Best Solar Installers in Hamilton
We assessed 12 solar installers in Hamilton and ranked the top 5 on public rating quality, review volume and how recent the reviews are. The businesses listed below hold 498 Google reviews between them. No business can pay for a place in these rankings. Last updated 16 September 2026. How we rank →
Before you hire
Whether you use a dedicated solar power company or an electrician who installs solar panels, panel quality and installer experience vary significantly. Ask for the payback period calculation based on your actual power bills, check whether they use tier-1 panels, and confirm what happens to your warranty if the installer goes out of business.
Top 5 Solar Installers in Hamilton
The top 5 solar installers in Hamilton are #1 Harrisons Solar, #2 2E Electrical, #3 EFS Solar, #4 Waikato Wide Electrical, and #5 CSR Electrical, ranked by Top5 score. Scroll for our take on each, plus what to ask before you hire.
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1
Harrisons Solar - Waikato
★ 4.9 159 reviews +9 Top5 Score 173 +35★ 155 4★ 2 1★ 2Harrisons Solar coordinates full residential solar installs covering panels, battery storage, and Tesla Powerwall systems, with a consultant visiting in person before any commitment is made. Their back-office team handles all paperwork and council compliance, so customers report the process feeling straightforward even when the system takes two stages or spans multiple years.
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2
2E Electrical
★ 4.9 142 reviews Top5 Score 166 +35★ 129 4★ 9 3★ 2 2★ 1 1★ 12E Electrical turns around urgent electrical jobs quickly, with multiple customers reporting same-day or near-immediate attendance and problems resolved in a single visit. Rachael and the front-of-house team coordinate bookings by phone and email, sending photos to keep remote or absentee clients informed without requiring them to be on site.
location_on 18F Perclo Place, St Andrews, Hamilton
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3
EFS Solar
↑ 4★ 5.0 41 reviews +27 Top5 Score 154 +205★ 39 4★ 2EFS Solar takes homeowners from first call through to a working system, covering sales consultation, roof installation, meter upgrades, and power company recommendations in one coordinated process. Hamish and the install crew, including Tom, Alex, and Zander, are named repeatedly for post-installation follow-up that keeps customers confident long after the panels go on.
location_on 35 Clem Newby Road, Burbush, Hamilton
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4
Waikato Wide Electrical - Solar Power Specialists
↓ 1★ 4.9 40 reviews +2 Top5 Score 1475★ 38 3★ 1 2★ 1Waikato Wide Electrical gets solar arrays on roofs fast, often completing full installations in a single day, and Mike's willingness to share detailed knowledge about system sizing and expected output helps households commit with confidence. One customer tracked $3,385 in energy savings over 12 months and found the system performed exactly as predicted at quote stage.
location_on 1782 Te Pahu Road, Karamu
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5
CSR Electrical
↓ 1★ 4.9 33 reviews +1 Top5 Score 147 +45★ 32 2★ 1CSR Electrical walks clients through multiple system design iterations before any work begins, covering panel selection, battery options, and system sizing to match actual household needs. When something goes wrong on site, like a ceiling damaged during installation, they organise the repair without being pushed to do so, and stay after hours if commissioning a large inverter and battery setup needs it.
location_on 22 Gilbek Place, Te Rapa, Hamilton
Before you hire a solar installer in Hamilton
Drawn from 161 customer reviews collected for this page. The first answer is what it costs.
What does a solar installation typically cost in New Zealand? expand_more
A standard 5kW to 6.6kW residential system costs between $10,000 and $14,000 installed, which suits most family homes. Adding a battery such as a Tesla Powerwall pushes the total to $20,000 or more depending on capacity.
Roof type, shading, and inverter brand all shift the final price, with concrete tile roofs and complex layouts costing more in labour. There is no government rebate for residential solar in New Zealand as of 2025, so you are funding the full cost yourself.
