Photovoltaics at any cost - current situation and offers

Once again the battery storage calculation.

My installation costs for the battery storage were 5200 euros gross for 10 kWh storage capacity.
Annual battery charging 3000 kWh.

Electricity price from 01.01.2022 for me was 48.06 cents per kWh.

Savings on electricity supplier: about 1500 euros annually.
Of course, we subtract the feed-in tariff from that. Because instead of charging the battery, we would then feed into the grid.
Of course not for 48.06 cents but only for 8 cents.

So now we subtract 240 euros from the 1500 euros. This leaves 1260 euros cost savings from the battery annually. It takes hardly 5 years until it has paid for itself.

It pays off from day one. And I am sure the electricity price will continue to rise in a few years.

In other forums, the thesis was always that the battery storage is nonsense, never pays off, and the electricity price will fall again.
You can believe that if you want, but you don’t have to. Many thousands of photovoltaic investors actually believed this nonsense. Filled their roofs,
fed everything into the grid at full throttle, and now calculated completely wrong.

My personal calculation was always to become as self-sufficient as possible and to transfer as little as possible to my electricity supplier.
From 5000 kWh annual consumption, I have come down to only 1000 kWh p.a.

That saves me almost 2000 euros on the annual electricity bill. Battery or no battery.

But that's also a price/kWh you normally don't get. Did you also get that at an auction? Or build it yourself (you could then tell us more about that)?

But that's also a price/kWh you usually don't get.

Well, the pure storage currently costs from T€ 4.3 gross on the network, the nicer / better version from about T€ 7. If you do it yourself with a friendly electrician, the price is actually okay.
From the solar installer, of course, it looks completely different.

Ok, so I haven't seen such offers. They start at just under 8,000 EUR.

And actually, I meant the solar installer.

.....

It pays off from day one. And I am sure the electricity price will continue to rise in a few years.

In other forums, the thesis was always put forward that the storage system is nonsense, never pays off, and the electricity price will drop again.

I would also fully agree with the people in other forums regarding the electricity price, but the question is at what time of day the electricity price decreases. I regularly look at the hourly exchange prices for electricity on Awwatar, and there you can very well track what happens with good yields from renewables; the electricity price then drops extremely, sometimes even into negative territory.

Such cheap phases will massively increase if we take expansion seriously.

The goal should be to better utilize and control these phases through variable electricity tariffs that bill hourly and provide appropriate monetary incentives for storage owners (house or e-car) to make their electricity available at times of low feed-in.

I would not generally say storage is not worthwhile (at the moment it definitely is), but I think in the future it entirely depends on the purpose of use (just for oneself or also beneficial to the grid).

I congratulate everyone who acquires and installs storage at the mentioned prices and possibly even gets subsidies. If you get a storage system installed for 500€/kWh or less, it certainly becomes economically interesting. However, in my opinion, that is unrealistic at the moment. I also don’t know where some people here pull their prices from; I find (admittedly without hours of research) prices around 800€/kWh. At least those that are orderable. And to add, that is the pure storage. No hybrid inverters etc. and no installation costs. Some numbers here I also don’t understand. 3000 kWh from a 10 kWh storage per year would be 300 cycles. Even optimists usually cut their wings there under normal circumstances. How one manages to get 3000 kWh out of storage with a 5000 kWh annual consumption, draws 1000 kWh, and only consumes 1000 kWh directly is a mystery to me as well? ?