> Rule 64-918 (1) further prohibits ESSs with storage capacity greater than 1 kWh or utilizing lithium-ion batteries from being installed in dwelling units.
The reasoning for that rule is "fire hazard". There is zero exceptions.
The 2024 edition has 2x 20kWh allowance in a 1h fire proof room spaced 1m apart. And you need a series of fire prevention tools like an extinguisher and such. But that is not yet implemented.