we don’t pay anything. Down the road you’d be paying alot leasing We purchased our panels from Harvest Power and that’s the way to go, buying them outright. The first rep from the other company, didn’t volunteer much info when we asked questions. We basically had to answer our own questions and he just agreed with us He was out for his company and not for us Mark was looking out for our best interest and wasn’t at all pushy We’re very happy we signed up with Mark Lieberman. We’re so looking forward to our first months experience with going Solar with Harvest Power We highly recommend Harvest Power and our salesperson Mark Lieberman TY Mark You’re very much appreciated!!

Vinny B

Reviewed on Apr 23, 2025

Harvest Power Saved Me Money

I began my journey with Harvest Power in the summer of 2024, and the entire process was efficiently completed with my solar system going live by September. I deliberately waited to write this review, wanting to ensure that the results were as promising as they initially seemed—and they absolutely are! Not only did I install solar panels with Harvest Power, but I also got a new roof. I was particularly anxious during tax season, wondering if the calculated return they estimated would hold true. To my delight, it did! Experience with Harvest Power: I conducted thorough research, speaking with multiple companies and gathering numerous quotes for both solar panels and roofing. What really set Harvest Power apart was the genuine professionalism and dedication of the team members I worked with—Mark Centauro and his manager, Frank M. They were diligent, incredibly kind, and took the time to thoroughly educate me on the benefits of solar energy. Every question I had about the panels and the roof was addressed with patience and clarity. A standout moment was when Mark candidly informed me about an unethical practice in a competitor's quote, which was essentially fraudulent. His honesty and transparency reinforced my confidence in choosing Harvest Power. Additionally, whenever Mark wasn’t available, Frank seamlessly stepped in to address my concerns, ensuring I felt supported throughout the process. Performance and Results: Since the system went live in the fall, I've witnessed a dramatic reduction in my energy costs, just as promised. The tax savings were also spot-on. Based on my experience, I can recommend Harvest Power without hesitation. Room for Improvement: If I had to point out one area for improvement, it would be their mobile app. It requires an additional add-on to display real-time energy usage. To be fair, Mark wasn’t aware of this due to a recent software update, but it would have been helpful to know upfront. Final Verdict: 10/10 for Harvest Power. Thank you, Mark C., Frank M., and the entire Harvest Power team for an outstanding experience!

Aleksandr K.

Reviewed on Feb 6, 2025

Review for Harvest Power LLC

I am extremely disappointed with my experience with Harvest Power LLC. They installed a solar system at my home, but it has failed to provide accurate energy reporting to PSEG Long Island. Despite numerous attempts to resolve this issue, their team has been completely unresponsive and unaccountable. After working directly with PSEG to investigate discrepancies between my electrical meter and the Enphase system readings, it was confirmed that there were no issues on PSEG’s end. This means the problem lies solely with Harvest Power’s installation and equipment. To make matters worse, the system they installed covers only 30% of my total energy consumption, far below what was promised. I feel completely misled about the efficiency and coverage of this system. I have been chasing their team for weeks with no resolution, and their lack of responsibility is unacceptable. Due to their failure to address these serious issues, I am now escalating my complaint to Enphase, the Better Business Bureau (BBB), the local consumer protection agency, and the State Attorney General’s office. If you are considering solar installation, I strongly advise against choosing Harvest Power LLC. They have shown zero accountability, and their customer service is practically nonexistent. Don't make the same mistake I did—go with a company that actually stands by its product and provides real support.

Paul Gerhard Fritz

Reviewed on Nov 5, 2024

My Harvest Solar panel installation project

I rate my experience with Harvest Solar as outstanding; 5 star all the way including 5 stars for Tyler Cirincione, the Harvest Solar, representative who worked with me throughout the project. He exhibited numerous qualities that warrant special commentary given his superior performance and excellent customer service. He was honest; transparent about the various positives and negatives of different courses of action; exhibited great of knowledge about solar technology which he shared in an open informative manner; was highly responsive to my questions and concerns; appeared earnest with an authentic desire to do a great job; and finally took a complicated multi variable project with many gears and wheels and simplified it into manageable parts ferrying me through each task while being kind and, importantly, patient with me being responsive to all my needs. I thank everyone involved including the team that replaced my roof and finally the Harvest team who installed the solar panels themselves.

Giovanni Zito

Reviewed on Oct 30, 2024

Frank Mirasola and his Team were very Professional!

Frank Mirasola came to my house and was patient, answered all my questions and was NOT pushy at all. He truly showed up to help. Even after the initial meeting he would answer my follow up text questions in a timely manner. That also brought me peace in moving forward with his company. His installation team was clean, quick and kind! I couldn't of asked for a better experience. Thanks Harvest Power for bringing your "A" team to my house!

Andy

Reviewed on Oct 28, 2024

Mark Liberman was absolutely Amazing and made this process extremely easy his attention and commitment to making this work for me was second to none.

Glen S

Reviewed on Oct 25, 2024

Excellent service from beginning of project to the end of the project. Tyler informed me of the process every step of the way including permitting, loan documentation, tax credits and installation. Highly recommend Harvest Power.

