The collection comprises signed minute books. There are two directors' minute books covering April 1887-March 1948 (BEX 1). They contain information about the general operational activities and scope of the company. The minutes also record the customers that the company supplied electricity to.
There are also two shareholders' minute books covering February 1920-March 1948 (BEX 2). The shareholders' minute books record details of financial and share ownership aspects of the company.