Why Direct Installers Hate 'Margin Games' Being Exposed

The short answer: direct solar installers in New Zealand often mark up panels, inverters, and batteries by 30% to 100% above wholesale, then bundle hardware and labour into a single "system price" so you can't tell what you're paying for what. They hate this being exposed because the moment a homeowner sees the line-item breakdown, the negotiation power shifts back to where it should be: with you. This article pulls the curtain back on the three most common margin games played in the Kiwi solar market, shows you how to spot them in a quote, and gives you the questions that make a dodgy salesperson sweat.

This is a deliberately uncomfortable read for parts of our industry. We're writing it because we sit on the consumer's side of the table, full stop. If you'd rather skip the theory and just get vetted quotes from installers who don't play these games, jump to our 3 free quotes service. Otherwise, grab a coffee and let's have a yarn about how solar pricing actually works in Aotearoa.

What 'Margin Games' Actually Means for NZ Homeowners

A "margin game" is any pricing tactic that obscures what you're really paying for the kit versus what you're paying for the install, the sales overhead, and the company's profit. In an honest trade (think a plumber or electrician), you get a quote with labour at an hourly rate and parts at cost plus a stated markup. In solar, that transparency is the exception, not the rule.

The reason is structural. Most direct installers in New Zealand operate a commission-driven sales model, where the rep at your kitchen table earns a percentage of the total contract value. The bigger the system, the bigger their cheque. The more opaque the line items, the easier it is to slip in margin without you noticing.

None of this is illegal. The Commerce Commission's Fair Trading Act 1986 requires accurate representations, not itemised transparency. So it's down to you, the buyer, to know what to look for. That's what we're here for.

The Three Most Common Margin Games in NZ Solar

Game 1: The Bundled "System Price"

This is the big one. You ask for a quote, and you get a single number: "$18,500 for a 6.6 kW system, fully installed." No breakdown of panel cost, inverter cost, mounting hardware, labour, scaffolding, electrical compliance, or sales margin.

Why is this a problem? Because two installers can quote the exact same bundled price using completely different hardware. One might use premium N-type TOPCon panels and a Fronius inverter; the other might use generic mono panels and a no-name string inverter. Same headline price, wildly different value.

The fix is simple: ask for an itemised quote. If the installer refuses, that's your answer. Walk away.

Game 2: The Hardware Markup Spread

Here's where it gets interesting. Wholesale prices for solar hardware in New Zealand are reasonably well-known within the trade. A tier-1 mono panel lands at roughly $0.40 to $0.60 per watt wholesale. A 5 kW string inverter (Sungrow, Goodwe, Fronius Primo) lands somewhere between $1,800 and $3,500 wholesale depending on the brand and warranty terms.

A LiFePO4 battery (a 10 kWh BYD, Sungrow, or similar) wholesales in the $7,000 to $10,000 range. Yet we routinely see these same products listed in retail quotes at 50% to 100% above those figures, with no equivalent uplift in labour or service to justify it.

That spread, the gap between wholesale and what you're charged, is the margin game. It's not inherently wrong for an installer to make a profit on hardware (every retailer does). The problem is when the markup is hidden inside a bundled price and the homeowner has no idea they're paying twice the going wholesale rate for the exact same panel sitting on their neighbour's roof.

Game 3: The "Free" Upgrade Trick

This one's clever, and it works on the Eco-Conscious Family persona especially well. The salesperson says: "We'll throw in a free upgrade from 5 kW to 6.6 kW, no extra charge." Sounds great, right?

Here's what's actually happening. The original 5 kW quote was inflated by, say, $2,500 of margin. The "free" upgrade costs them maybe $800 in extra panels (six more 440W modules at wholesale). They still pocket $1,700 of margin, and you feel like you got a deal. You didn't. You got a system that's the right size at a price that was always padded.

The tell: any "free" or "today-only" upgrade offered at the kitchen table without a written, itemised comparison. Real discounts are documented. Sales theatre isn't.

