Home battery / residential ESS
Home battery (residential ESS): LiFePO4 or NMC battery pack with inverter (hybrid or AC-coupled) storing solar overproduction and returning it during evening peaks or grid outages (backup mode). Standard 5-15 kWh per dwelling. Must comply with NEN 1010 §551 (generation) plus TNL grid code for export limits and islanding.
Home battery (residential ESS): Under dynamic tariffs, a 10 kWh battery charges cheaply at night and discharges during evening peaks — payback period 6-9 years depending on price spread.
Home battery (residential ESS) Common mistake: Connecting a home battery without verifying grid code requirements for island mode and power export limitation—during a grid outage, the installation may unintentionally feed voltage back into the grid.