18 dairy farms in the Nowra Valley are partnering with Innovating Energy to collect their poo, turn it into methane (natural gas) and then into electricity to power their dairies. Collective dairy waste action like this for biogas Australia is likely to be a national first. https://www.southcoastregister.com.au/story/6809051/cow-poo-to-power-nowras-dairy-farms/
Under development since 2017, this liquid metal battery (LMB) is about to be let loose on the globe. Consisting of 3 liquid layers; 2 of molten metals and a middle layer of molten salts. The system is self-heating and insulated, but contains no combustible materials - so they can't burn. And they retain all of their charge capacity for at least 5000 cycles (think decades, not years). Modular, safer and cheaper than lithium-ion batteries. https://ambri.com/technology/