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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

5 244 4 1
3 0
2 1 1 11

Showing 1 star reviews only. Show all

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.

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.

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.

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.

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.

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!!!

Ryan

Reviewed on Sep 8, 2023

Didn’t deliver on what was promised

Run away. Never have I seen a company run away from its promises more than Harvest. I specifically asked for enough panels to more than cover my current electrical needs as well as for adding an air conditioner down the road. I didn’t care if it costs a bit more. Just give me way more than I need was my ask. Fast forward a few years later, my system doesn’t cover all of my electric bill and that’s without even adding the new air conditioner. When I first complained, they said let’s see how the system is doing in a year. OK sure, I’ll wait. I call back in a year and get nothing but the run-around. No offer to fix their broken promise. In fact, nothing at all but excuses. Stay away.

CS

Reviewed on Nov 23, 2021

Run away from this company

Run away from this company. I don't know what happened, but they are not the company they once were. As part of a renovation, we hired them to remove and re-install the system they installed several years ago. Cost was expensive, but comparable to others. The first set of techs sent to re-installed the system had no idea what they were doing and wired everything wrong, blowing out our inverter. They then proceeded to try to fix the issues 10 more times, breaking more equipment along the way (blowing out a second inverter). In fact each time a new set of techs showed up, no one could understand how it was wired, their words not mine. We lost 3 months of peak solar production and when I fought for reimbursement i was told no by the owner, because it was "equipment malfunctions"...even though they couldn't figure out the problem(s) for months that they caused. Not to mention, while this dispute was ongoing they sent a collections agency after me without prior notice. This is how they treat long term customers. Like I said, you have options, run away from this company.

Shafik

Reviewed on Mar 31, 2021

This company does not keep their promise.

Back to 2018 when i first met the sales person to discuss the solar system I asked if my roof size will cover my electric bill 100% she said absolutely and I told her that more than 3 companies told me the maximum you will get 80% , so i was promised that I will get around 11,000 kw /year , First the system is not covering my consumption which is 13,000kw/year at least. Second problem even the promised production in the agreement is not reachable yearly, what i get maximum is 10,000kw/yearly. To conclude this i was overpromised for my system and i paid for something I didn't get, when I called them more than 30 or 40 times with no response from the sales , company , customer service or even managers, At the end of many calls they told me higher position title will call you, I got a call in January 19th so he promised me that he will contact the engineering team and get back to me in the next 48 hours but herewith affter couple month I still didn't hear from him and he didn't even response for many texts I sent . Now I can tell this is the worst Idea I did and worst company I dealt with as after the sales is done no respect or responses at all . I'm ending up paying for the electric bill and for the solar as well . I'll see what is the  next legal action to take . Really bad experience. Then after several attempts they came back to me offering additional panels with discount as a new customer I just told them I need to fill my contract then the sales manager told me make it valuable for both of us we can give you additional panels and we can cover some of them. First offer 10 panels for $5500 and I agreed then after 20 days of calls finally he called me saying it was a mistake and I can't do it , Second offer $5500 for 7 panels he offered and I said 8 panels then he denied it. 3rd offer 5 panels $5500 and $6500 for installments , themes like they deal with me as a new customer not even try to find a solution to resolve there mistaken. They are really ridiculous and wasting of time . I'll hire attorney to find out my right. I need to get more panels to reach the production I promised and cover my electric bill as they promised me in the beginning of the deal at least 13000kw/year

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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