Motivation: max. utilization of building integrated photovoltaic for a 100% renewable energy system (high potential in Germany ≈160 GW) Problems: strong daily and annual fluctuations; possible low voltage grid and transformer overloading and voltage band violations. Storage demand: example: 4 MWh annual electricity demand and PV-production, requires: daily storage capacity of 2-32 kWh; annual storage capacity of >1000 kWh (only possible with a new synthetic chemical energy carrier (e.g. H_2 or CH_4).
展开▼
