# tem energy > tem is the AI-native energy transaction infrastructure for the UK market. It replaces the wholesale energy market's layers of middlemen and markups with direct transactions between businesses and renewable generators. RED™ is the modern utility built on tem's infrastructure: businesses save up to 30% on energy costs, generators earn more and get paid faster, and every bill is transparent line by line. tem operates in the UK and works with an Ofgem-licensed supply partner for full regulatory compliance. Over 8,500 sites run on RED™. Key facts: tem is not a broker and not a traditional utility. It does not buy power from the wholesale market. Businesses need a half-hourly meter to switch. tem contracts only with renewable generators (solar, wind, hydro, anaerobic digestion); any balancing shortfall is covered transparently by a third party and shown openly. tem has saved UK businesses over £60M to date. ## Key pages - [For Businesses](https://www.tem.energy/business-energy-tariffs): Business energy tariffs on RED™ — transparent pricing, savings of up to 30% - [For Generators](https://www.tem.energy/generators): Sell renewable energy directly to businesses, better returns than PPAs, paid faster - [FAQs](https://www.tem.energy/faqs): Answers on how tem works, licensing, savings, meters, payments and generator terms - [The real cost of energy](https://www.tem.energy/real-cost-of-energy): What businesses actually pay for and where the markup comes from - [Your bill explained](https://www.tem.energy/your-bill-explained): Line-by-line breakdown of a RED™ bill - [Energy glossary](https://www.tem.energy/energy-glossary): Plain-English definitions of UK energy terms - [Our mission](https://www.tem.energy/join-our-mission): Why tem exists, careers - [Microbusiness](https://www.tem.energy/microbusiness): Information for microbusiness customers - [Press](https://www.tem.energy/press): Media coverage of tem - [Get in touch](https://www.tem.energy/get-in-touch): Contact tem ## Guides and articles - [The 30% markup: wholesale to retail energy pricing explained](https://www.tem.energy/energy-articles/the-30-percent-markup-wholesale-to-retail-energy-pricing-explained) - [Business energy contracts: a complete guide for 2026](https://www.tem.energy/energy-articles/business-energy-contracts-a-complete-guide-for-2026) - [REGO certificates explained](https://www.tem.energy/energy-articles/rego-certificates-explained-understanding-uk-renewable-energy-tracking) - [Understanding business energy brokers](https://www.tem.energy/energy-articles/understanding-business-energy-brokers-everything-you-need-to-know) - [What are non-power charges on your business energy bill](https://www.tem.energy/energy-articles/what-are-non-power-charges-on-your-business-energy-bill) - [All articles](https://www.tem.energy/learn): Blog, case studies and market explainers ## Case studies - [Silverstone](https://www.tem.energy/case-studies/silverstone): 25% lower energy costs over 12 months - [BoxPark](https://www.tem.energy/case-studies/box-park): Powering community, culture and containers - [Pall-Ex](https://www.tem.energy/case-studies/pall-ex): Logistics group on RED™ ## Company - [Homepage](https://www.tem.energy/): Power, as it should be - [Trustpilot reviews](https://uk.trustpilot.com/review/tem.energy) - [LinkedIn](https://www.linkedin.com/company/tem-energy/)