IL SB3794

Counties and municipalities are prohibited from adopting or enforcing ordinances, rules, or other measures that regulate the installation or inspection of residential energy backup systems, including on buildings with shared roofs.

"Residential energy backup system" is defined as a backup energy system at a residential property capable of providing no more than 50 kilowatts of electricity or having storage capacity of no more than 200 kilowatt hours, including all associated infrastructure and components.

The preemption applies to any building with a dedicated electrical connection to a utility or a dedicated electrical meter, including multi-unit buildings with shared roofs.

The stated legislative intent is to provide reliable, low-cost energy to Illinois residents, strengthen the electric grid, and promote renewable energy by facilitating deployment of residential energy storage systems.

Effective date: June 1, 2026.