If Elon Musk's vision of the full power of millions of families becomes a reality, it will most likely come true in Germany first.
But he will face a fight against local companies with years of experience in renewable energy for market share.
South Africa-
Tesla, a natural entrepreneur known for its electric vehicles, has sparked global interest in self-concept.
When it said it would start selling lithium in April,
Ion batteries for home use next year.
These batteries, known as poweralls, are connected to solar panels on the roof of the house with the aim of storing enough power during the day to open the kettle and washing machine at night.
One day, they argue, families will be able to rely entirely on clean energy and be independent of the grid.
The challenge is great.
The technology does not allow most users to disconnect from the grid yet.
According to BSW, the German solar energy industry association, solar cells can increase the power generation of solar energy.
At least 60 PCs.
The cost of purchasing and installing solar panels and batteries is around € 10,000.
But technology is improving and costs are falling, and some analysts believe
More solar panels than anywhere in the world.
High price of electricity
It will be the first mass market in the industry.
"The business model of power batteries is becoming more and more attractive," said Norbert Schwieters of PwC . " He pointed out that the market estimates that sales in Germany may reach half. a-
Millions in ten years, from 25,000 now.
If the market really takes off, Musk will compete with German companies with mature retail networks and years of experience in solar equipment management.
"Tesla has made sure they are seen as a lifestyle gadget," said Volker Wachenfeld, who is in charge of SMA Solar hybrid energy and storage solutions . ".
This is one of several German companies including Sonnenbatterie and Varta that have ambitions in the market.
Daimler Accumotive will also launch a product, while Solarwatt, owned by BMW's main shareholder Stefan Quandt, says it is ready to join the competition.
Tesla, who is ready to fight, has established partnerships with German companies Beegy and LichtBlick in order to benefit from local expertise.