It’s designed to cope with ‘rush hour’ periods of demand such as cold winter mornings or evenings when everyone’s using their lights, heaters and kitchen appliances at once. Or in the middle of summer when air conditioning, fans and irrigation pumps are running flat out.
Increasing New Zealand’s network capacity to cope with these peak demands would be an extremely costly exercise (and the extra capacity wouldn’t be used 98% of the time). So instead, lines companies such as ourselves use load control to help reduce demand on our individual networks.
The need for load control is driven by a combination of voltage and capacity requirements, cost avoidance for using Transpower assets, and emergency events. It’s not uncommon for some or all of these reasons to be in play at the same time.
During periods of load control if you have anything connected to your meter relay (‘ripple control) for example, your hot water cylinder this will be turned off until load control ceases.
There are three ways to tell when load control is in operation: