Owner GUIDE
Thinking about going solar?
At TEG, we call it like we see it.
No fluff, no sales talk — just honest advice and straight-up facts you can count on.
Here’s what you should know.
Power prices keep going up — no surprises there. Chances are, you’ve felt it too.
Maybe you’ve switched power companies a couple of times, tried different plans, or changed when and how you use power — all just to keep those bills in check.
Like many Kiwis, you might be looking into solar now.
And yes — the right solar setup, designed well and installed properly, can help bring your power bills down. But not every roof’s the right fit, and not every company stands behind their work with a performance guarantee.
That’s why we’ve put together this guide — honest, practical advice, in plain English.
We’ll show you what to look for, what to avoid, and how to make sure the system you choose actually delivers the savings you’re hoping for.
Because with solar, you don’t often get a second crack at it. That’s where we come in — to help you get it right the first time.
Step 1 — Provide the data
Your real data drives your design.
Every home’s different, so we’ll need a few key bits from you to get the design just right and make sure everything stacks up.
Here’s what we’re after:
- A recent power bill — ideally covering the last 12 months
- Your half-hourly usage data from the past year (CSV format)
Most power companies let you download this from their website or app — or you can just ask them by email.
New build or not sure how to get hold of it?
Click the WhatsApp button in the bottom right corner — our solar experts are on hand to help in real time.
Your roof’s unique build drives final costs.
Different roofs need different mounting gear, installation methods, and H&S requirements, so costs can vary.
Here’s what we’re after:
- A roof plan is needed if it’s a new build or still under construction.
You can usually download it from your local council’s website — or ask your builder, architect, or the council directly by email.
Not sure how to get hold of it?
Click the WhatsApp button in the bottom right corner — our solar experts are on hand to help in real time.
Why does this matter?
Getting started is simple, we’re here to guide you, but without real data, we can’t move forward.
Every home’s different, so without your actual usage info, designing your solar system is just guesswork. That means everything that follows could be a waste of your time — and could lead to making the wrong call on your investment.
Think about it:
- What are numbers like payback time, ROI and total savings actually based on? And how reliable are they?
- What’s the real difference between the brands, types, and sizes of solar panels, inverters, and batteries?
- How many panels do you actually need? Is the layout spot on — and is it really delivering the power you should be getting?
- Do you even need a battery? If so, what size? And when’s the right time to get one?
If you can’t measure the risk, those “great deals” could end up costing you way more than you thought.
That’s not how we roll.
We’re not in this for quick wins. We don’t risk our reputation on systems we can’t stand behind. Every system we put our name to is properly modelled, independently checked, and designed to last. Because with solar, you don’t often get a second crack at it.
It’s the foundation for a system that’s built to New Zealand standards — properly, and for the long run.
Here’s what that means for you:
- Fully compliant with AS/NZS 5033 and AS/NZS 4777.
- Designed to meet New Zealand’s health and safety regulations.
- Backed by one of the country’s leading insurers.
- Includes annual performance guarantees — measurable, not just promised.
- Supported by local experts, for the lifetime of your system.
We build it like it’s going on our own roof — done properly, or not at all.
Step 2 – Check budget & book feasibility
See what fits your home and budget.
Enter your address, annual usage and current rates.
Our system runs the numbers and gives you a clear, upfront estimate — install included.
If it looks good for your budget, the next step is simple:
- A feasibility report with all the insights you need to make the right call.
No pushy sales. No guesswork.
Just smart data from trusted local sources — weather, product specs, real installs and installer expertise — all working together to give you results you can trust.
Not sure how to use it?
Click the WhatsApp button in the bottom right corner — our solar experts are on hand to help in real time.
Book your feasibility check.
A feasibility check gives you a clear view of what works best for your place — from system design through to install details, maintenance and return on investment.
Your feasibility report then becomes your go‑to guide when it’s time to make the call.
- Data Analysis – Power bill and usage reviewed with real data to design the right system, with all key details made clear.
- Design & Verification – Initial electrical and system design, checked on site for feasibility.
- Roof Check – On‑site inspection of the roof and surroundings to confirm feasibility.
Need a hand with it?
Click the WhatsApp button in the bottom right corner — our solar experts are on hand to help in real time.
Design & Verification
Initial electrical and system design, checked on site for feasibility.
Roof Check
On‑site inspection of the roof and surroundings to confirm feasibility.
Step 2 – Check Feasibility & Confirm Scope
See what solar could look like — for your home.
Enter your address, annual usage and current rates.
Our system runs the numbers and shows you a clear, upfront estimate — including install.
- If it fits your budget, the next step is easy: A feasibility report that gives you the insights to make the right call.
No hard sell. No guesswork. Just smart data, from trusted local sources — weather, product specs, real installs, and installer expertise — all working together to give you a result you can rely on.
Not sure how to use it?
Click the WhatsApp button in the bottom right corner — our solar experts are on hand to help in real time.
Your roof’s unique build drives final costs.
Different roofs need different mounting gear, installation methods, and H&S requirements, so costs can vary.
Here’s what we’re after:
- A roof plan is needed if it’s a new build or still under construction.
You can usually download it from your local council’s website — or ask your builder, architect, or the council directly by email.
Not sure how to get hold of it?
Click the WhatsApp button in the bottom right corner — our solar experts are on hand to help in real time.
Engineered for performance.
- Find the light.
We start by understanding how the sun moves across your roof — hour by hour, season by season — and place each panel where it matters most.
- Clear the path.
We quietly work around anything that blocks the light — vents, skylights, chimneys, aerials, heat pumps, nearby trees, even tall buildings.
So your system runs beautifully, without compromise.
- Precision Placement
We create a custom layout based on how you use energy and the unique shape of your roof — so every panel is placed exactly where it should be.
- Precision Placement
We create a custom layout based on how you use energy and the unique shape of your roof — so every panel is placed exactly where it should be.
Impressive
Everything’s ready.
I value how TEG works, clear, thoughtful, and built around real needs.
This isn’t just a system on the roof, it’s a choice made on trust, care, and long-term value.
Can’t wait to see it come to life.