Swedish P1 Radio had a broadcast this morning where wind turbine owners in southern Sweden were interviewed. Wind turbines in Southern Sweden operate at an average capacity of about 25% but when the wind blows in in Sweden it usually blows in Denmark as well. As Denmark builds more subsidised but intermittent wind turbines they become more dependant upon the import of hydro and nuclear power from Sweden and Norway.
It could be a dark future for wind power, at least for wind power owners in southern Sweden. As wind turbines multiply, the surplus power when the wind blows reduce prices and wind turbine revenues are reduced drastically.
The Marketing Director for Lunds Energi said that they had no plans for building any more wind turbines to add to the 6 small wind turbines they already had. There was no chance, he said, of the Danes importing wind power from Sweden when the wind was blowing for then they had their own power. And when the wind was not blowing and prices were better there was no power to sell!
Kjell Jansson, the Managing Director of Svensk Energi was also interviewed and pointed out that electricity could not be stored except as hot water. Therefore using surplus wind energy to store in heating systems was at best a partial solution but did not help the fact that industry and people needed electricity as electricity – and not just as hot water. Even the planned Danish solution of using surplus power to “charge up” heating systems for district heating as hot water or for “charging up” electric cars relied on having electricity – from nuclear and hydro power from Sweden and Norway – available to be imported for the Danish electricity system.
Therefore, he continued, when the wind did not blow in Denmark – and then usually did not blow over the whole of Scandinavia – the high electricity price was an advantage for the hydro and nuclear generators. In any case this would require much more investment in transmission systems and in hydro power generation.
But I can see a situation where Denmark will pay swingeing prices for imported electricity when the wind is not blowing and a cold wave is sweeping across Europe. And if it is a really severe cold wave then there may be no electricity available for import.