Air-water heat pump current consumption and data

I just calculated it, the amortization is over 20 years. In practice, it's probably more like 25-30 years.

My guess: You can't do math.

A photovoltaic system doesn’t even pay off with self-consumption and feed-in under 12 years. How is it supposed to pay off at all without self-consumption? I’m curious!

Nonsense again. 10kW system – just installed. Costs €11,500. Payback with 8 cents feed-in tariff and about 35% self-consumption after 8.5 years. Cheaper system = faster. Higher self-consumption = faster. Full feed-in approx. 11 years.

A photovoltaic system doesn't pay off even with self-consumption and feed-in for less than 12 years. How is it supposed to pay off at all without self-consumption? I'm curious about that!

I just calculated it, the amortization is over 20 years. Then the thing is junk. You can forget it completely :). But that doesn't include any insurance or the possibility that the inverter might fail within that time. In practice, you're probably looking at 25-30 years.

I really can't read it anymore. Just stop badmouthing photovoltaics.

Especially with your heat pump consumption and the e-car, at least photovoltaics without storage would be profitable.

Even I come to +4k€ after 20 years including storage without considering any electricity price increases, minus taxes, performance losses, insurance, etc. My photovoltaic system has now produced a gross income/savings of €1,639 in the 50th week. You can extrapolate that over 20 years and deduct whatever costs you want. If after deductions you still end up with €19k, we're roughly breaking even.

A photovoltaic system doesn't even pay off with self-consumption and feed-in under 12 years. How is it supposed to pay off at all without self-consumption? I'm curious about that!

I just calculated it, the payback period is over 20 years. Then the thing is junk. You can completely forget about it :). But that doesn't include any insurance or the fact that the inverter might crash within that time. In practice, you're probably looking at 25-30 years.

Just stop trying to compensate for lack of experience and knowledge with prejudices.

I simply determined it using Google values. 7kwp costs 10k. 8 cents are paid for feed-in. 800kwh annually per kwp. That's 450 euros annual yield.

So it's at least 20 years. Counterproof? :)

I simply determined it using Google values. 7 kWp costs 10k. There's 8 cents for feed-in. 800 kWh annually per kWp. That's 450 euros annual yield.

So it's at least 20 years. Counter-evidence? :)

It's written with me. These are not fictitious values. It is calculated with my real data, i.e. the feed-in tariff and the electricity provider price.