
Octopus Energy Group is a British group. It was founded in 2015 with the backing of , a British asset management company. Headquartered in London, the company has operations in the United Kingdom, France, Germany, Italy, Spain, Australia, Japan, New Zealand and the United States. Octopus is the UK's largest supplier of electricity to domestic customer.

日本再生可能エネルギーインフラ投資法人(にほんさいせいかのうエネルギーインフラ- )は、港区に本部を置く。上場のであった(2022年8月22日で上場廃止)。