tem.

tem. is a London-based energy technology company founded in 2021 that has built AI-powered transaction infrastructure for buying and selling clean electricity directly between businesses and renewable energy generators. The company operates two core products: Rosso, a transaction engine that matches buyers and sellers of electricity, and RED, a neo-utility layer that handles the underlying energy market complexity. tem's platform has facilitated more than 2TWh of energy transactions for over 2,600 businesses across the UK, delivering energy cost savings of up to 30%. The company's mission is to put transparency and fairness back into energy markets, which currently extract over $1 trillion annually through inefficiency and opaque intermediary markups. tem raised $75M in Series B funding in February 2026, backed by Lightspeed Venture Partners and Revent VC, to scale its AI energy infrastructure globally.