SDIC Power's (SHA:600886) total power generation during the first half declined 0.5% year on year to 77.1 billion kilowatt hours, according to a Shanghai bourse filing on Tuesday.

The Chinese energy company's grid-connected electricity also slipped 0.3% year on year to 75.2 billion kWh during the period.

For the second quarter, the company's controlling subsidiaries generated 38.1 kWh, a 0.5% increase from the prior year. They also supplied 37.1 billion kWh to the grid, up 0.6% from a year earlier.