Battery energy storage systems store electricity for later use, commonly paired with solar PV to maximise self-consumption and provide backup power.
Battery storage systems (also called home batteries or energy storage systems) store electrical energy for use when needed. When paired with solar panels, they allow homeowners to use solar-generated electricity after sunset.
Battery systems affect DNO application requirements:
| System Size | Application Type |
|---|---|
| Solar + battery under 3.68kW total | G98 notification |
| Solar + battery over 3.68kW | G99 application required |
| Battery-only systems | May require G99 depending on size |
For batteries to qualify for certain incentives, they should be:
Solar photovoltaic systems convert sunlight directly into electricity using semiconductor cells, enabling homes and businesses to generate their own renewable power.
G99 is the engineering recommendation governing the connection of generation equipment to distribution networks, requiring DNO approval for systems over 16A per phase.
Microgeneration Certification Scheme certification is required for installers to provide renewable energy systems that qualify for government incentives and feed-in tariffs.
The Smart Export Guarantee requires licensed electricity suppliers to offer payment for exported renewable electricity from small-scale generators like solar PV.