Distributors own and maintain the power lines that transmit the electricity from the national grid to properties.
Your property has a unique National Metering Identifier (NMI) number identifying it on the Australian electricity network. You can find this on your current power bill somewhere under the invoice number. It consists of 10 digits, (but it may contain a few letters).
The wholesale market is known as the National Electricity Market (NEM). This is a regulated market and is operated by the Australian Energy Market Operator. Generators sell their power into this market and retailers and large industrial users buy their power directly from it. For more information see www.aemo.com.au.
Peak/off-peak metering involves two separate meters (or two registers on one meter), one of which measures ‘peak’ usage, and one of which measures ‘off-peak’ usage. This allows retailers to measure and charge different rates, for using energy at different times of the day.
A tariff is a way of pricing electricity based on the way your meter is set up. There are many different names for the various tariffs across the power industry. However, such names will normally indicate a time of use (e.g. peak or off-peak).
Kilowatt hours are a way of measuring power consumption. The electricity industry uses kWh to measure how much power you use, as do most companies that manufacture electrical products. When you shop for new electrical appliances, you may notice that most are labelled with both a star rating and the number of kWh the appliance will typically use per year. We measure the power you use every month in kWh.