GUIDELINES FOR METERING CABINETS

Explosion-proof standards for battery energy storage cabinets
The NFPA 855 standard, developed by the National Fire Protection Association, provides detailed guidelines for the installation of stationary energy storage systems to mitigate the associated hazards. [pdf]
Outdoor installation requirements for outdoor energy storage cabinets
NFPA 855 only permits residential ESS to be installed in the following areas:Attached garagesDetached GaragesOn exterior walls at least 3 ft (914 mm) away from doors or windowsOutdoors at least 3 ft (914 mm) away from doors or windowsUtility closetsStorage or utility spaces [pdf][FAQS about Outdoor installation requirements for outdoor energy storage cabinets]

Portugal solar energy metering system
In 2019, a competitive auction for a new PV plant saw a worldwide record low bid of 14.76 per MWh, well below other generating technologies. The auction awarded 1.150 MW of solar capacity to various companies, significantly more than the total installed capacity at the time. A 2020 auction saw a price of €11.16 per MWh. Solar power interest is growing exponentially in Portugal. João Galamba, the State Secretary fo. [pdf][FAQS about Portugal solar energy metering system]