In conclusion, safer alternatives such as LFP, sodium-based, zinc metal, and flow batteries are increasingly viable for solar energy storage, offering enhanced safety and sustainability over conventional lithium-ion chemistries while addressing supply chain and environmental concerns. . In conclusion, safer alternatives such as LFP, sodium-based, zinc metal, and flow batteries are increasingly viable for solar energy storage, offering enhanced safety and sustainability over conventional lithium-ion chemistries while addressing supply chain and environmental concerns. . – They have a lower environmental and human health impact, better aging and lifespan, and superior peak power ratings compared to common lithium-ion batteries. – Their enhanced thermal stability reduces fire risks, making them safer for solar energy storage applications. Sodium-based Batteries –. . While lithium-ion batteries dominate the energy storage market due to their high energy density and fast charging, concerns about thermal runaway and fire risk have prompted exploration of safer alternatives. Frankly, the first three categories (lithium-ion, LFP, and lead-acid) make up a vast majority of the solar batteries. . Geopolitical tensions and new tariffs have introduced fresh uncertainty and cost into the battery supply chain, particularly for lithium iron phosphate (LFP) cells imported to the US from China.