Written questions by Onwurah.

Which organisation is responsible for ensuring the connection of large energy user buildings.

Depending on the capacity they require, large energy users can connect to either the low-voltage distribution network or the high-voltage transmission network. The networks are owned by private companies that are solely responsible for ensuring the delivery of connections and regulated independently by Ofgem. The distribution network is owned and operated by six Distribution Network Operators across Great Britain. The transmission network is owned by three Transmission Owners and operated by the National Energy System Operator.

Whether he has had discussions with Ofgem on guidance to energy companies on the maximum credit they can hold of their customers' funds before reducing the direct debt or offering a refund.

Ministers have discussed with Ofgem the need to drive higher standards of service for energy customers. Ofgem requires suppliers to ensure that payments are set to avoid building up excessive credit balances, including taking regular meter readings. Excess credit balances should be refunded promptly, upon request. Direct debit payments are designed to be flat across the year, meaning that energy accounts tend to build up a credit balance over the summer, when energy use low, with the reverse occurring over the winter months.