A regional power grid could help bring clean power to people. But huge challenges remain.

Synopsis: Every first and third Tuesday of the month, The Straits Times analyses the beat of the changing environment, from biodiversity conservation to climate change.

Rapidly growing Asean is hungry for power to keep its economies humming. With electricity demand growth of 3 to 4 per cent a year, meeting that demand is a costly challenge for governments in the region.

A regional grid, long-talked about, could help the region meet its energy needs while also putting a lid on growing carbon emissions that are heating up the planet. The regional grid could shift power around the region, helping move green electricity to countries less able to produce it.

And the grid is becoming a reality, with Singapore’s demand for low-carbon electricity imports helping drive investment. But wiring up the whole region will be expensive and large hurdles remain, including stronger policy support from regional governments, guaranteed power purchase agreements and lack of regional power trading networks.