By Sudarshan Varadhan

SINGAPORE (Reuters) -Australia’s renewable energy boom is leaving clean power unused due to transmission bottlenecks and slow battery deployment, industry officials say, signalling challenges across Asia as energy transition accelerates.

Wind and solar curtailments more than tripled in the nine months through September to 3.9 terawatt-hours (TWh), or 6.8% of renewable output, data from platform OpenElectricity showed.

Curtailments refer to the amount of wind or solar power that could have been produced but was pre-emptively rejected because a grid hit its limits.

Some solar farms in southeast Australia face potential curtailment of 35% to 65% by 2027, the Australian Energy Market Operator warned in July.

MIDDAY SOLAR FLOODING THE GRID

“Increasing solar curtailme

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