How do I check if a solar installer is properly accredited? expand_more
Every installer connecting a solar system to the grid must hold a current Registered Electrician licence, which you can verify through the publicly searchable register at the Electrical Workers Registration Board (EWRB) at ewrb.govt.nz before you sign anything. Beyond that legal baseline, look for membership of the Sustainable Energy Association of New Zealand (SEANZ), which requires members to meet competency and conduct standards, and ask whether the installer holds SolarCert certification, a specialist solar PV competency assessment that goes beyond the basic electrician licence.
SEANZ membership is voluntary, but it signals a commitment to industry standards and matters when it comes to grid connection approvals from your local lines company. Reviews here show that installers who issued a Certificate of Compliance and arranged a Record of Inspection promptly gave customers the clearest sign that paperwork and compliance were being handled correctly.
How accurate are the payback period and savings estimates I'm being given? expand_more
A realistic payback period for a 5kW to 10kW system in New Zealand sits between 8 and 12 years, but that figure shifts significantly depending on how much of your solar generation you actually use yourself. Export buy-back rates from retailers currently run around 8 to 17 cents per kWh, while you pay 28 to 35 cents to import, so a household that exports a large share of its generation will sit at the longer end of the payback range. Ask the installer to show you the self-consumption ratio they have assumed in their model, and check whether it reflects your actual daily usage patterns rather than a generic household profile.
What are the warning signs of a solar installer you shouldn't hire? expand_more
- –An installer who fails to connect part of the system correctly, leaving you running at reduced output for months without explanation, is a serious red flag.
- –Repeated component failures within the first few years, combined with slow or absent after-sales response, suggest the installer is not standing behind their work.
- –No system walkthrough or app setup at handover leaves you unable to monitor performance or spot problems early.
- –Slow or no response to calls and messages after installation is a pattern that appears in negative reviews and compounds every other problem.
- –Vague or verbal timelines with no written confirmation of installation dates or scope create disputes that are hard to resolve.
- –An installer who sends multiple tradespeople to a one-person job without disclosing the cost breakdown upfront is not being transparent about pricing.
What should you ask before hiring a solar installer? expand_more
- –Ask for their Electrical Workers Registration Board (EWRB) registration number and check it yourself at ewrb.govt.nz before signing.
- –Ask whether they hold SolarCert certification and are members of the Sustainable Energy Association of New Zealand (SEANZ), and request evidence of both.
- –Ask them to show you the self-consumption ratio, assumed export rate, and daily usage profile underpinning their savings estimate, so you can judge whether it reflects your household.
- –Ask who handles warranty claims after installation, whether that is the installer directly or a third party, and get the answer in writing along with both workmanship and component warranty terms.
- –Ask whether app setup, system monitoring, and a post-installation walkthrough are included, as reviews show this step is often skipped and leaves owners unable to spot underperformance.
- –Ask whether your roof type, metering setup, and lines company connection requirements have been assessed, since rural properties and non-standard meters can add cost and delay that a good installer raises upfront.
Also recommended solar installers in Hamilton
Ranked 6 to 10 on the same public review record.
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6
MV Solar & Electrical
★ 5.0 24 reviews Top5 Score 146 +55★ 24MV Solar & Electrical installs residential solar systems, including 13kW arrays and 20-panel setups, with multiple customers returning for further electrical work after their solar install. Matt leads a named crew including Luke and Jack, who show up on agreed dates, communicate clearly through the job, and price the work fairly.
location_on 39 Forsyth Street, St Andrews, Hamilton
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7
Eco Shine Solar Panel Cleaning - Hamilton
↓ 2★ 5.0 21 reviews Top5 Score 1425★ 21Eco Shine cleans solar panels, installs bird netting, and carries out system condition checks that generic cleaning companies cannot provide. After every visit, they send before-and-after photos and a written report so owners can see exactly what condition their panels are in and whether generation is being affected.
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8
Go Green Solar & Electrical LTD.
