Even after the EEG reform, most photovoltaic systems on buildings are economical to operate. sonnen GmbH from Wildpoldsried offers a "sonnenFlat". This is particularly interesting for those who already have a PV system and are thinking about adding a battery, but also for anyone planning to purchase a PV system in 2017.
On the following website you can have a look at the offer and the calculations: sonnenFlat
Keywords: Construction and operating costs, DE-News, Energy storage, Renewable, Climate protection, PV, PlusEnergy house/settlement, Electricity storage, Ecology, Economics