Around 1000 people in Canterbury remain without power today.

A build-up of snow and ice on lines, as well as tree branches being weighed down on lines, caused outages to around 4700 customers around the western areas of the Canterbury Plains yesterday.

Electricity lines company, Orion restored power to about 3000 customers yesterday, however around 1200 customers remained without power overnight.

This afternoon, around 1000 customers still remained without power, a spokesman said.

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Crews were continuing to work to restore power to those areas without today.

- NZME.