Natural gas-powered heating. Natural gas WP, micro combined heat and power plant?

Over 20 years ago, a coworker of my old man installed a [Blockheizkraftwerk] in his basement. But he also wanted to be electrically self-sufficient, with storage, etc.

The thing never really worked properly, the efficiency was terrible, and there were constant power outages.

After 2-3 years, he threw the thing out, had electricity installed, and put in a conventional heating system. I would like to see the ecological balance OF that action.

Well, the technology has advanced 20 years, but still, I wouldn’t want to play the early adopter.

Normal combined heat and power plants are probably also very maintenance-intensive; I once read that Vaillant, for example, offered a full service maintenance contract for 400 € per year (I can't say if that is still the case). That makes the fun even more expensive.

Attention off-topic:

On the contrary, ecological is often very uneconomical.

Then one has to question whether all costs are priced in or just passed on to future generations. Would nuclear power be economical if the final storage (10,000 years?) were priced in today (discounted)? Hardly ...

I told you so, Bieber.

The chimney has to be built anyway, so why not a double flue.

I can contribute little to the rest, but usually a flue pipe is installed somewhere for a gas boiler, which takes up significantly less space than a second chimney flue.

Warning off-topic: Then you really have to question whether all costs are priced in, or simply passed on to future generations. Would nuclear power be economical if final disposal (10,000 years?) were factored into the price today (discounted)? Hardly ...

You can try discounting the costs. If energy companies invest just one million euros at 3%, then in 500 years they will have saved enough money to buy all of Europe. Final disposal could then be paid out of petty cash, if it is even still necessary. If one discounted 10,000 years, probably only 15 euros would be enough to cover the final disposal. Just as an example. :D