英国电网运营商警告称，从周二下午开始电力供应可能趋紧，且夜间风力发电量预计将进一步骤降。
The UK grid operator warned that electricity supplies may be tight from Tuesday afternoon, with wind generation set to plunge further overnight.
英国国家能源系统运营商（NESO）指出，伦敦时间下午3点至晚上11点之间可能存在1.9吉瓦的电力缺口，这一缺口幅度较周一晚间的初步预估有所扩大。
Britain’s National Energy System Operator flagged a potential shortfall of 1.9 gigawatts between 3 p.m. and 11 p.m. London time, a wider margin than in an earlier message late Monday.
此类预警旨在促使发电方提供额外产能，以帮助恢复电网的供应缓冲。
The warnings are designed to prompt generators to make additional capacity available and help to rebuild the grid’s supply cushion. NESO often withdraws the notices once extra power has been secured.
随着寒冷天气推高需求，风力发电对于维持系统平衡变得愈发重要。
With colder weather lifting demand, wind generation becomes increasingly important for keeping the system balanced. Sharp swings in forecasts can quickly leave Britain more reliant on gas-fired power plants to fill the gap.
由于预测波动剧烈，英国可能被迫更加依赖天然气发电厂来填补缺口。
The outlook for wind generation later Tuesday deteriorated overnight. Output is now forecast at just 2.2 gigawatts at 6 p.m., according to market operator Elexon, about 40% below the forecast a day earlier and just a quarter of this year’s average.
根据市场运营商Elexon的数据，周二晚间6点的风力发电量预计仅为2.2吉瓦，较前一日的预测下降了约40%，仅为今年平均水平的四分之一。NESO表示将于伦敦时间中午再次评估情况。
NESO said it will review the situation again at noon London time.