Some suppliers (e.g., Octopus Energy) offer half-hourly tariffs whose rates track the day-ahead wholesale market and are published daily. Prices usually fall wh

Some suppliers (e.g., Octopus Energy) offer half-hourly tariffs whose rates track the day-ahead wholesale market and are published daily. Prices usually fall when supply is abundant (e.g., windy/sunny periods) Day ahead pricing: https://agileprices.co.uk/ https://agileprices.co.uk/ National grid supply/demand and energy mix: https://grid.iamkate.com/ https://grid.iamkate.com/