Have you already dug into the topic of “home battery storage” – and gone deep?

• Maybe you’ve talked to colleagues or friends who already have experience with PV batteries – or at least opinions about them?

• You’re not sure: Is a battery really worth it now – or will you end up losing money?

• How much does a PV battery actually cost – above all, with all the extras like installation, transport and peripherals?

• Might your electrician be ripping you off?

• How can you be sure you’re choosing the right manufacturer?

• And what about dynamic electricity tariffs, backup power and combining your battery with an EV and a heat pump?

You want to be more independent, produce and store your own electricity. When buying a home battery, benefit from someone who spent years selling home batteries himself.

This ultimate guide gives you the tools for your battery purchase. No sugar-coating, no unrealistic profitability promises – just a clear statement of what really matters in a home storage system!

Play it safe

“Energy-Independence-Day” helps you prepare optimally for your battery purchase. You’ll learn the background and important details about how the different battery types work – and in this e-book I’ll also tell you what a battery cannot do.

The good news first: prices have fallen massively. A complete 10 kWh storage system installed today typically costs around 3,000 to 5,500 euros – that is, roughly 270 to 500 euros per kilowatt hour. Ten years ago it was three to four times as much. And that is exactly why solid knowledge pays off twice over right now: the economics finally work, but the market is more confusing than ever – dozens of manufacturers, new cell chemistries, subsidy programs, dynamic tariffs. So I invite you to prepare for your purchase intensively, efficiently and smartly – before you buy.

That’s why – after more than ten years in the storage market, since 2011, including several years actively selling storage systems (yes, I sold them myself and showed electricians how to sell them) – I have completely revised my field-tested storage guide and brought it up to date for 2026.

I know both sides: the manufacturer’s – and your position:

• How do I know I’m making the right decision?

• What if the thing turns out to be a complete flop?

• Who is responsible if my battery doesn’t work?

• Will I understand it right away, or do I have to read a 1,000-page manual?

• Where do I even put the thing?

• How big should my battery actually be – and what happens if my consumption changes one day, for example with an EV or a heat pump?

• What are they not telling you?

• What is the real economic picture for storage systems?

Every one of these questions is absolutely justified – and that’s why I wrote this book for you.

1. You will know exactly how to size your battery – first roughly, then precisely, whether with a classic meter or a smart meter.

2. You will understand exactly the two ways of integrating a battery (DC and AC coupling), what distinguishes them, and which one is right for your situation.

3. You will be able to realistically assess current prices, subsidies in Germany and Austria, and overall economics – including dynamic tariffs and backup power capability – and know whether now is the right time for you to strike.

You will receive the e-book “Energy-Independence-Day” – fully updated to 2026 – which you can read in a short time on your tablet, phone or PC and keep coming back to as a reference. Read the e-book on all your devices – it opens easily as a PDF with the free Acrobat Reader.

Enjoy the read – and here’s to your personal Energy-Independence-Day!