Best Solar Installers in New Plymouth

We assessed 12 solar installers in New Plymouth and ranked the top 5 on public rating quality, review volume and how recent the reviews are. The businesses listed below hold 278 Google reviews between them. No business can pay for a place in these rankings. Last updated 22 September 2026. How we rank

Top 5 Solar Installers in New Plymouth

The top 5 solar installers in New Plymouth are #1 Solar One, #2 Unity Electrical, #3 Solar Plus, #4 Tengo Electrical, and #5 Rapid Wire Electrical, ranked by Top5 Score.

  • 1

    Solar One

    ★ 5.0 63 reviews Score 154
    Highest
    5★ 63

    Solar One coordinates complete solar installations covering panels, inverters, and battery systems, and takes the time to design a setup around each household's actual usage rather than pushing the most expensive option.

    9 Saltash Street, Upper Vogeltown, New Plymouth

    Call 0800 376 527 Map Is this your business?
  • 2

    Unity Electrical

    ★ 5.0 39 reviews Score 148
    6.2 behind
    5★ 39

    Unity Electrical covers new solar array installations, battery retrofits, inverter replacements, and grid feed-in applications, making them a practical single point of contact for most solar projects.

    Call 022 625 9905 Map Is this your business?
  • 3

    Solar Plus Power

    ★ 5.0 25 reviews Score 142
    11.9 behind
    5★ 25

    Solar Plus gets households through full solar and battery installations with a structured handover that includes a personal walkthrough of the monitoring app and how the system works day to day.

    14/55 Rimu Street, Strandon, New Plymouth

    Call 027 444 1557 Map Is this your business?
  • 4

    Tengo Electrical

    ★ 5.0 17 reviews Score 137
    16.8 behind
    5★ 17

    Tengo Electrical gets through a mixed list of residential jobs, from outdoor spa wiring and extra power outlets to security lights, rangehood replacements, and ethernet runs, without fuss or mess.

    314 Saint Aubyn Street, New Plymouth Central, New Plymouth

    Call 027 376 6911 Map Is this your business?
  • 5

    Rapid Wire Electrical

    ★ 5.0 53 reviews Score 134
    19.6 behind
    5★ 52 4★ 1

    Rapid Wire Electrical delivers solar installations where the panel layout, wiring neatness, and system handover are all treated as part of the job, not afterthoughts.

    125 Gill Street, New Plymouth Central, New Plymouth

    Call 06 757 9900 Map Is this your business?

More rankings

More services in New Plymouth 12 links
Solar Installers elsewhere in New Zealand 4 links

Before you hire a solar installer in New Plymouth

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.

The questions below are drawn from 135 customer reviews collected for this page.

What does a solar installation typically cost in New Zealand?

A standard 5kW to 6.6kW residential system costs between $10,000 and $14,000 installed, covering panels, inverter, and labour. Battery storage adds significantly to that figure, often pushing total costs toward $20,000 or beyond depending on capacity.

Roof type, shading, and inverter brand all affect the final price, with complex or high-pitch roofs requiring additional labour. There is no government rebate for residential solar in New Zealand as of 2025, so you pay the full amount out of pocket or through financing.

Full solar installation cost guide, with sources

How do I check if a solar installer is properly accredited?

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) website before signing any contract. Beyond that legal minimum, look for membership with the Sustainable Energy Association of New Zealand (SEANZ), which requires members to meet competency and conduct standards specific to the solar industry.

Asking whether an installer holds SolarCert certification is a practical way to gauge specialist solar PV knowledge above the basic electrician licence. Holding both EWRB registration and a recognised credential like SolarCert reduces the risk of installation faults and helps ensure your system meets your local lines company's grid connection requirements.

How accurate are the payback period and savings estimates I'm being given?

A realistic payback period for a New Zealand residential solar system sits between 8 and 12 years, though adding battery storage can push that to 15 years or more given current battery costs. The key variable is self-consumption: import rates of 28 to 35 cents per kWh are far more valuable than export buy-back rates of around 8 to 17 cents, so estimates built on high export assumptions will be optimistic.

One installer in the reviews specifically noted that their generation figures were deliberately conservative, and the customer confirmed actual output exceeded the estimate, which is the right approach. Ask any installer to show you the self-consumption ratio and export assumptions behind their savings figure, and cross-check those against your actual daily usage pattern and whether anyone is home during daylight hours.

What are the warning signs of a solar installer you shouldn't hire?
  • –No structured handover of the monitoring app after installation, leaving you unable to track system performance or identify faults early.
  • –Vague or uncommitted timelines at the quoting stage, with no clear schedule for installation once you sign.
  • –Sales contact is responsive but the installation crew does not match that standard in knowledge or communication.
  • –No clear answer on who handles post-installation warranty claims, particularly if the installer is acting as a reseller rather than the system designer.
  • –Unwillingness to disclose site constraints upfront, such as roof warranty implications from mounting methods or shading issues that affect real-world output.
  • –Difficult to reach after the job is done, with no evidence of remote monitoring or proactive follow-up if the system trips or underperforms.

About 3 in 10 solar one-star reviews are about what happened after the install

What should you ask before hiring a solar installer?
  • –Ask whether the installer holds a current Electrical Workers Registration Board (EWRB) licence and can supply their registration number for you to verify online.
  • –Ask what self-consumption ratio and export buy-back rate underpin the savings estimate, and whether those figures are based on your actual usage data or a generic template.
  • –Confirm whether app setup, monitoring walkthrough, and commissioning support are included in the quoted price or charged separately.
  • –Ask specifically who handles warranty claims after installation, whether that is the installer directly or a third-party supplier, and what the response time commitment is.
  • –Clarify the difference between the workmanship warranty the installer provides and the manufacturer warranties on panels, inverter, and battery, including what happens if the installer ceases trading.
  • –Ask whether the mounting system used will void your roof warranty, as at least one reviewer specifically noted this as a point of differentiation between competing quotes.
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About this ranking

What the 10 solar installers listed above hold, at the 22 September 2026 check.

63
reviews held by the #1 ranked business
53
reviews held by the #5 ranked business
4.8
lowest rating among the 10 listed
0%
of their 278 reviews are one-star
How are the top solar installers in New Plymouth chosen?

We build this page from Google Maps results for solar installers in New Plymouth. Each one is scored on its public rating and review record, using the same published method on every page. Businesses outside the area, or whose reviews describe a different line of work, are left out. Every category and city is rechecked on a rolling cycle, about every two to three months. See how we rank for how rankings are made and who is left out. On specialist pages like this one, a business's reviews count in proportion to how many of them are about solar installers, so a business mostly reviewed for other work cannot win on review volume alone. See the words we look for.

Are you a solar installer in New Plymouth?

No business can pay for a place in these rankings. Claiming and verifying your listing is free: it adds a small trust bonus (+3 points) to your score, for confirming a real operator stands behind the listing, and gives you a dashboard showing how your score is made up. A paid subscription adds a website link, a profile page and your ranking history. Claim your listing or see what a subscription includes.

Not listed? The usual reasons 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. Check where you rank first, and if you think we missed you, get in touch.

How far is each one from you?

Type your suburb or use your location, and we'll show the distance on every card. The order stays the same.