The collection comprises signed minute books. There are seven directors' minute books (BEDN 1) covering 1901-1948. They record the proceedings of the meetings of the company's board of directors. The early books concentrate on the financial and share aspects of the company while the later volumes offer more detail on the company's power generation and supply activities.
There are also two shareholders minute books covering 1908-1948 (BEDN 2). They contain minutes of meetings to which shareholders were invited to attend along with accompanying copies of accounts, lists of shareholders and notices of meetings.