Energy is a fundamental requirement for today’s society. We need Electricity to power our cities and factories. Failure of power supply for even a short period causes chaos and results in significant economic problems. From generating the electricity from both fossil and renewable sources to distribution to metering of the power data communications is vital. By definition high voltages in cables create electrometric fields that are disruptive to data communications so any networking solution must be designed to operate in these harsh conditions. Data Communications allow us the control we need to guarantee enough power is generated to meet demand however by creating massive networks we create a risk which must be addressed with adequate cyber security.