How to Read a Solar Quote Like an Insider

A clean, transparent quote in New Zealand should give you at least the following line items. Print this list and tick them off against any quote you receive:

• Panel make, model, wattage, and quantity (e.g. "18 x Jinko Tiger Neo N-type 440W")
• Inverter make, model, and capacity (e.g. "Sungrow SH5.0RS, 5 kW hybrid")
• Battery make, model, and usable capacity if included (e.g. "BYD HVS 10.2 kWh, 9.2 kWh usable")
• Mounting and racking system (Clenergy, Schletter, etc.)
• Cabling, isolators, and electrical hardware as a separate line
• Labour and installation as a separate line, ideally with day rate and crew size
• Scaffolding if required (often a hidden extra)
• Electrical compliance, CoC, and lines company application fees (Vector, Orion, Powerco, etc.)
• GST shown clearly
• Warranty terms in writing for panels, inverter, battery, workmanship, and roof penetrations

If a quote arrives as a one-line "system price," that's a signal. It doesn't necessarily mean the installer is dodgy, plenty of legitimate ones default to bundled quotes because that's what the industry has trained them to do. But it means you should ask for the breakdown. A good installer will give it to you without flinching.

What This Means for You (By Persona)

For the ROI Pragmatist

You care about payback periods and dollars per kilowatt-hour offset. Margin games destroy your ROI maths directly. A $4,000 of hidden margin on a $20,000 system adds roughly 2 to 3 years to your payback period, depending on your power usage and the buy-back rate your retailer offers.

Run the numbers yourself using our Solar System Cost & ROI Calculator. Then compare the calculator's expected install cost against the quotes you've received. If your quotes are 25% to 40% higher than the calculator's estimate, you've likely got margin sitting on top.

For the Tech-Savvy Optimiser

You know your kit. You probably already know that a Fronius Gen24 isn't the same as a generic single-phase string inverter, and that a Tesla Powerwall 3 carries different lifecycle economics than a BYD HVS. Margin games are easier to spot for you because you can price-check the hardware yourself.

The trap for the Tech Optimiser is different: you might accept a higher markup because the installer is using premium kit, and assume that justifies the spread. Sometimes it does. Often it doesn't. Premium hardware should come with premium install standards (proper string sizing, MLPE where appropriate, clean cable management), not just a bigger invoice.

For the Eco-Conscious Family

You're probably most vulnerable to the "free upgrade" and "save the planet" framing. A salesperson who senses you care about sustainability will lean into emissions saved, energy independence, and kids' future, then quietly slip 40% margin into the contract. Your defence is the same itemised breakdown the Pragmatist uses.

The ethical case for solar doesn't require you to be overcharged. A fairly priced system saves the same carbon as an overpriced one. Don't let values be weaponised against your wallet.

What Installers Won't Tell You at the Kitchen Table

A few uncomfortable truths the better salespeople know but rarely volunteer:

Most "exclusive" hardware deals aren't exclusive. When an installer says "we're the only ones in NZ certified to install Brand X," check that against the manufacturer's website. Tier-1 panel and inverter brands almost always have multiple certified installers per region.

Cash discounts often signal margin headroom. If a rep offers you "$3,000 off if you sign today," that $3,000 was always sitting on the table. It tells you the original price had at least $3,000 of negotiable margin in it. Ask what other margin is still in there.

Finance partnerships sometimes pay the installer a kickback. When an installer steers you toward a specific finance product (not a bank green loan, but a private finance company), there's often a referral commission baked in. Check our 13-step installer vetting process for the questions that flush this out.

"Lifetime warranty" usually isn't. NZ solar warranties have specific terms: 25 years performance on panels, 10 to 12 years on inverters, 10 years on batteries, and typically 5 to 10 years on workmanship. Anyone claiming "lifetime" anything is using marketing language, not a contractual term. Get the actual warranty PDF before you sign.

