Does a home battery count towards your energy label?
Home batteries are booming, and many homeowners wonder: does a battery also improve my energy label? Since 29 May 2026 the official answer is "yes", but with plenty of fine print. In this blog you will read exactly when a home battery counts, how much it delivers and why a plug-in battery misses out.
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Calculate your price now →The short answer: yes, since 29 May 2026, but with conditions
Until recently a home battery did not count in the energy label. With the updated NTA 8800 calculation method that applies since 29 May 2026, that has changed: a fixed (built-in) home battery now gets a small credit in the calculation. The key word is "small", because the bonus was deliberately kept limited.
A battery only counts if all three of these conditions are met:
How much does a home battery deliver for your label?
Honestly: not much. The method only credits 5 percent of the smaller of two numbers: your own solar generation and your own electricity consumption. That 5 percent is a deliberately set policy value, not a physical saving.
What that means in label classes depends entirely on your home: the consumption, the number of solar panels and where you sit on the A to G scale. Do not count on a battery delivering a whole label jump on its own. Think of it as a small extra on top of your solar panels, not the main measure.
Why does the battery count so little?
Here is why: your solar panels are already fully credited in the energy label. The solar power you generate already lowers your calculated energy use. A battery only adds that small extra credit on top, as recognition that a battery helps you use more of your own solar power instead of feeding it back to the grid.
Without solar panels there is nothing extra to "use more of", so the battery then does nothing for the label. Below 5 kWh of storage the bonus is also zero.
Plug-in or fixed battery: that difference really counts
This is the biggest pitfall. The credit applies only to a fixed battery: a system with a permanent connection behind the meter, part of your home's electrical installation.
A plug-in home battery, one you simply plug into a socket, does not count towards your energy label. That does not make such a plug-in battery any less useful (see below), but for your label class it does nothing.
What does the advisor record during the inspection?
If you have a fixed battery, the advisor simply notes during the home inspection that there is a battery and what the total storage capacity in kWh is. The battery is a separate input and changes nothing about how your solar panels are entered. Good to know: thermal storage (for example a heat battery) also counts towards that same 5 kWh threshold.
And the future? The ZEB indicator is coming
There is a chance that battery storage will count more heavily in the future. The NTA 8800 now includes a new, informative indicator (the ZEB indicator, from the European EPBD IV directive) in which batteries are credited more fully. That calculation is already run, but does not yet appear on your energy label. Whether and when that changes is a matter of policy, so we make no firm promise about it.
Is a home battery worth it then?
Definitely, just not primarily because of your energy label. The real value of a home battery lies elsewhere: you use more of your own solar power yourself, instead of feeding it back cheaply and buying it back expensively later. That makes you less dependent on the grid and on fluctuating electricity prices.
In short: choose a home battery for your energy bill and your self-sufficiency, and see any label bonus as a small plus, and only with a fixed system combined with solar panels.
Frequently asked questions
Does a home battery count towards the energy label?
Since 29 May 2026 a fixed (built-in) home battery counts in the NTA 8800 calculation, but only if the total storage capacity is at least 5 kWh and solar panels are also present. The effect on your label class is small.
Does a plug-in home battery count towards the energy label?
No. Only a fixed battery with a permanent connection behind the meter counts. A home battery you simply plug into a wall socket does not count towards the energy label.
How much does a home battery improve my energy label?
Little. The calculation only credits 5 percent of the smaller of your own solar generation and your own consumption. How much class improvement that is depends on the home, but do not expect a whole label jump from a battery alone.
Do I need solar panels for my home battery to count?
Yes. Without solar panels the battery does nothing for the energy label. The credit exists precisely because the battery increases your own use of self-generated solar power.
Solar panels or a battery, and need an up-to-date label?
Have you invested in solar panels or a battery and want that reflected on an official energy label? We inspect your home, calculate everything correctly under NTA 8800 and register your new label in EP-online. From € 220, including free improvement advice.