This huge disparity indicates many new home owners will want to add an off-peak tariff once they have settled into their home.

However, this will result in additional costs for tradesmen and potentially a charge for a new meter, in addition to the missed savings from not having the economy tariffs in the interim.

The figures prompted us to include questions in a regular survey of customers and developers going through the connection process so we could better understand and address this anomaly.

Based on the survey results, 50 per cent of residential customers and more than 40 per cent of business customers and developers expressed an interest in receiving information and advice from Ergon about ways to make their new home more energy and water efficient.

Our customers are interested in homes and businesses that are energy smart, and we are interested in having more load under control.

By advising customers early in the construction process that they can achieve cost savings, like economy control tariffs and all electric homes, we can achieve outcomes that are beneficial for the customer and are also beneficial for the network.

Ergon already has a significant amount of information available online, including the Energy Sense Home, but we will be more proactive in providing this information to new build customers and the building and construction industry.

Economy tariffs are primarily used for electric hot water systems and pool filters because they don’t need a constant supply of power.

They can also be used for air conditioners, clothes dryers, dishwashers and other appliances if that suits a customer’s lifestyle and they may become a popular option for charging electric vehicles overnight at home.

Tariff 33, which provides a minimum of 18 hours of power each day, is about 15 per cent cheaper than the standard residential Tariff 11, while Tariff 31 offers a minimum of eight hours of power a day and is almost 45 per cent cheaper than Tariff 11.