Meridian Energy Solar Buy-Back Plans Explained

Meridian Energy pays a flat solar buy-back rate for the power your panels export to the grid, currently sitting around 17 cents per kWh on its standard solar plan (always confirm the live number, because retailers adjust these without much fanfare). That's a flat rate: you get the same cents for every unit you export, whether it's a blazing January noon or a grey July afternoon. For a home without a battery, that simplicity is genuinely valuable, and it's the single biggest reason Meridian remains one of the more solar-friendly retailers in Aotearoa.

Meridian is also New Zealand's largest generator of renewable electricity, running entirely on hydro and wind, so the solar pitch fits the brand. But brand fit doesn't pay your power bill. What matters is whether the maths works on your roof, and that depends heavily on how much of your own generation you use at home versus how much you push back to the grid.

What "flat buy-back" actually means for your bill

Every kilowatt-hour your solar system produces goes one of two ways. Either you use it in the house the moment it's made (running the dishwasher, charging the EV, heating water), or you don't need it right then and it flows out to the grid for the retailer to buy.

The power you use yourself is worth the full retail rate you'd otherwise have paid, which in 2025 sits somewhere around 28 to 35 cents per kWh for most households depending on your plan and network, per pricing published across the major retailers. The power you export is only worth the buy-back rate.

So with Meridian's flat rate of roughly 17c, every unit you self-consume is worth nearly double what an exported unit is worth. That gap is the entire game. We unpack the full picture of how export rates stack up nationally over here: our complete rundown of solar tariffs and retailers.

Flat versus time-of-use: the trade-off nobody explains properly

Here's the bit installers and sales reps tend to gloss over. A flat buy-back rate is not automatically the best deal. Some retailers offer a time-of-use export rate, paying you a big premium during evening peak hours (often 7am to 9am and 5pm to 9pm) and very little the rest of the day.

Octopus Energy and Ecotricity both run plans built around exactly this idea. If you've got a battery that can hold your daytime solar and dump it to the grid at 5pm, those peak-export plans can pay far more than Meridian's flat 17c. We've broken down how those work in detail: OctopusPeaker versus OctopusFlexi and Ecotricity's Resi-Flex peak export plan.

The catch: time-of-use export rates only shine if you can shift your export into those peak windows. A standard panel-only home generates the most at midday, smack in the middle of the low-rate export period. You can't move the sun. So a flat rate often beats a fancy time-of-use rate for a home with no battery, precisely because a panel-only system exports when it wants to, not when it's most valuable.

Why Meridian's flat rate suits a battery-free home

If you've got panels and no battery, your export profile is dictated entirely by the sun and your daytime habits. You'll typically export a large slug of power in the middle of the day, exactly when time-of-use plans pay the least.

A flat rate sidesteps that problem completely. You get the same 17c at noon as you would at 6pm, so you're never penalised for generating at the "wrong" time. There's no clever scheduling to do, no battery to babysit, and no app to obsess over.

This is the genuinely useful insight: for a panel-only household, a higher flat rate usually beats a higher peak rate, because almost none of your export lands in the peak window anyway. Run the numbers before you get seduced by a headline peak figure of 30c or more. If only 10% of your export hits the peak window, that 30c is doing very little work.

A worked example: a Christchurch home on the Orion network

Picture a three-bedroom brick-and-tile place in Halswell with a 6kW system facing roughly north. In Canterbury, with Orion as the local lines company, a system that size produces somewhere around 8,500 to 9,000 kWh a year, using EECA and NIWA solar irradiance figures for the region as a guide.

Say the household is out at work most weekdays and self-consumes about 35% of what it generates. That's fairly typical for a family that isn't home during the day.

• Total generation: roughly 8,700 kWh/year
• Self-consumed (35%): about 3,045 kWh, worth ~30c each = ~$913 saved
• Exported (65%): about 5,655 kWh at Meridian's 17c = ~$961 earned
• Combined annual benefit: roughly $1,874

Now look at what happens if that same household lifts self-consumption to 50% just by running the dishwasher, washing machine and hot water cylinder during daylight:

• Self-consumed (50%): 4,350 kWh at 30c = ~$1,305 saved
• Exported (50%): 4,350 kWh at 17c = ~$740 earned
• Combined annual benefit: roughly $2,045

That's an extra $171 a year for free, simply by shifting when the appliances run. Self-consumption is the lever you actually control, and it matters far more than which retailer's logo is on your bill.

The fixed-charge trap: don't just compare buy-back rates

Here's where plenty of people get caught. A retailer can advertise a tempting buy-back rate and quietly claw it back through higher daily fixed charges or a worse per-unit import rate. The buy-back number is one line on a three-line bill.

Before you switch to Meridian (or anyone) for the export rate alone, compare all three numbers side by side:

• Daily fixed charge (cents per day, the standing cost just for being connected)
• Import rate (what you pay for grid power when the sun isn't shining)
• Buy-back rate (what you're paid for export)

A plan with a slightly lower buy-back but a much lower daily charge can easily come out ahead, especially in winter when you're importing more than exporting. The Electricity Authority's Powerswitch tool is the impartial place to compare full plan economics, and you can model the whole lot for your own usage on our buy-back and tariff engine.

Low-user versus standard-user plans still matter

Although the Government has been phasing out the regulated low-user fixed charge, the structure of your plan still shapes the outcome. Solar households often import less from the grid overall, which can change whether a low fixed-charge plan or a low per-unit plan suits you. Don't assume the plan that suited you before solar is still the right one after.

