National Gas Emergency Service Energy Assets Pipelines is a leading Independent Gas Transporter and Meter Asset Manager and as such we have a duty of care to our customers in providing a support structure in a gas emergency. Smell gas? Call the National Gas Emergency Service on 0800 111 999. Power Cut? As an Ofgem regulated Independent Distribution Network Operator (IDNO) we are responsible for the operation, maintenance, control, security and integrity of electricity networks. Call 105 or 0333 800 2016 if you are experiencing a power failure.