The first large-scale hydroelectric plant in the UK for 50 years has had its first 24 hour period of full capacity operation.
Scottish and Southern Energy's Glendoe hydropower plant has operated at full 100 megawatt (MW) capacity round the clock.
The milestone came ahead of the project being formally commissioned and handed over to the company's operations division later this month.
It also came on the eve of SSE's tenth anniversary of being formed.
Chief executive Ian Marchant said he was "pleased that it [the milestone] should coincide with the tenth anniversary of SSE being formed, which takes place this weekend".
He added: "At that time, there was a risk that Scotland's hydro electric schemes would be left behind in the search for newer forms of green energy production. Since then, we have invested over £330m in refurbishing and developing hydro electric schemes in Scotland, giving this highly important technology a new lease of life."
According to the British Hydropower Association, hydropower has been in use in the UK for over a century and accounts for 1,500MW of renewable generating capacity.
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