Photovoltaic system: Costs, saving potential? - Experiences?

I have the impression that simply wants to speak badly of photovoltaics, like many other topics. It would be a pity if the expressed interest were not sincere and the unrelated supposedly negative aspects of photovoltaics remained in perception. Everyone, including , subsidizes the (still) profitable photovoltaic systems through the Renewable Energy Act surcharge.

Our motivations for electricity from our own roof: 1. Our house produces more than twice as much electricity as we need, including heating. This means that, in the end, through the one-time investment, we will have no ongoing electricity or heating costs for the next 20 years, with a positive CO2 balance. 2. Partial independence from future electricity price developments 3. It simply pays off, including all typical operating costs. This is actually known and understandable.

Fire: in addition to insurance, there are various approaches for the manageable risk of fire and electric shock. Our modules, for example, can be reduced to 1V voltage; instead of 750V, a total of 32V voltage comes from the roof. Depending on the situation, this happens automatically before a fire, before or when the fire department arrives.

Even if up to 1000V is achieved on the roof with conventional modules: that does not make much difference to the already existing 230/400V in the house. This is the same voltage category and the fire department can still extinguish with water. Minimum distance 1m is stated on most fire extinguishers.

The installation costs are now around 1000 € per kWp (all inclusive). Anyone who pays more is to blame themselves.

Photovoltaic systems are not to be treated differently in terms of fire safety than any other electrical device. We are not talking about a high voltage system here. Sure, they can fall down in a fire, just like roof tiles can. I wouldn’t necessarily pee on them, but extinguishing is quite unproblematic if you know how. And firefighters also need to be properly trained. The technology develops further, but apparently people do not.

The performance loss is between 0.1 and 0.5% per year.

There are no maintenance costs here that must necessarily be carried out by an electrician. Any housewife can check whether cables are brittle or plugs are not properly attached. Anyone can update the inverter or check for errors with a mobile phone. For cleaning the modules: ladder and mop. If you are already up there, you can also look from below to see if everything is still properly in place.

According to my calculation, the system pays off for us in 11.5 years. Depreciation, insurance, taxes, etc. included. If the electricity price rises, it goes even faster.

The level of arguments against photovoltaics by some users here can also be wonderfully read in Posting 24

Posting 24 contains an official transcript. The Quer is mentioned. Everything can be accessed on the German Bundestag's website.

Well, then we probably just define facts differently – for months it was also possible to read everywhere how, why, and when the car toll will come, and that was even much more conclusive...

The level of the arguments against photovoltaics from some users here can also be wonderfully read in post 24

What do you all have against my quote from the RLP state parliament?