ᐅ Photovoltaic System: Costs and Savings Potential – Experiences?

I get the impression that @Farilo wants to speak negatively about photovoltaics, just like with some other topics. It would be a shame if the expressed interest were not genuine and if the scattered, supposedly negative aspects of photovoltaics remained the dominant perception. Everyone, including @Farilo, indirectly subsidizes the (still) profitable photovoltaic systems through the Renewable Energy Act surcharge.

Our motivations for generating electricity from our own roof:
1. Our house produces more than twice the electricity we need, including for heating. This means that, overall, due to the one-time investment, we will have no ongoing electricity or heating costs for the next 20 years, with a positive carbon footprint.
2. Partial independence from future electricity price developments.
3. It simply makes financial sense, including all typical operating costs. This is well known and easy to understand.

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

Even if conventional modules reach up to 1000V on the roof, this does not make a significant difference compared to the existing 230/400V in the house. This is the same voltage category, and firefighters can still use water to extinguish fires. Most fire extinguishers specify a minimum distance of 1m (3 feet).

Farilo schrieb:

Ah ok.

But who can install it cheaply?
Current tradesman prices are generally high at the moment.

The fire department itself has confirmed many times that photovoltaic systems need to be considered separately in terms of fire safety. Just search for fire department statements on YouTube—they make sense.

Power loss does occur. Okay. That has to be planned for in the long term.

Of course, if you are an electrician or familiar with electrical work, you can handle repairs yourself. But the average homeowner or professional like a lawyer probably won’t do that. So maintenance costs should be kept in mind. That’s reasonable. People usually set aside a small monthly amount for things like their washing machine too.

So the system pays for itself in about 12–15 years?
Then consider power loss… replacements, and so on...

Hmm

Currently not interesting to me.

But I’m open to more opinions. Maybe some arguments will still convince me.

Installation costs are now about 1000 € per kWp (all inclusive). Anyone paying more is only to blame themselves.

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

Power loss is between 0.1 and 0.5% per year.

There are no maintenance costs that must be performed by an electrician. Any homeowner can check if cables are brittle or connectors aren’t properly plugged in. Anyone can update or check the inverter for faults using a smartphone. For cleaning the modules: ladder and mop. If you’re up there, you can also look underneath to make sure everything is still securely attached.

According to my calculations, the system pays off in 11.5 years, including depreciation, insurance, taxes, etc. If electricity prices rise, it becomes profitable even faster.

The quality of the arguments against photovoltaic systems made by some users here can also be clearly seen in post 24.

guckuck2 schrieb:

Post 24 includes an official transcript. The corridor is mentioned. Everything can be accessed on the German Bundestag’s website.

Well, I guess we just define facts differently – for months, it was possible to find detailed information everywhere about how, why, and when the car toll would be introduced, and with much more solid evidence...

guckuck2 schrieb:

You can also clearly see the level of arguments against photovoltaic from some users here in post 24

What is it that you all have against my quote from the RLP state parliament?