K. E. L.

Reviewed on Oct 18, 2024

Excellent service. Lenny & DeAnna were very professional, informative & accessible whether it was by phone call, text or email. The installation crew, Jose, Edgar & their crew, were prompt and courteous. All in all , the whole operation was very smooth.

Shannon

Reviewed on Oct 15, 2024

I highly recommend Harvest Power and working with Frank Mirasola was great! Frank was professional, he also explained everything clearly and walked us through the steps of the solar process. He answered all of our questions, concerns, and put us at ease. There were no pressured sale pitches, just honest answers. He made my choice for a solar company easy. The whole process was easy from beginning to end.

Saji

Reviewed on Oct 14, 2024

Mark Lieberman

Mark and his team have done a very thorough job in providing our home with the installation of a solar system. Mark is very reliable in answering any questions or concerns at any given time of day. Exceptional service overall, my family and I definitely recommend Mark and his team to anyone who may be interested in making a transition to solar power panels.

Art Williams

Reviewed on Sep 1, 2024

Harvest Power did a wonderful job installing our system from start to finish. Tyler Cirincione sold us the system and was attentive, honest and thorough.

Terence McSweeney

Reviewed on Jul 31, 2024

No follow up ever

I’ve had my solar since 2017. Twice I’ve had issues with the connections and I only found out about it after I received a much higher electric bill. Their response was that they don’t monitor the panels, which is crazy, but I guess I can understand. They said that’s the job of the customer. When I realized that there was no communication with my solar panels. I immediately called harvest only to be hung up on four times in a row. You can hear someone pick up the phone and hang it up immediately. Then came across their customer support phone number which is not actual employees of harvest rather just an answering service. After they promised me three times in three days that they would call me to help walk me through this process they have not called once. They send text messages all the time saying that they are going to calling in a certain amount of time (1 hour or 15 mins) and they never follow up. I would NEVER recommend using harvest solo panel ever.

SMitchell

Reviewed on Jul 26, 2024

Mark Rossini from Harvest Power did more for us in the first 2 days after our meeting than the previous 5 companies did altogether over the prior 7 months. His advice about our situation was spot on and backed up by his company. From our initial meeting until the installation was just about 2 months and that included issues on our end which held them up. Mark R kept in touch with us throughout the entire process and his updates and next steps to take were always when he said they would be. No missed appointments, no sitting around waiting for workmen, every task was completed on the schedule he gave us. His no pressure, no BS presentation of his company’s abilities, his availability to us, constant updates and his attention to detail on our purchase was surprisingly refreshing. I wish I had gone with Harvest Power in the first place and Mark Rossini is a major reason.

Osmond

Reviewed on Jul 12, 2024

Frank and his team is the best

I first met with Frank from Harvest Power about 2 months before the installation. He told me that by 6/15, I would have my solar panels installed. Indeed, by 6/15 my solar panels were installed. The office staff took care of everything. After the installation Frank continued and ongoing support and conversations to make sure everything was up to my expectations.

Jim

Reviewed on Jul 10, 2024

Horrible company

PLEASE BEWARE OF THIS COMPANY...Salesmen/women will cohearse you into signing..but if you change your mind they will threaten you and COME AFTER YOU FOR FEES AND MONEY. This is an unscrupulous and utterly horrible company with bad business practices. Please BE AWARE..HARVEST POWER IS THE WORST! After reading other reviews..they have damaged things and months later..they aren't fixed. I wish there was an option for ZERO STARS!!!

Frank H.

Reviewed on May 6, 2024

Reap the benefits of Harvest Power

Harvest Power and specifically Lenney Peters did an excellent job of making us feel comfortable with every step of the solar panel installation process. At the no-pressure sit-down meeting, all of the options were presented, with Lenney understanding our requests and needs and respecting them. Let me emphasize this point as this was a key piece in our decision making when shopping among solar companies. Where other companies were a bit patronizing, were trying to hand-hold, or even apply pressure, Harvest and Lenney understood that we knew what we were doing and had reverence that we had done a bit of research in advance. Another benefit of working with Harvest is that they also specialize in roofing, so the customer does not have to shop around for another, outside party in the event that one's roof does not meet the proper standards. We had gotten feedback about our roof from other parties, as well, so we knew the sales approach was genuine and sincere. It was reassuring that Harvest took care of everything, including the paperwork filing and all of the communications elements. Lenney personally makes himself available quite often and is passionate about his line of work. When he says we can reach out to him with any questions, I honestly believe we truly could, years later, and still receive the same level of care.

Noreen

Reviewed on Mar 12, 2024

5 stars

From start to finish, everything went well. Thank you to Lenney and the rest of the team at Harvest Solar Power. They handled everything professionally and with great efficiency. All of my questions were answered and I feel very confident recommending to my friends and family.

About Harvest Power LLC

2008
Installing since
257
Customer reviews
4.6
Average rating
1
Area served

What Harvest Power LLC does

Services

  • Installation
  • Roof Replacement

Licenses

  • 2030370

Reported by the company. SolarReviews has not independently verified these.

Where Harvest Power LLC works

  • New York

Where to find Harvest Power LLC

Head office

2941 Sunrise Hwy, Islip Terrace NY, 11752

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Harvest Power LLC

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