Photovoltaic system: Costs, saving potential? - Experiences?

... and a huge consumption. Saving 700€ through energy consumption means at least 2500kWh in a rough calculation (i.e., under the assumption that self-generated electricity is free). That amount must first be produced and also consumed during the mentioned period of the year.

Is it already clear whether anything significant will change for photovoltaics starting in 2021? I haven’t dealt with the topic in detail so far, but the VAT reduction will free up capital again. Are there arguments for doing it quickly in 2020? The house will be finished in July, preparations have been made (4 photovoltaic cables (1*4mm2) in protective conduits and 16mm2 grounding cable + expansion of the meter cabinet, preparation for a system with two strings). Gable roof 38°, facing south we did not have any skylights installed.

When the lid will fall is not clearly determinable, but it will probably be reached by the end of the year. The government has only announced that there will be a successor arrangement, but not yet what it will look like.

When the cap will be reached is not clearly determinable, but it will probably be reached by the end of the year. The government has only announced that there will be a successor regulation, but not yet how it will look.

The abolition of the cap is part of the economic stimulus program. Measure 38.

I would saddle up as quickly as possible. The feed-in tariff is decreasing and decreasing.

Ok, thanks. Then I'll start reading into it - has anyone had good experiences with a solar installer in Berlin/Brandenburg?

When the lid falls, on what basis is the EVG then determined? Are there already calculation models for that?