Question to the HM Treasury:

To ask Mr Chancellor of the Exchequer, what estimate he has made of his Department's consumption in kWh of (a) gas and (b) electricity in each month since June 2010; and what the cost of such consumption has been in each such month.

The information is not held by HM Treasury in the format you requested. Annual consumption and spend data is available in the Treasury Annual Report and Accounts for each year, copies of which have been deposited in the library.