The revenue declined 12.5% to GBP8.04 billion for the first half compared to GBP9.1 billion in the same period of the previous year. The operating income for the first half of the year was GBP0.71 billion compared to operating loss of GBP0.18 billion in the prior year period.

Lord Smith of Kelvin, chairman of SSE, said: “We are now more than 18 months into our five-year, GBP6.7 billion programme of investment in electricity generation, energy networks and gas storage. This investment programme is supported by our carefully-maintained balance sheet, with a successful bond issue in September taking to over GBP3.3 billion the amount of medium- and long-term finance we have secured in the past 18 months.

“Creating value from investment and enhancing value from operations remain central to delivering SSE’s goal of sustained annual above-inflation increases in the dividend. Today’s 6.1% increase takes our interim dividend to 21 pence per share and means we are on course to deliver a full-year dividend of at least 70 pence per share.”