Hawaii Energy Connection Review

Solar and battery installer (residential brand: KumuKit)Based in Aiea, HawaiiProfile updated October 13, 2026

Is Hawaii Energy Connection a good choice?

Hawaii Energy Connection fits Oahu homeowners who want to own a packaged solar-plus-battery system from a local installer. It sells homes its KumuKit system and publishes a 25-year panel warranty, 10 to 25 years on inverters and a 10-year workmanship warranty. Parts of its websites are dated (copyright 2020, 2023 and 2024 events), so confirm current battery models, financing and warranty documents before you sign.

Price
Quote required; no system price on the company pages we reviewed. Costs
Coverage
HI: mainly Oahu; its commercial page says it has worked on all islands. Service area
Warranty
Panels 25 years, inverters 10 to 25, workmanship 10. Warranty
Request a solar estimate Check the warranty
On this page
  1. Why choose it, or not
  2. Hawaii Energy Connection reviews
  3. Cost and ways to pay
  4. Warranty
  5. Service area and licenses
  6. Compare installers
  7. Before choosing
  8. How we researched

Why choose Hawaii Energy Connection, and why you might not

What Hawaii Energy Connection does well, and where to be careful, compared with the installers it competes with most.

Reasons to choose Hawaii Energy Connection

  • It covers its own work for 10 yearsHawaii Energy Connection lists a 10-year warranty on its own work. It also lists 25 years on panels and 10 to 25 years on inverters. Of the three alternatives below, only AEI lists a 10-year term too.

  • A battery comes with every new systemIts home system, called KumuKit, comes with a battery. It suggests Qcells panels. RevoluSun also says a battery is standard on every system.

  • It fixes systems it did not put inHawaii Energy Connection says it services systems other companies installed. Its good reviews praise technicians who call back quickly and fix problems fast.

  • We found an active Hawaii licenseWe found an active Hawaii license for the company when we checked on October 13, 2026. You can check it with the state before you sign.

Reasons to look at others

  • You cannot rent the panelsHawaii Energy Connection sells only to owners: you pay upfront or take a loan. It does not name its lender. RevoluSun offers a PPA (you pay for the power; the company owns the panels).

  • No roof leak or battery warranty listedIt lists no warranty for leaks where the panels are bolted to the roof, and no battery warranty. Ask who fixes a leak, who pays, and for how long.

  • Parts of its websites are out of dateSome of its pages show a 2020 copyright and events from 2023 and 2024. Ask for the current battery model, loan terms and warranty papers before you sign.

  • Some owners waited months for repairsIts negative reviews describe half a system down for three months and another off for six months. They also mention missed visits and unanswered calls. Ask who handles repairs and how fast.

Hawaii Energy Connection reviews: what customers say

Each review site shows its own score; we read them on October 12 and 13, 2026 and do not combine them or add our own rating.

  • Google4.8 / 581 reviews · Aiea, HI office listing only, not company-wideRead reviews

The five positive reviews below praise professional technicians who return calls promptly and fix problems quickly, and clear help with design, permits and the monitoring app. The five negative reviews describe half a system down for three months, a system offline for six months with missed technician visits, unanswered calls, an unresolved damaged gutter and utility paperwork the reviewer says kept being returned. These are issues to ask about, not a measure of how often they happen. Ask Hawaii Energy Connection who handles service calls and how quickly.

5 recent 5-star reviews
  • 5 of 5 · Sep 21, 2026

    “The service provided by Shane was very professional and was very helpful.”

    Esther A. · Read on Google

  • 5 of 5 · Sep 10, 2026

    “The team was professional, knowledgeable, and genuinely committed to making the process smooth and stress-free.”

    Patricia i. · Read on Google

  • 5 of 5 · Aug 13, 2026

    “Eddie, was and has been exceptional from the start excellent communication, honest, friendly, and thorough.”

    Keoni M. · Read on Google

  • 5 of 5 · Aug 7, 2026

    “Both were professional and clearly explained the connectivity recovery process.”

    Sharon M. · Read on Google

  • 5 of 5 · Jul 30, 2026

    “Shane has been our technician from the beginning and provides great service.”

    Teresa S. · Read on Google

5 recent 1- and 2-star reviews
  • 1 of 5 · Apr 12, 2024

    “Half of our panels are not working and they keep telling us they are scheduling someone.”

    Russell S. · Read on Google

  • 1 of 5 · Mar 10, 2023

    “No one answers the phone or call you back when you leave a message.”

    Jaron H. · Read on Google

  • 1 of 5 · Jan 20, 2023

    “It's now January 2023, and yet no-call no-show.”

    Kanoe K. · Read on Google

  • 1 of 5 · Feb 5, 2018

    “I have had problems getting a rain gutter that was damage resolved.”

    Victor c. · Read on Google

  • 2 of 5 · Oct 28, 2016

    “We are going on almost FOUR MONTHS since it was installed and I'm still waiting.”

    Kira C. · Read on Google

How we picked these: the five newest 5-star and the five newest 1- or 2-star reviews with written text on Google and Trustpilot, as of October 2026 (81 reviews read, back to Sep 27, 2016). We found no Trustpilot page for Hawaii Energy Connection on October 12, 2026. Each quote is one sentence, word for word. Picking the highest and lowest ratings shows the range of experiences; it is not a representative sample, and we did not verify what reviewers describe.

How much does Hawaii Energy Connection cost?

Hawaii Energy Connection does not publish a system price on its KumuKit pages. It offers a free quote and says it sizes each system with its own software. Ask for an itemized quote showing the cash price, system size, panel, inverter and battery models and, for a loan, the financed total with APR and fees. Its pages still mention tax credits for owners; the federal credit ended for homeowner-owned systems placed in service after December 31, 2025. For state price ranges, see our solar panel cost guide; for how the plans compare, see loans, leases and PPAs.

