Locational differences in BM dispatch

Bid and offer dispatch rates vary around GB, and vary over time. Bid rates are typically higher in Scotland, where there is lots of wind, and offer rates are typically higher towards demand centres.

Here we have some example days of how BM dispatch can vary across the country on the same day.

An example day of battery operation for a site in **London**. A number of offers take place throughout the day, with a few bids overnight. Energy sold via offers in the BM is rebalanced by buying volume in intraday markets. This results in comparatively lower intraday revenues and higher BM revenues. — An example day of battery operation for a site in **London**. A number of offers take place throughout the day, with a few bids overnight. Energy sold via offers in the BM is rebalanced by buying volume in intraday markets. This results in comparatively lower intraday revenues and higher BM revenues (v3.4 of GB forecast).

The same day in **North Scotland**. There are far fewer offers, with more bid volume charging the battery cheaply. As a result, more volume is sold on intraday markets to maintain a balanced State of Charge. This results in comparatively higher intraday revenues and lower BM revenues (v3.4 of GB forecast).

The revenue breakdown is also different between different regions

As we see in the Modo Energy GB BESS Index, there are clear differences in the way batteries 'on the ground' are optimised, based on location. This article goes into some detail on why this is.