ᐅ Energy-Free House with Octopus Energy and Roth Massivhaus?

Hello everyone,

Have you heard about the project by Octopus Energy and Roth Massivhaus? They apparently built a house that operates completely without energy costs. The house is equipped with a sophisticated combination of photovoltaic systems, energy storage solutions, and a highly efficient heat pump. This setup is designed not only to cover the house’s own energy needs but even to supply energy back to the grid.

Has anyone heard of this or worked with similar concepts? Do you think these energy-cost-free houses could be the future of living? I find the idea fascinating, but I’m not sure how practical it would be on a large scale.

I’m looking forward to your opinions!

Cloud schrieb:

Do you believe in such energy-cost-free houses

Who covers the standard costs for the house? The photovoltaic system? The large battery storage?
How does Octopus Energy make a profit? Do they store the surplus electricity produced in summer for free and give it back at no cost?

No. Energy without cost does not exist. Someone always pays somewhere, and someone profits from it.

Hmm, so we basically also have zero energy costs.
A standard KfW40+ with 12 kWp.
50€ electricity costs, 50€ feed-in tariff.
So roughly break-even when it comes to energy costs.

Doesn't sound like a huge effort at all. I have a KFW55 from a regular local general contractor. Thanks to photovoltaics, storage, and a heat pump, today I didn't have to buy any energy, for example.

Gerddieter schrieb:

Thanks to photovoltaics, battery storage, and heat pump

And what about in winter at -10°C (14°F) with snowfall?

RotorMotor schrieb:

Hmm, so energy cost-free

Have you already paid upfront through KfW40+ plus photovoltaics and storage?

It doesn’t look any different for me either