Roof covering and solar technician selection - Decision?

Looks great, that's a few kWp coming together there. Would you mind sharing where you ended up price-wise with everything included?

At these electricity prices, a photovoltaic system without storage simply does not make sense. Even if many experts in other forums see it differently. Nobody admits to having been mistaken.

As you can see, you also built expensively. The solar installer is happy because the margin with storage gets smaller. Doesn’t matter.

With a consumption of 10,000 kWh, your system might allow you 2 - 3000 kWh of self-consumption.

A 10 kW storage would save you 3000 kWh of grid purchase annually.

A 10 kW storage would save you 3000 kWh of grid purchase annually. Roughly calculated it would bring another €1500 in savings. That would bring another €30,000 in 20 years. The storage would have paid for itself after 5 years.

Totals up to €2700 savings annually and the system would be paid off in about 10 years.

So you have a huge photovoltaic system on the roof, of which you can only use 30 percent of the electricity production. You have to generate 6 kWh to be able to buy 1 kWh. Of course storage makes more sense today than ever. ;)

Congratulations on your great system.

But built too expensively and not very sensible without storage. With these electricity prices, a photovoltaic system without storage simply doesn't make sense. Even if many experts in other forums see it differently. No one admits to having been mistaken.

As you can see, you also built expensively. The solar installer is happy because the margin with storage is smaller. Whatever.

With a consumption of 10,000 kWh, your system will perhaps allow you 2,000 - 3,000 kWh of self-consumption. The rest comes back as feed-in tariff.
At 8.5 cents per kWh and 14,000 kWh feed-in, that will be about 1,200 euros. Plus the savings from the 3,000 kWh, so maybe another 1,500 euros in electricity costs. That makes a total annual saving of 2,700 euros, and the system would be amortized after about 10 years.

A 10 kW storage would save you 3,000 kWh of grid usage annually. Very roughly calculated, that would bring another 1,500 € in savings. That would bring another 30,000 € in 20 years. The storage would have paid for itself after 5 years.

I have a storage and would install it again at any time. I have been completely independent and without grid usage for 1 week. And I will remain so until mid to late October, except for a few very rare days.

From 4:00 p.m. the storage takes over its duty and covers the base load. TV, PC, lighting, refrigerator, etc. About 5 kW from the storage are then sufficient until the next morning. If it rains, the home grid takes the remaining 5 kW from the storage. Otherwise, it draws its needs from the photovoltaic system until 4:00 p.m. I have controlled the electric water heating with a timer. Daily from 10 a.m. to 3 p.m. Washing clothes and dishwasher only during that time as well.

So you have a huge photovoltaic system on the roof, whose electricity production you can only use 30 percent. So you have to generate 6 kWh to buy 1 kWh. Of course, a storage makes more sense today than ever. ;)