The portfolio is made up. Britain's wind figures and market prices are real, from Elexon; the intraday prices and the battery's charge are simulated. Try a trade against it and see how the open position and its limit would change.
This page sends the trade to the app as a private task: a worker of its own adds it to the portfolio's trades, which repeat every day, and recalculates as Elexon's figures and the intraday prices change. Its results come back to this page only; nothing is published or shared. Sending another trade replaces this one. Stop, or leave the page, and the task and its worker are removed. Times are UK time.
Contains BMRS data © Elexon Limited copyright and database right 2026 (licence).