The black backsheet can absorb more heat than a white one, and higher temperatures can slightly reduce efficiency. However, advancements in cell technology and module construction have largely mitigated this effect.
This whitepaper discusses updated requirements outlined in NFPA 855 §9. 7 Explosion Control and Prevention for lithium-ion BESS, and is focused on the addition of the commissioning, inspection, and testing requirements for the NFPA 69 Combustible Concentration Reduction (CCR).