Is it true that doing laundry at peak hours makes difference in electricity and water consumption more?
There is a little truth here combined with a little misunderstanding. Fundamentally, using appliances during peak load periods does result is a very slight increase in the total energy that must be supplied from the grid. The system has an inherent efficiency – and if the total load is greater, so is the amount of energy lost through inefficiency. In most systems, losses are quite small – typically 5% or less, so the incremental losses due to operating appliances during peak load periods rather than off-peak periods is actually quite small – but for the purists out there, it’s real. On the other hand, at any point in time the amount of generation on the system must match the total load. In general, generation is dispatched in ‘merit order’ – that is, the lower cost, most efficient sources are used first, and then higher cost, less efficient units are added to make up the total. So operating appliances – or any other loads that can be easily scheduled – during periods of peak load requi
