Payback time home battery 2026: is a home battery worth it?

The payback time of a home battery in 2026 lies somewhere between a good 6 and 22 years, and whether a home battery is worthwhile depends mainly on your solar panels, your nighttime consumption and the price you pay for the battery.

In this article you'll read how to calculate the payback time yourself, why the figures in ads and studies are so far apart, and for whom a home battery does and doesn't pay off after 2027.

What is the payback time of a home battery?

The payback time of a home battery is the number of years you need to recoup the purchase price through the savings on your electricity bill. You divide the net investment (battery plus any installation, minus VAT refund) by what the battery earns you per year. That return mainly consists of solar power you use yourself instead of feeding back.

Independent real-world measurements come out at 10 to 22 years for an average household, while sellers often mention 4 to 8 years. Both numbers can be correct, because they assume a different battery and different usage. If you'd first like to see which systems are out there, take a look at the home batteries with capacities from 2 to 42 kWh, as a plug-in model or as a modular, expandable system.

Why do the figures on payback time vary so widely?

The figures on payback time vary so widely because each source calculates with a different revenue model. A home battery can earn money through self-consumption of solar power, trading on hourly prices, the imbalance market (where your battery helps keep the power grid in balance) and flattening out peaks. Ads promising 2 or 4 years almost always calculate with daily trading on hourly prices and a large battery.

For a private individual, that trading model barely works, because after 2027 you pay energy tax and VAT on every kWh you buy in, while you don't get that back on electricity you feed back. The Netherlands Authority for Consumers & Markets calls such promises misleading, and the Vereniging Eigen Huis measured savings of around 350 euros per year across 13 households. For most households with solar panels, only self-consumption works structurally, and that's what this article is based on.

How do you calculate the payback time of a home battery yourself?

You can calculate the payback time of a home battery yourself with one formula: net investment divided by the annual savings. Those savings are the number of kWh you consume yourself thanks to the battery, times your electricity rate, minus the feed-in payment you miss out on for those kWh. Subtract the charging losses too, because not everything you put into the battery comes back out.

Without a battery, a household with solar panels uses on average about 30 percent of its own solar power directly; with a battery that rises by roughly 30 percent, according to Vereniging Eigen Huis. You can see your own upper limit in your inverter's app or with a P1 meter, a little box on your smart meter that reads your consumption live. A battery never captures more than your daytime feed-in or your consumption between sunset and sunrise, whichever of the two is lowest.

Sample calculation of the payback time of a home battery

A sample calculation of the payback time of a home battery makes the formula concrete. Say you have solar panels, 3 kWh of night-time consumption and a 5 kWh plug-in home battery for around 1,200 euros. At 27 cents per kWh (reference price Milieu Centraal, January 2026), real-world data shows you save about 190 euros per year, which works out to a payback time of just over 6 years.

A fixed 10 kWh installation costing 6,000 euros saves 190 to 350 euros per year at the same night-time consumption and only pays for itself in 17 years or more. That's longer than the 15-year lifespan RVO uses in its calculations. These are indicative amounts to illustrate the calculation, not current prices.

Which factors determine whether a home battery is profitable?

Six factors determine whether a home battery is profitable: the net price of the battery, your night-time consumption, your electricity rate, the feed-in compensation you miss out on, the charging losses and your annual yield. Price weighs most heavily, because the annual savings for an average household have a fairly hard upper limit.

That's why a cheap battery pays for itself faster than an expensive one, even if the expensive one has more capacity. These factors have the biggest impact on the payback time of a home battery:

• Net investment: the price of the battery, plus installation costs for a fixed setup, minus the VAT you can reclaim as a private individual.
• Night-time consumption: the number of kWh you use between sunset and sunrise; a battery can't save you more than that.
• Electricity rate: the higher your rate per kWh including energy tax, the more each stored kWh is worth.
• Feed-in compensation: what you miss out on per kWh fed back to the grid if you store that power instead; from 2027 at least 50 percent of the bare supply rate (excluding energy tax and VAT) until 2030.
• Charging losses: the portion of power lost during charging and discharging, in practice 15 to 25 percent.
• Annual yield: how much solar power you have left over during the day to charge the battery, especially outside the summer.

Anyone who fills in these six factors for their own situation gets a more realistic picture than any average payback time ever could. Three of these factors deserve some extra explanation.

Your nighttime consumption limits the efficiency of a home battery

Your nighttime consumption limits the efficiency of a home battery, because self-consumption can never save more than what you use yourself in the evening and at night. If you use 3 kWh per night and buy a 10 kWh battery, then 7 kWh sits unused in the battery every morning.

An analysis by the independent knowledge platform Jeroen.nl, based on quarter-hourly data from over 1,300 Dutch households with solar panels, shows that above 4 to 5 kWh a battery adds virtually nothing financially at an average nighttime consumption. A rule of thumb: take your average power consumption between sunset and sunrise from March through September and multiply it by 1.5 for the charging losses.

A dynamic or fixed energy contract and the payback time

A dynamic or fixed energy contract changes the payback time, but less than is often claimed. With a fixed contract, you save the full rate per stored kWh that you would otherwise pay, and for self-consumption that already makes up the largest share of the returns.

