Solar on a rental sounds simple until you notice the awkward fact at its heart: the person who pays for the system — the landlord — usually isn’t the person who saves on the power bill — the tenant. Economists call this the “split incentive”, and it’s the single biggest reason solar is far less common on rentals than on owner-occupied homes, even though the roofs are identical. If you’re a landlord wondering whether it’s worth it, or a tenant wishing your rental had panels, here’s how the problem actually works, the models that get around it, and one myth worth ignoring.
The split incentive, explained
In an owner-occupied home, solar is clean: you pay for the panels, you use the power, you pocket the savings. The cost and the benefit sit with the same person.
A rental breaks that link. The landlord owns the roof and would pay the $12,000–$16,000 for a system. But it’s the tenant who uses the electricity during the day, so it’s the tenant who sees the lower bill. The landlord spends; the tenant benefits. Unless something bridges that gap, a landlord has little direct reason to install solar — and that’s exactly why most don’t.
It isn’t that solar on rentals fails to pay. It’s that the payment and the payoff land on different people.
The models that solve it
The encouraging part is that the split incentive is a structuring problem, and there are several established ways to close it.
Share the saving through rent
The most common approach: the landlord installs solar and raises the rent by an amount smaller than the tenant’s expected power-bill saving. The tenant comes out ahead on total cost of living, and the landlord recovers the investment through the higher rent. Both win — provided the rent increase is set honestly below the saving, and the tenant will be there long enough to benefit.
Landlord keeps the export income
Even when the tenant captures the daytime savings, the system still exports surplus power to the grid. Some arrangements direct that export credit to the landlord, giving them a direct return while the tenant enjoys cheaper daytime power. It’s a smaller sum, but it aligns both sides.
Solar as a letting advantage
In a competitive rental market, a home with solar and lower running costs is simply more attractive — it can let faster, draw better tenants, and cut vacancy. Treated as a property improvement rather than a power project, solar can pay back partly through occupancy and tenant quality, plus the lift to the property’s capital value.
Third-party ownership models
In some setups a provider owns the panels and sells the power to the occupant, taking the up-front cost off the landlord entirely. These are less common in New Zealand’s residential market and the terms need careful reading, but they exist as a way to remove the capital question altogether.
The myth worth ignoring
A persistent piece of confusion is that solar is, or soon will be, required on rentals under the Healthy Homes standards. It isn’t. New Zealand’s Healthy Homes standards cover heating, insulation, ventilation, moisture, and draught-stopping — not electricity generation. Solar is entirely optional on a rental. So don’t let a sales pitch imply you’re about to breach a regulation; there’s no solar mandate to comply with. Decide on the economics, not on an invented rule.
What this means if you’re a landlord
Solar on a rental can absolutely make sense — but only if you structure it so the cost and the benefit don’t sit on opposite sides of the tenancy. That means deciding up front how you’ll recover the investment: through a fair rent adjustment, the export income, faster letting, capital value, or some combination. Run it as a property-improvement decision with a clear recovery mechanism and the split incentive stops being a dealbreaker. Install panels with no plan for who captures the saving, and you’ve simply spent money to lower your tenant’s bills.
What this means if you’re a tenant
You can’t install panels on a house you don’t own, but you’re not powerless. If you’d value solar, raise it with your landlord as a genuine win-win: lower running costs make the home more liveable and more attractive, and a modest rent adjustment can still leave you better off overall. Frame it around the numbers — the saving versus the rent change — and a switched-on landlord may well listen, especially as power prices climb.
The bottom line
Solar on rentals isn’t broken, just awkward: the landlord pays and the tenant saves, so it only works when the deal is structured to share the benefit. Solve that — fairly and explicitly — and a rental’s roof is as good a solar site as any owner-occupied one. Ignore the “it’ll be mandatory soon” myth, focus on who captures which saving, and the awkwardness becomes very manageable.
Landlord weighing it up, or a tenant wanting to make the case? Our free assessment models the savings and the realistic payback for the specific property, so the conversation can start from real numbers instead of a sales pitch.
Sources: Tenancy Services — Healthy Homes standards (no solar requirement); cost, saving, and export ranges per EECA and the Electricity Authority. Figures are indicative and vary by property and tenancy.