New Plymouth homeowners are increasingly pairing rooftop solar with home batteries to ride out Taranaki's grid outages and cut evening power costs. We researched and verified the installers below against real Google reviews, SEANZ and EWRB credentials, and confirmed battery installation experience.
This page highlights the Top 5 battery storage installers in New Plymouth, based on independent research into reputation, accreditation, service quality and overall reliability.
The top 5 battery storage installers in New Plymouth are 1. Solar One, 2. EFS Solar, 3. Solar Plus Power, 4. Taranaki Solar, 5. Sunny Solar. Below we explain why each made the list, compare them at a glance, and share how to choose.
This paid placement sits above the editorial Top 5 and is clearly labelled. It does not influence the rankings below.
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Solar One is a 100% Taranaki owned and operated installer based in Upper Vogeltown, New Plymouth, with the strongest independently verified review record of any local operator. They install Sigenergy SigenStor battery systems and hold both Master Electricians and SEANZ membership.
EFS Solar runs a dedicated Taranaki service team covering New Plymouth to Stratford and Hawera, with all electrical work certified by EWRB-registered electricians. They install Energizer and Sigenergy battery systems.
Solar Plus Power is based on Rimu Street in Strandon, New Plymouth, and explicitly delivers solar and battery systems for homes across Taranaki. Their Google Business Profile shows a strong, genuinely local review record.
Taranaki Solar is a 100% Taranaki owned and operated installer based in Fitzroy, New Plymouth, offering battery systems from multiple brands including Tesla Powerwall, BYD, Sigenergy and Goodwe. They are a SEANZ member.
Sunny Solar operates from Waiwhakaiho, New Plymouth, and offers battery backup installation alongside solar and EV charging, working with SEANZ-registered partner KES Electrical.
A quick comparison of our Top 5 picks. Select up to 3 businesses above to compare their strengths side by side.
| Battery Storage Installer | Best for |
|---|---|
| Solar One | Highest-rated local battery installer |
| EFS Solar | EWRB-licensed battery installation with regional coverage |
| Solar Plus Power | Locally based residential battery systems |
| Taranaki Solar | Choice of battery brands from a local specialist |
| Sunny Solar | Newer local option worth a comparison quote |
Independent, editorial, and reviewed regularly.
TopChoice rankings are editorially curated by our New Zealand team and reviewed periodically. We don't host our own reviews. Our shortlists draw on public reputation signals from Google and other platforms, alongside our own research into each battery storage installer. We weigh up a combination of:
We don't accept payment in exchange for a place in the Top 5. Featured placements are separate and always clearly labelled. Rankings may change over time as businesses evolve.
Correct sizing matters more than brand. A good installer will size your battery around your actual household usage pattern, not just how much roof space you have for solar, and should be able to explain the trade-off between a smaller battery for evening peak-shaving and a larger one for genuine backup. Look for SEANZ membership and EWRB-registered electricians carrying out the electrical work; both are checkable credentials, not just marketing claims.
Ask specifically whether the proposed system supports backup power during an outage, since not every grid-tied battery installation is wired for this by default and it usually needs a specific inverter and switchboard setup. Also get the warranty terms in writing: most quality batteries carry a 10-year manufacturer warranty, and the installer's own workmanship warranty should be separate and clearly stated.
A residential battery in New Plymouth typically costs from around $8,000 to $18,000+ installed, depending on capacity, brand and whether it's paired with new or existing solar. Get quotes from at least two local installers to compare, since pricing varies with battery size and installation complexity.
No, a battery can be installed on its own and charged from the grid during off-peak hours, though most New Plymouth households pair batteries with solar to store excess daytime generation for evening use, which gives the best return.
Not automatically. Standard grid-tied battery installations are designed to shift and store energy but may shut down along with the grid during an outage for safety reasons. If backup power during an outage matters to you, tell your installer up front so they design the system with the right inverter and switchboard configuration to support it.
Most reputable battery brands carry a manufacturer warranty of around 10 years, though the exact terms (cycle limits, capacity retention) vary by brand. Installers also typically provide a separate workmanship warranty on the installation itself, so ask for both in writing before you commit.
It depends on your power usage pattern, existing solar setup and how much you value backup resilience during outages. A battery generally pays off fastest for households with solar and high evening power use; a local installer can model the numbers against your actual power bills before you decide.
Editorial disclosure: TopChoice is an independent editorial platform. Some pages may include clearly labelled featured placements for additional visibility. Featured placements do not influence rankings within our Top 5 lists.
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