Find trusted, independently reviewed renewable energy and energy-efficiency installers across New Zealand. TopChoice curates a Top 5 list in each service, so you can compare a short list of proven local providers instead of trawling through dozens of options.
From heat pumps to solar, EV chargers, battery storage and insulation, explore a service below, or jump straight to the recommendations in your city.
New Zealand households are looking at renewable energy and energy-efficiency upgrades for a simple reason: power bills keep climbing and older homes are often cold, damp and expensive to heat. A heat pump, solar system, home battery, insulation upgrade or double glazing can each cut ongoing running costs and make a home more comfortable, and increasingly households are combining more than one, for example pairing solar panels with a battery to use more of the power they generate themselves.
This is a genuinely fast-moving area. Rules around solar export limits, electricity buy-back rates and EV charging infrastructure keep changing, so it pays to work with an installer who is currently registered and up to date, not just cheap. See "Government Support & Rules to Know" below for what's actually current in 2026.
Choose a service to see our curated Top 5 local providers.
Heat pump supply, installation, servicing and ducted systems.
View Top 5 heat pump installers →Solar PV design, supply and installation for homes and businesses.
View Top 5 in Christchurch →Home and workplace EV charge point supply and installation.
Coming soonHome battery storage supply and installation, often paired with solar.
Coming soonCeiling, underfloor and wall insulation for warmer, drier homes.
Coming soonDouble glazing and window retrofits for warmth and noise reduction.
Coming soonA quick guide to what's actually involved, and what's genuinely current in New Zealand right now.
Heat pumps are New Zealand's most common home heating upgrade, using a compressor to move heat rather than generate it directly, which makes them far more efficient than a standard electric heater. Eligible households can get up to $3,450 off a heat pump through EECA's Warmer Kiwi Homes programme.
Rooftop solar converts sunlight into electricity to power a home directly, exporting any surplus back to the grid. From July 2026, major retailers must offer time-of-use pricing and rebates for electricity exported at peak times, making solar more valuable than it used to be.
A dedicated home EV charger installs faster and more safely than charging from a standard wall socket. New Zealand's Clean Car Discount purchase rebate for EVs ended in December 2023, so the case for going electric now rests on running cost savings rather than a purchase subsidy.
Home batteries store electricity, most often from solar panels, so it can be used in the evening instead of exported for a lower rate during the day. They're commonly installed alongside a new or existing solar system rather than on their own.
Ceiling and underfloor insulation is one of the most cost-effective ways to make an older New Zealand home warmer and cheaper to heat. Homes built before 2008 in lower to middle income areas may qualify for 50 to 90% off insulation through EECA's Warmer Kiwi Homes programme.
Double glazing replaces single-pane windows with two panes and a sealed air gap, reducing heat loss and outside noise. It's a bigger job than insulation or a heat pump, so most homeowners get it done room by room or alongside a wider renovation.
Insulation and heat pumps: EECA's Warmer Kiwi Homes programme funds 50-90% off insulation and heating for homes built before 2008 in lower to middle income areas, or where someone holds a Community Services Card or SuperGold Combo Card. An online eligibility check takes a few minutes.
Solar: most residential rooftop solar under 40m² per roof no longer needs building consent, and network operators are moving to higher export limits and mandatory time-of-use buy-back pricing through 2026. See the Electricity Authority's solar power guidance for what applies to your property.
EV chargers: there is currently no government purchase or installation rebate for EVs or home chargers in New Zealand, the Clean Car Discount scheme ended in December 2023. Budget for the full cost and weigh it against running cost savings over time.
Rules and grant amounts change, always confirm current eligibility and rates directly with EECA, the Electricity Authority, or your installer before committing.
Jump straight to the recommended local renewable energy providers in your city.
TopChoice recommendations are editorially curated by our New Zealand team. Rather than listing every business that pays to appear, we research each local market and shortlist only the installers who consistently stand out.
We don't host our own reviews. Instead, we draw on public reputation signals from Google and other platforms, alongside the wider research that goes into each list. Every business is assessed using a consistent review framework that considers factors such as:
Every Top 5 list is reviewed periodically and can change over time as businesses grow, improve, or fall short, so the recommendations stay current and worth trusting.
TopChoice takes a curated approach by limiting each service to just five local businesses. This avoids the clutter common in open directories and makes it far easier to compare your options without endless scrolling.
Renewable energy and energy-efficiency upgrades are a significant investment, and it's hard to know who to trust. We do the legwork, so you can shortlist quickly and reach out with confidence. Every provider on our lists is independent, local, and chosen on merit.
TopChoice is an independent New Zealand directory that publishes curated Top 5 lists of trusted local businesses, so you can compare a short list of proven providers rather than dozens of listings.
We currently cover heat pump installers nationwide, with solar panel installers now live in Christchurch. EV charger installers, battery storage installers, insulation installers and double glazing installers are being added as they're researched and reviewed.
Each list is editorially curated using a consistent framework, public customer reviews and feedback, consistency of service quality, range of services offered, local experience and reputation, and professional standards. We don't host our own reviews; rankings reflect real-world reputation.
No. TopChoice is free to browse. You contact businesses directly, we're not an intermediary and don't take a booking fee or commission.
We currently cover Auckland, Christchurch, Wellington, Hamilton, Tauranga and Dunedin, with more locations being added over time.
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