★ 5.0 18 reviews +7 Top5 Score 138 +75★ 18Go Green Solar installs panel arrays, battery systems including Tesla Powerwall and Sungrow, and heat pump hot water cylinders, with Radek carrying out the work personally on each job. Beyond installation, he checks in over the following months, advises on the best power company and tariff, and has delivered systems at higher spec than originally quoted without exceeding the agreed budget.
location_on 128D Otonga Valley Road, Waikato, Raglan
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9
Lightforce Solar - Waikato
↑ 1★ 4.6 10 reviews +2 Top5 Score 129 +45★ 9 1★ 1Lightforce Solar installs residential solar systems ranging from compact 5kW rooftop arrays to large triple-phase 39-panel setups with battery storage, and Jonathan's recommendations have left at least one household in credit rather than paying power bills. Installations are completed in a single day where the job allows, and crews leave the site tidy when they go.
location_on 436A State Highway 26, Newstead
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10
Ecosmart New Zealand Limited
↓ 1★ 4.7 10 reviews Top5 Score 1275★ 9 2★ 1Ecosmart installs grid-tied and battery-backed solar systems across the country, including large multi-stage setups combining panels, battery banks, and inverters sized to cover pools, hot water, and whole-household loads. Daryn personally handles the metering changes, grid export arrangements, and app setup, so clients in rural areas with frequent outages can run independently without managing the paperwork themselves.
location_on 8 Hounsell Road, Burbush, Hamilton
About this ranking
What the 10 solar installers listed above hold, at the 16 September 2026 check.
We first assessed solar installers in Hamilton in March 2026 and have rechecked the ranking four times since. Harrisons Solar has held first place at every check, and Waikato Wide Electrical has been in the top 5 alongside it throughout. Across the 14 locations we assess solar installers in, the 126 businesses listed have a median rating of 5.0, and one-star reviews are 2.1% of their total.
What has changed since March 2026? expand_more
- Sep 2026
EFS Solar entered the top 5, up from #7. Eco Shine left the top 5, down to #7.
- Aug 2026
Scoring method updated. CSR Electrical entered the top 5, up from #6. Eco Shine returned to the top 5, up from #7. EFS Solar returned to the list at #7. Lightforce Solar returned to the list at #10.
- Jun 2026
2E Electrical entered the top 5 at #2. Eco Shine left the top 5, down to #7. Ecosmart left the top 5, down to #10. CSR Electrical, MV Solar & Electrical and Go Green Solar entered the list.
- Apr 2026
Scoring method updated. Ecosmart entered the top 5, up from #6. Lightforce Solar left the top 5, down to #6.
- Mar 2026
First check. Harrisons Solar #1.
How are the top solar installers in Hamilton chosen? expand_more
We build this page from Google Maps results for solar installers in Hamilton. Each one is scored on its public rating and review record. Businesses outside the area, or whose reviews describe a different line of work, are left out, and a business whose main Google category is a different trade is held back until a person has checked what it does. A business whose website no longer resolves and that has had no Google review for six months is treated as dormant and left off the page until either changes. Every category and city is rechecked on a rolling cycle, about every two to three months. A location with a subscribing business is rechecked every month, and the whole page updates with it. See how we rank for the full method.
What does a business subscription offer? expand_more
No business can pay for a place in these rankings. Claiming and verifying a listing is free. It adds a phone number to the card and a small trust bonus (+3 points) to its score, for confirming a real operator stands behind the listing. The owner also gets a dashboard showing how their score is made up. A paid subscription provides an enhanced card with more ways to reach the business, including a website link and a detailed profile page. It also refreshes this page monthly and adds ranking history and competitor analysis to the owner's dashboard. The subscription adds nothing to the score. Claim your listing or see what a subscription includes.
Why isn't my business listed? expand_more
We build this page from Google Maps results for solar installers in Hamilton. The usual reasons for missing out are a Google Business category that does not match, too few reviews to score near the top, or an address outside the area we cover. Sometimes we miss a business that should be here. Check where you rank first. If you are not there and think you should be, get in touch.