Price structure has to change

BETWEEN 7.30am and 5.30pm on June 28, the wholesale price of electricity was negative - at one point, reaching minus £50 per megawatt hour. Buyers were being paid to take it. That compares with an average price of electricity of £82/MWh over the last year.

- Cathy Slaughter

At times, we were exporting 12% of the electricity we were producing and only 8.5% was being generated by fossil fuels. Excess electricity was being used to pump water uphill here and in Norway so that hydroelectric turbines could give us energy when demand increased.