Why We're Writing This (And Why the Industry Doesn't Like It)

NZ Solar Centre is a challenger brand. We don't install panels. We don't sell hardware. We make our money by matching homeowners with vetted installers who pass our standards, which means we're rewarded for getting the match right, not for maximising the contract value.

That puts us at odds with the parts of the industry that profit from opacity. We've had pushback from installers who don't want their bundled-price model challenged. We've also had quiet support from the good installers, the ones who already quote transparently and are frustrated that their dodgier competitors win deals with theatrics rather than value.

Our north star is our Trust Proxy promise: we sit on your side of the table, every time. We protect your data under the Privacy Act 2020, we don't sell your details, and we vet the installers we recommend using the same checklist any sensible homeowner would use if they had three weeks to do it themselves.

Frequently Asked Questions

Is it actually illegal for installers to mark up hardware without telling me?

No. Under the Fair Trading Act 1986, installers must not make misleading representations, but they're not legally required to disclose their wholesale costs or margin percentages. That's why transparency is a buyer-driven exercise: you have to ask.

What's a reasonable markup on solar hardware in NZ?

There's no official benchmark, but trade norms suggest 15% to 30% gross margin on hardware is fair when bundled with installation, design, compliance, and warranty support. Markups consistently above 50% on tier-1 kit, with no exceptional service to justify them, are where we'd start asking questions.

How do I find out wholesale prices?

You can't always, but you can triangulate. Manufacturer websites sometimes list RRPs. Trade-facing distributors occasionally publish indicative pricing. Comparing three or more itemised quotes for the same hardware will quickly show you the spread. Our free quotes service is designed to make that comparison easier.

Should I just buy panels online and find an installer to fit them?

Generally, no. Most reputable NZ installers won't warranty work on customer-supplied hardware because they can't verify the supply chain or handle warranty claims with the manufacturer. You also lose protections under the Consumer Guarantees Act if the install and supply are split. Cleaner path: find a transparent installer and negotiate on the itemised quote.

Is "cost per watt" a useful metric?

Yes, with caveats. Dividing total system cost by system size in watts gives you a rough $/W figure (e.g. a $18,500 6.6 kW system is roughly $2.80/W). It's a useful sanity check across quotes, but it doesn't account for hardware quality, inverter type, battery inclusion, or roof complexity. Use it as one data point, not the only one.

What's the single best question to ask a solar salesperson?

"Can you send me an itemised quote with each line of hardware, the labour separately, and the GST shown?" If they hesitate, deflect, or insist on giving you a bundled price only, you have your answer. Move on to the next quote.

Do all direct installers play margin games?

No. There are excellent, transparent installers across New Zealand who quote properly, explain their margins openly, and treat homeowners like adults. The problem isn't the trade as a whole, it's the high-pressure subset that gives the rest a bad name. Our vetting process is designed to filter for the good ones.

What if I've already signed a contract and now I'm worried I overpaid?

Check the cooling-off provisions in your contract. Door-to-door and unsolicited direct sales in NZ usually carry a 5-working-day cancellation right under the Fair Trading Act. If you signed at home after a kitchen-table pitch, you likely have options. If you signed at the installer's office or online after researching, the cooling-off right may not apply, but you can still ask for an itemised breakdown post-signing.

Where to Go From Here

Knowing the games is half the battle. The other half is applying that knowledge when the quotes land on your kitchen table.

If you want the full toolkit, work through these in order:

• Read the Solar Scam Checklist to spot the obvious red flags before they cost you.
• Run your numbers through the Solar ROI Calculator so you have an independent benchmark for what your system should cost.
• Review our 13-step vetting process so you know what we check on your behalf.
• Get three independent, itemised quotes through our free quotes service.

You don't need to be an industry insider to get a fair deal. You just need the right questions, the right benchmarks, and someone on your side of the table.