[Micele]

Oorspronkelijk geplaatst door maddox

Net zoals windmolens is het niet zo moeilijk een kolencentrale minder stroom te laten leveren. Het is alleen inefficiënt al die stoom/hitte te dumpen.
Meer op korte termijn is lastiger, omdat kolen nu eenmaal fysiek in de ketel moeten geraken en verbrand worden. Maar het kan wel mits even wachten.

Windmolens kunnen alleen leveren als er:

• wind genoeg is
• vraag is

Vraag het eens aan de Denen wat ze over hun windenergie denken en wat ze ermee doen bij tekort of overschot (buurlanden)

https://en.wikipedia.org/wiki/Wind_power_in_Denmark
...
Electricity exports from Denmark

Annual wind power production is currently (2014) equal to about 39% of electricity consumed in Denmark.[2][3] The proportion of this that is actually consumed in Denmark has been disputed, as the considerable hydropower resources of Norway (and to some extent, Sweden) is used as grid storage with low loss. Hydropower can rapidly reduce generation whenever wind farms are generating power, saving water for later, and can export electricity to Denmark when wind power output drops. Short term, Denmark imports electricity from Norway during daytime and exports in nighttime. Long term, Denmark imports electricity in summer and exports in winter. Wind is higher in autumn and winter, when consumption is also high.[66] This service of timeshifting production and consumption is also found around the world in pumped-storage hydroelectricity balancing coal and nuclear plants.

For timeshifting trade with Norway, Denmark exports at DKK 157/MWh and imports at DKK 212/MWh.[32] The correlation is low between wind power in Norway and Denmark.[66] Market price sometimes falls to near or below zero, particularly in high winds and low consumption.[67] In 2014, there were 46 hours with negative prices, costing DKK 37.7 million.[68] In 2015, negative prices occurred in 65 hours in West Denmark and 36 hours in East Denmark - less than 1% of the time. Danish prices are mainly negative when German prices are even more negative. The 24 hour period of 2 September 2015 was the first such occasion when no central power plants were running in West Denmark, and grid stability was maintained by compensators.[2]

Denmark is generally a transit country for electricity trade between the much larger markets in Norway, Sweden and Germany,[69][70] and plans to add cables to the Netherlands (COBRAcable) and England (Viking Link) as well, further increasing the function of being a crossroads for electricity.

Claims of up to 40% of wind power being exported have been made,[71][72] countered by claims that only 1% was exported.[73]

According to the first argument, power in excess of immediate demand is exported to neighbouring countries at lower prices. Part of the benefit of this goes to Denmark's northern neighbours: when Denmark exports power, it is sold at the spot market price which must be lower than at the importing market in order to be transmitted.

According to the second argument, the correlation between exports and wind power is weak, and a similar correlation exists with conventional thermal plants running partly for district heating; meanwhile, causal analysis shows that export from Denmark typically occurs as a consequence of the merit order effect, when large thermal plants have reserve capacities at times the spot market price of electricity is high.

In any case, the export price is the intermediate between the prices of the two areas, so the exporting TSO (Energinet) uses the profit to relieve tariffs[74] at around DKK 500 million per year.[75] Wind power organizations state that Denmark exports power at a higher price than it imports at.[76]