Who Meridian's flat plan is genuinely good for

The flat buy-back works well for:

• Panel-only homes with no battery, where export lands mostly midday
• People who want simplicity, with no app-watching or load-shifting games
• Households who can lift daytime self-consumption (working from home, daytime appliance use, pool pumps, EV charging on a day shift)
• Anyone who values knowing exactly what they'll be paid, every hour, all year

Where it doesn't stack up

Being honest, the flat rate is not the right call for everyone.

• If you've got a decent battery, you can store self-generated power and discharge it into a peak-export window. A time-of-use plan from Octopus or Ecotricity will likely out-earn a flat 17c. The battery turns the maths on its head.
• If you export huge volumes (an oversized system on a small household), you're effectively selling a lot of power at 17c that you paid retail prices to install. Past a point, exporting at a low rate isn't a great use of capital, and a smaller, well-matched system would have paid back faster.
• Renters and short-term owners: if you won't be in the house long enough to recoup the install cost, no buy-back rate fixes that. Solar pays back over years, not months.
• Heavily shaded roofs: a beautiful buy-back rate is worthless if a neighbour's poplar or a two-storey extension means your panels barely generate. Sort the shading question first.

And the honest headline that the industry rarely says out loud: no grid-tied solar plan, Meridian's included, will zero your winter power bill. In June and July your panels produce a fraction of summer output while your heating demand peaks, so you'll be buying from the grid at night and on grey days regardless. Solar shaves the bill hard across the year; it doesn't delete it.

How Meridian compares to the other solar-friendly retailers

Meridian sits in a competitive middle band. It isn't always the highest flat rate on the market, but it's reliably solid, it's backed by a 100% renewable generation story, and the flat structure is refreshingly easy to understand.

For a battery-free home, that combination is hard to beat. If you want to see how the flat approach lines up against contract-style and peak-export models, it's worth reading how Power Edge structures its buy-back contracts alongside the peak-export plans mentioned earlier. Comparing the three styles side by side is the fastest way to see which one fits your roof and your routine.

What to do before you sign

A few practical steps that will save you real money:

• Confirm the current buy-back rate in writing. Rates change. Get the live cents/kWh figure from Meridian directly, not from a third-party blog (including ours, this one will date).
• Estimate your self-consumption honestly. Are you home during the day? Will you shift appliances? This single number drives your whole return.
• Compare all three rates (fixed, import, buy-back), not just the export figure.
• Check for export caps or special conditions. Some plans pay the headline rate only up to a daily or monthly export limit. Read the fine print.
• Model it on your actual usage using the tariff engine before committing.

Frequently Asked Questions

What is Meridian's current solar buy-back rate?

Meridian pays a flat buy-back rate, currently around 17 cents per kWh on its standard solar plan, though retailers adjust these figures over time. Always confirm the live rate with Meridian directly before you switch, because the number quoted anywhere online can date quickly.

Is a flat buy-back rate better than a time-of-use rate?

For a panel-only home with no battery, a flat rate is often better, because most of your export happens at midday when time-of-use plans pay the least. If you have a battery that can discharge into the evening peak, a time-of-use plan can pay considerably more. It comes down to whether you can control when you export.

Does Meridian solar buy-back eliminate my power bill?

No grid-connected solar plan does. You'll still buy power from the grid at night, on cloudy days, and through winter when production drops and heating demand rises. Solar substantially reduces an annual bill rather than removing it.

How much can I earn from exporting to Meridian?

It depends on your system size, location and self-consumption. A 6kW north-facing system in Canterbury exporting around 5,000 to 5,600 kWh a year at 17c would earn roughly $850 to $960 annually in export payments alone, on top of what you save by using your own generation directly.

Should I increase self-consumption or rely on the buy-back?

Self-consumption nearly always wins. Power you use yourself is worth the full retail rate (around 28 to 35c), while exported power earns only the buy-back rate (around 17c). Running appliances and charging during daylight is the single most effective way to improve your return.

Is Meridian good for homes with a battery?

It can be, but a battery opens the door to peak-export plans from retailers like Octopus and Ecotricity that pay a premium during evening peaks. If you have a battery, it's well worth comparing a flat rate against those time-of-use options rather than defaulting to flat.

Do I need to be on a special plan to get the buy-back rate?

Yes, you generally need to be on Meridian's designated solar plan and have an export-capable meter configured. Your installer and Meridian will sort the metering and plan setup as part of getting connected. Confirm the plan name and rate in writing before you commit.

Are there export caps I should watch for?

Some plans across the market limit how much export earns the headline rate, or pay a lower rate beyond a certain volume. Always ask whether the buy-back rate applies to all your export or only up to a cap, particularly if you have a larger system.

The Bottom Line

Meridian's flat buy-back is a clean, predictable option that genuinely suits the most common solar setup in New Zealand: panels, no battery, a household trying to make sensible savings without playing energy-trader. The flat 17c (confirm the live figure) means you're never punished for generating at midday, which is exactly when a panel-only system does most of its work.

Just remember that the buy-back rate is only one line on the bill, and self-consumption is the lever that moves the dial most. If you're weighing up a battery, or you're the kind of person who'll happily optimise around peak windows, it's worth reading how the peak-export plans from Octopus compare before you settle. And when you're ready to see what the gear actually costs on your own roof, that's where real numbers beat any rate comparison.