AEMO says demand for electricity from households and businesses in WA is set to fall for the first time.

The Australian Energy Market Operator (AEMO) has issued a report saying it is no longer expecting the use of grid power to increase as the WA’s population grows.

The authority predicts demand will fall by almost 4 per cent between 2019–20 and 2027–28 due to the “extraordinary” uptake of rooftop solar power.

More than a quarter of the homes in AEMO’s the south-west grid now have a solar system.

AEMO says that proportion will exceed 50 per cent within a decade, with the amount of rooftop solar capacity rocketing from about 1100 megawatts to 2500MW.

That would make rooftop solar the biggest source of capacity in the grid by far.

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