Purchase

You own it

The company recommends owning the system and argues against residential leases and PPAs.

Solar loan

You own it

It mentions “easy financing options” and a loan payment; the lender is not named.

Plans as described on the KumuKit benefits page, read October 13, 2026. Its commercial overview also lists PPA and feed-in tariff options for business customers only.

Hawaii Energy Connection says it suggests Q CELLS panels with micro-inverters (benefits page) and that all new KumuKit systems include smart batteries (battery page). Its support library covers Enphase, FranklinWH and Generac PWRcell equipment. Your written proposal should list the exact panel, inverter and battery models, the system size in kilowatts (kW) and the forecast yearly production in kilowatt-hours (kWh). It also services systems it did not install.

What does Hawaii Energy Connection’s warranty cover?

Warranty terms Hawaii Energy Connection publishes, by type of coverage
Coverage
What Hawaii Energy Connection publishes
What to confirm
Solar panels
25 years
Whether the 25 years is the panel maker’s term or the company’s.
Panel output
Not published
Confirm in your proposal: the output guarantee and its term.
Inverter
10 to 25 years
Which inverter you get, its exact term and who pays labor to replace it.
Battery
Not published
Confirm in your proposal: the battery maker’s term and who services it.
Labor and workmanship
10 years
What the 10-year term and the “Done Right Guarantee” each cover.
Roof penetrations
Not listed as a separate term
Confirm in your proposal: whether the 10-year workmanship warranty covers leaks at panel mounts. The company says it flashes all roof penetrations.

Company-published terms from the KumuKit benefits page, read October 13, 2026. Your signed agreement decides what applies.

Its support page says repairs are done by the same teams that installed the system and that it quotes costs first when a problem falls outside the warranty period.

Where does Hawaii Energy Connection operate, and which licenses were checked?

Hawaii Energy Connection’s KumuKit site presents it as an Oahu solar company and its job ads require Oahu residents; its commercial overview says it has provided solar for all islands (read October 13, 2026). It names no specific towns. A listed state does not mean every address qualifies or that EcoGen can connect you with Hawaii Energy Connection there.

Showing Aiea, HI (headquarters)

Office address (1)

Address from Hawaii Energy Connection’s website, read October 13, 2026.

Licenses

We found 1 active license record in state registries (October 13, 2026). Check the license yourself under the exact business name on your contract. A license check confirms registration, not workmanship quality.

Hawaii1 recordActive, checked Oct 13, 2026
  • License
    Contractor license
    Number
    C31046
    Registry check
    Active, Hawaii DCCA professional licensing, checked October 13, 2026
    Note
    Registry lists HAWAII ENERGY CONNECTION LLC; expires 09/30/2028. Hawaii files this license as CT-31046; the C is the class prefix.

Hawaii Energy Connection’s overview page says it is OSHA certified and fully licensed, insured and bondable, and that Inc. magazine listed it among fast-growing private companies in 2012. These are company statements; we did not verify them.

Hawaii Energy Connection compared with three other installers

All three share Hawaii Energy Connection’s only state. AEI and RevoluSun are also based on Oahu, and ProVision is based in Hilo. Every fact comes from the company profiles linked below.

Hawaii Energy Connection compared with three installers that serve the same states
Hawaii Energy ConnectionThis pageAlternate Energy HawaiiRevoluSunProVision Solar
Best forOwning a solar and battery package on OahuSolar, water heating, AC and roofing togetherOahu homes that want a battery as standardBig Island and Maui homes
Head officeAiea, HIPearl City, HIHonolulu, HIHilo, HI
States shared with Hawaii Energy ConnectionIts only state1: HI1: HI1: HI
RoofingNot listedYesNot listedNot listed
Ways to payBuy, loan (lender not named)Buy, credit union loan, Sungage loanCash, local loans, PPA, prepaid PPASungage loan, cash or your own lender
Labor warranty10 years10 years25 years with its PPA onlyNot listed
Roof leak warrantyNot listed separatelyNot listedNot listedNot listed
Brands namedQcells (suggested), Enphase, FranklinWH, GeneracREC, Hyundai, Tesla, Panasonic, EnphaseTesla (batteries)Qcells, Maxeon, REC, SMA, SolarEdge, Tesla
Google score*4.8 (81 reviews)4 (57 reviews)No Google listing found4.9 (91 reviews)

*Each Google score is for the company’s head-office listing only, read October 12 and 13, 2026.

Full profiles: Alternate Energy Hawaii · RevoluSun · ProVision Solar

Before choosing Hawaii Energy Connection

Ask for these in writing:

  1. An itemized quote with the cash price and the financed total, including the APR and all fees.
  2. The exact panel, inverter and battery models, the system size in kW and the forecast yearly production in kWh.
  3. The warranty documents for your payment plan: panels, inverter, labor and roof penetrations.
  4. Your local service contact, and who handles utility approval and warranty claims.
  5. The exact company on the contract, such as Hawaii Energy Connection, and its license for your state.

Before you sign, read the quote line by line and bring our questions to ask a solar installer.

Ready to compare proposals?

Request a solar estimate

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How we researched this profile

We read Hawaii Energy Connection’s own pages on October 13, 2026: its homepage and commercial overview, and its KumuKit residential pages (home, benefits, solar, battery storage, support and contact). We did not check its license in a state registry. On October 14, 2026 we also checked its Google Business listing, which shows the same Aiea address, links to the KumuKit site and is not marked closed; its own sites were behind a bot check that day, and the Hawaii business registry was too. We did not buy a system, request a quote, visit an office or interview customers. Hawaii Energy Connection did not review this page.

Our installer methodology explains what we check.

Sources (9)