Solar power in Amsterdam: the numbers

I’m in the market for a home battery, because it is soon going to be less profitable to sell electricity back to the grid in the Netherlands. I decided to crunch some numbers and think others may find my general conclusions interesting. Over the course of a year, our household produces 4% more electricity than we consume, but that’s very much not the full story. From April to August, we produce way more than we consume, peaking in June with producing 260.9% of our consumption. With better planning, we could break even in March and September. That’s why I want to buy a small battery to easily cover evenings and nights, allowing us to live de facto off grid from April through September. This is nothing to scoff at, especially considering that Amsterdam is hardly the sun capital of the world. Even in the darkest months, December and January, we produce 14% and 14.9%, respectively, of our consumption. That wouldn’t get us very far if we wanted to be true, ideological off-gridders. I think…