ᐅ Air-to-Water Heat Pump: Current Consumption and Data

I have never done that because the goal was always to keep the monthly utility costs as low as possible. That’s why photovoltaic panels along with a battery storage system have always been part of my house design. Especially since I have had an electric car for 4 years, which also functions as an additional storage unit.

Basically, the photovoltaic system and the battery storage have already paid for themselves, as we make significant repayments and extra payments.

The only thing is that nothing should break easily.
I can gladly share the self-consumption and energy independence data in kWh once my 12-month billing period is over, so you can get an idea of what is possible.

There are plenty of economic feasibility calculations available for photovoltaic systems with storage. Generally, they all conclude a payback period of 12-15 years, depending on the specific offer, system design, and usage patterns. Damages are not taken into account; in individual cases, you might be unlucky, but usually, the system is insured against external impacts.

Bookstar schrieb:

There are plenty of economic efficiency calculations available for photovoltaic systems with storage. Generally, they range between 12-15 years, depending on the offer, system design, and usage patterns. Damage is not considered; in individual cases, you might have bad luck, but usually, the system is insured against external damage.

Certainly. I suspect photovoltaic systems have a payback period of about 11-13 years, or even faster if you include savings from self-consumption with an electric vehicle. The battery storage system is somewhere around 16 years, based on the electricity drawn from the storage over the last 10 months. Maintenance charging or similar effects hardly play a role, as I observed this winter.

So, I am clearly making an upfront investment but am happy that overall, over 12 months, my net grid costs have only been around 50-55€.

Today is a dark, rainy day. Starting tomorrow, there will be two days of sun again.

I have to say that I never really understood the economic calculations. We have a photovoltaic system with 9.92 kWp, a 13 kWh storage unit, and an electric car. I enjoy the photovoltaic system so much that the economic efficiency really doesn’t matter to me at all. Yesterday, the inverter was down for half a day, and that made it clear that I don’t want to go a single day without photovoltaic power anymore....

PS: A photovoltaic system is ALWAYS worthwhile.

@MelanieS

Well, the purchase and maintenance cost around 15,000 to 20,000 euros. Since money doesn’t grow on trees, you first have to earn it. And with those 20,000 euros, you can buy a lot of electricity.

MelanieSH schrieb:

I have to say, I never really understood the economic calculations. We have a photovoltaic system with 9.92 kWp, a 13 kWh battery storage, and an electric car. I enjoy the photovoltaic system so much that the economics really don’t matter to me at all. Yesterday, the inverter was down for half a day, and that’s when you realize you don’t want to go a single day without photovoltaics...

PS: A photovoltaic system is ALWAYS worth it.

The repair costs for your inverter would then be an additional factor in the economic calculations.