The future of a Kincardine power station is under threat due to high connection costs.
First Minister Nicola Sturgeon has demanded assurances from Prime Minister David Cameron over the future security of Scotland’s electricity supplies.
The call comes in response to news the coal-fired Longannet power station could face closure unless National Grid connection costs are lowered for operators Scottish Power.
East Falkirk MP Michael Connarty said: “The main problem is the transmission costs are extortionate and I’ve raised this matter before.
“They say Longannet will go out of commission in 2020, but if it is forced to close now it would be a disaster.
“It’s still generating an income, but we could soon sadly be importing our electricity from England.”
Falkirk East MSP Angus MacDonald also had concerns for staff at the site.
He said: “A large number of my Falkirk East constituents work at Longannet, so this news will be particularly worrying for them.
“Longannet supports around 260 jobs and is vital for energy supply across the country. It is simply unacceptable for the plant’s future to be put under threat by Westminster’s unfair transmission charging scheme.”
Mr MacDonald said the transition charges imposed by Westminster are costing Longannet £40 million per year.