Home Solar and Batteries
Reduce your electricity bill and have power when the grid goes down.
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Switching to Solar Has Never Been Easier
At Ecoefficient, we handle everything, from your tailored quote to final installation. We use industry-leading products and panels that come with a 30-year warranty, ensuring lasting performance. Every system comes with lifetime local support and a unique 10-year workmanship guarantee, giving you complete peace of mind.
Solar made simple, by a team you can trust.
How Do Solar Panels Work?
Solar panels capture sunlight and convert it into electricity through their solar cells. This energy then passes through an inverter, turning it into usable power for your home or business. Any excess can be stored in a battery or exported back to the grid.
Elements of the Solar Power Eco System
Sun
The free and infinite, renewable fuel that is the sun!
Solar Panels
Convert sunlight into clean green DC electricity.
Inverter
Converts DC electricity into usable AC electricity.
Grid
Extra power goes to the grid and you get credited.
Battery
Save your solar energy for night-time or outages.
EV Charger
Charge your electric vehicle at home.
The Ecoefficient Way - Go Solar In 4 Easy Steps
We make switching to solar simple, stress-free, and fully supported from start to finish.
1. In-Home Assessment
We visit your home to understand your energy habits, appliances, and roof layout so we can tailor a system to your lifestyle.
2. Personalised Quote
From here, we will come back to you with a quote (including an estimate of savings you’ll make on your power bill) and answer any questions that you may have.
3 Hassle-Free Installation
Once you’ve approved the quote, we will organise the entire installation process with our highly experienced and qualified electricians.
4. Ongoing Support
We’ll keep you fully informed with clear communication throughout the entire process, including lifetime support after the install.
Why You Should Go Solar?
Reduce your power bill by up to 100%
Gain independence from the power companies
Get around a 10% return on your investment
Have power available to you in a power cut
Reduce your carbon footprint with a completely renewable source of energy
Add value to your home (around 1.25% on the initial investment)
Green Loans
You can finance your solar system with 0–1% interest loans through most major banks.
It’s Simple:
- Provide your bank with our quote
- Apply for the loan
- Once approved, we’ll handle the rest.
As SEANZ members, we meet the requirements banks need, giving you access to low-interest finance with confidence.
What Others Are Saying
Frequently Asked Questions
Getting Started With Solar
Why should I go solar?
The main reasons are to reduce your power-bill, have power in an outage, add value to your home all whilst reducing your carbon footprint.
How much does solar and batteries cost for an average home?
This varies significantly, anywhere from $10,000-$35,000 for an average home
How many panels do I need?
This varies for each property, but an average residential home needs around 12x panels without a battery and 18x panels with a battery.
Do I need a solar battery?
You don’t need a battery in order for your solar system to function and to save you money. However, a battery does save you more money on your power-bill and it gives your home power in an outage. Most homes will benefit from an 8-16kWh battery system – it all depends on the budget available for you to invest.
Can I add more panels or batteries later on?
Definitely, we can design the system so that you can easily extend down the track.
Will solar help save me money?
Yes, we aim to reduce your power bill by around 40-50% with solar alone, or up to 90% with solar and a battery. We cannot guarantee this saving, as it all depends on your power usage and habits.
Installation Process
How long does it take for your team to install?
Around 1-3 days on average.
Do we need lines consent and will you organise this?
Yes, you will need lines consent as part of our installation process we handle everything for you start to finish!
How does the power get exported to the grid?
You require an import/export meter which your power company will provide for you. This counts the amount of power that you will import/export. The exported power is credited to you on your power bill. In New Zealand, this is the ‘on-grid’ compliance requirement.
How much do I get paid for exported power?
This varies for each person, but the average is 12-15c per kWh currently, however new legislation mid-2026 will require power companies to pay much more back to their customers during peak export times.
Product Lifespan & Quality
How long do panels last for?
Our panels come with a 30-year performance warranty. At 30 years they are still producing at over 80% of their original efficiency, so their life expectancy could be 40 years or more. Most of our inverters and batteries come with a 10-year warranty and their life expectancy is around 15 years.
What does a battery actually do?
Yes, you will need lines consent as part of our installation process we handle everything for you start to finish!
How much does a battery cost?
We only install premium lithium-ion batteries, each backed by a 10-year warranty. Our most popular choice among customers is the SigEnergy modular battery, which comes in a variety of sizes to suit different households and energy requirements. We also offer the Tesla Powerwall 3, providing 13.5kWh of storage and a strong option for many homes.
Performance & Monitoring
How do I monitor my solar system?
We ensure that every system comes with some form of app based monitoring, so we will talk to you about which option is best for your system.
Do your solar panels heat hot water?
Short answer, yes. However, we do not provide or recommend solar hot water tubes/panels. Heating water directly on your roof is now considered old technology. There is a large amount of maintenance required for solar hot water and in winter it sometimes leaves you with cold water. We provide solar panels that produce electricity, and we divert that electricity to your hot water cylinder. This then powers the element within your cylinder, meaning that your hot water is now powered by solar power.
What happens when the power goes out?
If you have a solar battery through us, then your essential appliances in your home will work in a power outage if that is what we have designed. If you don’t have a solar battery, then your solar system will turn off and you will be in an outage like everyone else.
Future Expansion
Can I add a battery later?
Of course, if you’d like to add a battery in the future, we can discuss your options and ensure your system is set up correctly for the option in the future.
Can I extend my system in future?
Yes. You can easily add more solar panels and batteries in the future as your energy needs change.
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