Of that million they estimate that approximately 700,000, or 70%, of those customers, could lose their gas supply.
The alert comes after a gas line explosion near Prince George on Tuesday night, causing two Enbridge pipelines to be shut off.
The incident forced the evacuation of several homes in the Lheidli T'enneh First Nation, but most of the roughly 100 residents have been allowed to return home.
Gas prices could jump in the Pacific Northwest due to a natural gas pipeline explosion. There are no reports of injuries, he said.
Natural gas customers in B.C. and Washington State are being asked to curtail their energy demand after an explosion of a natural gas pipeline in central British Columbia that could disrupt supply.More news: 'Gay cake' case: Supreme Court rules Ashers did not discriminate against customer
The natural gas shortage itself affects customers throughout British Columbia, Washington and Oregon. He also said people north of the Lheidli T'enneh reserve have been evacuated.
The Enbridge website describes its almost 2,900 kilometre natural gas pipeline as capable of "transporting approximately 55 per cent of the gas produced in the province", and "the backbone of B.C.'s natural gas industry since 1957".
An evacuation order had been downgraded Wednesday to the handful of homes near the explosion site.
"I know the priority is to keep the residents in B.C. being able to use natural gas - it's the industrial users that take the hit when this kind of thing happens and that's completely understandable", said Sampson.
Puget Sound Energy asked its customers in a tweet on Wednesday to conserve natural gas.More news: Tropical Storm Michael could form late Sunday, hit the USA midweek
"We thought it might have been a train crash or a low-flying jet", he said.
A memo circulated from UVic's facilities management division noted the university has already switched its central heating system to diesel from natural gas, and has suggested staff and students bring warmer clothes to work and class.
'Enbridge has teams on the ground in the area and has mobilized additional response crews to maintain ongoing safety, ensure the needs of area residents are being met, and support the investigation [into the cause of the explosion]'.
"We can advise the fire on the pipeline has been extinguished, the line has been isolated and fully depressurized, Barnes said".
Meanwhile, Fortis BC told NEWS 1130 that none of its pipelines had been damaged in the fire but that they will continue to monitor the situation. "For some reason or another the gas had stopped flowing and it built up and it just exploded", Frederick said.More news: Dow has worst day in eight months as it drops 800 points
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