It's best to get it done before next summer's cooling season, when electrical demand peaks.

The patented process would save electric utilities from having to build new energy plants to meet temporary and erratic demand peaks, Mr. Chasek says, and it would ultimately reduce the cost of electricity.

These tend to arrive and depart within just a few hours of each day, as there is little accommodation in the Sound, leading to strong demand peaks for tourism services during the noon and early afternoon hours.

"Peak shifting results in lower emissions, because some of the plants used to meet demand peaks are among the dirtiest in the city," he said.

On the other hand, shallow loops are also cooled down much more readily by weather changes, especially during long cold winters, when heating demand peaks.

Rather than simulating a steady state of flow for a journey, transient "demand peaks" of congestion are simulated.

Plug-in electric vehicles offer users the opportunity to sell electricity stored in their batteries back to the power grid, thereby helping utilities to operate more efficiently in the management of their demand peaks.

For example, in the UK, the 1.7 GW Dinorwig pumped storage plant evens out electrical demand peaks, and allows base-load suppliers to run their plants more efficiently.

This consists of the cement manufacturer shutting down the plant at short notice when the power supplier expects a critical demand peak, in return for favourable prices.

In addition, the demand peak for the 43-regular occurs in week 10, which was only an average demand week for the 46-regular.