With a dynamic contract, a second, smaller source comes into play: charging during cheap hours and discharging during expensive hours. Research by the University of Groningen shows that this trading profit shrinks as more households do the same thing, so don't count on it as the basis of your investment.

Charging losses and the efficiency of a home battery

Charging losses directly reduce the efficiency of a home battery: part of what you put into the battery never comes back out. Manufacturers often claim an efficiency of 90 to 95 percent, but in practice 15 to 25 percent disappears during charging and discharging, partly due to the inverter and standby consumption.

So if you put 10 kWh into the battery, you'll get roughly 8 kWh back out. That's why you should use a conservative efficiency of 80 percent when calculating your own payback time.

Is a home battery profitable after 2027?

After 2027, a home battery becomes profitable faster for households with solar panels than it is now, because the net metering scheme ends all at once on 1 January 2027. Until that date, you can offset the power you feed back into the grid against your consumption, which means a battery barely saves you anything right now. From 2027 onwards, you'll only receive a feed-in compensation for the power you return, which until 1 January 2030 is legally set at a minimum of 50 percent of the bare supply rate, so excluding energy tax and VAT.

From 2027, every kWh you use yourself instead of feeding back to the grid is worth the difference between your full rate and that compensation. From 2030, the 50 percent minimum disappears and the supplier sets the compensation itself, under supervision of the ACM. The lower the compensation, the shorter the payback period of a home battery, though even then your nighttime consumption remains the ceiling.

Is a home battery without solar panels cost-effective?

A home battery without solar panels is financially not cost-effective in most cases, because you have no electricity of your own to store. You'd then have to fill the battery with power from the grid during cheap hours and discharge it during expensive hours. On the purchased electricity you pay energy tax and VAT, which means the price difference between those hours is rarely big enough to earn back the purchase within its lifespan.

A home battery without solar panels can still make sense for other reasons: backup power for medical equipment or an aquarium, less dependence on the grid, or as a first step before you add panels later. If that's why you're buying, see it as peace of mind and not as an investment with a payback period.

Does a plug-in home battery pay for itself faster than a fixed installation?

In most households, a plug-in home battery pays for itself faster than a fixed installation, because the investment is lower while the savings from nighttime consumption stay roughly the same. You connect a plug-in battery yourself to a power outlet or its own circuit, without an installer, and you start with 2 to 5 kWh. A fixed installation often has 10 kWh or more, a higher charge and discharge capacity, and installation costs that usually run into the hundreds of euros.

That higher capacity of a fixed installation is useful if you switch on big power users in the evening, like an induction hob or a charging station. If you have average nighttime consumption, a plug-in home battery of around 5 kWh is the option that comes closest to a cost-effective investment. If you want to expand later, choose a modular system you can connect extra batteries to.

When is a home battery cost-effective for you?

A home battery is cost-effective for you if you have solar panels, feed a lot of power back to the grid, and use a good portion of your electricity in the evening and at night. The more of these conditions apply, the shorter your payback period. If none of them apply, you probably won't earn the battery back within its lifespan. A home battery pays off first in these situations:

• Solar panels with lots of feed-in: you generate more during the day than you use and feed hundreds of kWh back each year.
• High nighttime usage: you charge an electric car at night or run a heat pump, so a larger battery gets put to use too.
• Low purchase price: you choose a plug-in battery with no installation costs and reclaim the VAT.
• Fixed or dynamic contract with a high rate: the more you pay per kWh, the more every stored kWh is worth.
• Looming upgrade of your connection: a battery absorbs peaks, so your fixed grid costs don't go up.

If at least three of these points sound like you, there's a good chance a home battery will pay for itself within 10 years. If you're unsure, track your nighttime usage for a month first before choosing a capacity.

What matters besides the payback time of a home battery?

Besides the payback time of a home battery, three things matter that you can't express in euros per year: backup power, your connection capacity and the value of your home. Models with a backup function keep your fridge, internet or medical equipment running during a power outage. That's rare in the Netherlands, but decisive for some households.

A battery that flattens peaks prevents you from needing a heavier connection when you add a charging station or induction hob. On top of that, from 1 January 2029 the ACM wants to introduce time-based grid tariffs, with the highest rates in the evening; a battery that then covers your evening usage saves you even more. The final rates will follow at the end of 2028.

Finally, since 29 May 2026 a home battery counts toward the energy label, which can help when you sell your home. This only applies to a permanently connected battery of at least 5 kWh; a plug-in home battery doesn't count.

Curious whether a home battery is worth it for you?

Curious whether a home battery is worth it for you? You'll know once you figure out your nighttime usage and run the numbers with the formula in this article; only then should you pick a capacity. At TechPunt you'll find plug-in and modular systems, such as the Zendure home batteries and the Anker SOLIX Solarbanks, shipped from our own warehouse in Barneveld with a 2-year manufacturer's warranty.

Not sure which capacity fits your usage? Ask us by phone, email or WhatsApp; we're happy to help you work it out.