Firstly, he appears authentically angry at the failure to proceed with the Longannet carbon capture scheme.

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The track, which ends at Longannet power station, will also be used to transport freight.

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The first UK project was meant to be under way at Longannet in Scotland.

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It was also a lifeline for industry in Clackmannanshire, with freight travelling from the Dollar coalfield to Longannet power station.

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The renewable energy industry has published figures which, it claims, show Scotland is producing enough low carbon electricity to offset emissions from Longannet power station in Fife.

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Transport Scotland said the freight service would provide a more efficient route for coal from the west of Scotland to Longannet Power Station and reduce rail congestion on the Forth Bridge.

BBC: Train line reopens after 40 years

The biggest user of coal in Scotland is Scottish Power, which burns four to five million tonnes of the year each year at Longannet power station, and Cockenzie in East Lothian.

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Longannet was the trial site for carbon capture and storage, a technology that is yet to be proven commercially, but funding for that was withdrawn by the UK Government last October.

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Finally, a question from Lib Dem Lord Ezra on carbon capture led energy and climate change minister Lord Marland to explain the Longannet project was withdrawn because "financing was going off the dial".

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The two big plants are scheduled to close by then, with Cockenzie in East Lothian closing in 2015, with a planned conversion to new gas turbines, while Longannet in Fife is licensed to keep operating until around 2020.

BBC: Scotland's nuclear stations could stay open