The UK 's the National Grid has revealed the de-rating factors for solar and wind energy for participation in the Capacity Market and the proposed methodologies. An EFC is defined as the precise amount of perfectly reliable firm capacity a resource can displace while maintaining the exact same level of risk on the system. Greater levels of data regarding “long run average contribution” of weather resources enabled National Grid to update its notional power curves for onshore and offshore wind for the first time in the end of February . Onshore was given a de-rating of 8.2% to 9% , and offshore between 12.1 and 14.6% . However, a paucity of data for solar saw it given a de-rating of 1% to 2% , boosted from "almost negligible" by the use of storage technology.
The UK 's the National Grid has revealed the de-rating factors for solar and wind energy for participation in the Capacity Market and the proposed methodologies. Greater levels of data regarding “long run average contribution” of weather resources enabled National Grid to update its notional power curves for onshore and offshore wind for the first time in the end of February . Onshore was given a de-rating of 8.2% to 9% , and offshore between 12.1 and 14.6% . However, a paucity of data for solar saw it given a de-rating of 1% to 2% , boosted from "almost negligible" by the use of storage technology.