Become independent with a smart home battery
Discover how a smart home battery, combined with solar panels, can drastically reduce your energy bill. Benefit from maximum self-sufficiency and minimal energy costs.
Plug & play, stackable to your needs
From compact entry-level model to fully extended system — the Marstek collection grows with your energy needs. Choose the number of modules that suits your consumption and start saving today.
Doubting which product suits you best? Request free advice →
Why choose LaagKW?
Concrete, honest, and without promises we cannot keep.
We focus on battery systems — plug & play and professional installations. That's all we do, and we do it well.
No chatbot, no call center. Just an honest conversation about what works best for you.
We only work with brands we trust ourselves—Marstek, Pylontech, Dyness, Leapton, and Atmoce.
Certified technicians, neat delivery and always available if anything comes up.
From solar panels to charging stations—we supply and install everything you need for an energy-neutral home.
Store self-generated energy and use it when you need it – even at night or during peak demand.
Generate your own electricity with high-quality solar panels and immediately save on your energy bill.
Smart charge your electric car at home — with solar power during the day, and at a low rate at night.
Combine the efficiency of a heat pump with the reliability of your central heating boiler — ideal for the Dutch winter.
Not sure what you need? We offer free advice.
Tailored personal advice, without a sales pitch.
What our customers say
No fancy talk — just honest experiences from people like you.
"The plug & play battery was installed within 5 minutes. My energy bill dropped by €85 in the first month alone. Should have done this much sooner."
"Finally, a company that's just honest. They didn't promise the world, but the savings are even higher than expected. Over 1,200 euros cheaper per year."
"Good service, quick installation. The consultation took less than half an hour, yet they calculated everything thoroughly. I recommend it to everyone."
All you need to know
Still in doubt? Here are the most honest answers to the most frequently asked questions about home batteries.
Yes. A plug & play home battery connects to a standard power outlet (230V). You don't need to make any modifications or hire an electrician. All you do is plug it into the socket, set up the app — and you're done. Suitable for renters and owners.
Yes. Our batteries are CE certified and comply with all European safety standards. They are equipped with built-in protection against overvoltage, overheating, and short circuits. You can safely use them indoors.
That depends on your consumption and the battery capacity. A household with solar panels and a 3 kWh battery can save an average of €300–500 extra per year on top of the savings from the panels alone. Over 10 years, that quickly amounts to €3,000–5,000.
No, it's not mandatory. You can also charge a battery with cheap off-peak electricity (dynamic tariff) and use it during the day. However, the biggest savings are made when you combine the battery with your own solar panels.
Absolutely. Our plug & play line is modular. Start with the Compact and later switch to the Plus or Pro. This way, you can adapt your system to your situation and budget.
Our batteries have an expected lifespan of 10–15 years, depending on usage and type. We provide a minimum 10-year product warranty. After that period, most batteries still perform at 80% of their original capacity.
Home batteries are currently not eligible for direct subsidies. However, VAT on solar panels is 0%, and there are schemes for heat pumps (ISDE). We will inform you about all current schemes during the consultation.
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