Lights will stay on this winter, grid operator says after concerns The assurance from the National Energy System Operator comes amid concern from its engineers about their ability to ensure adequate supply.

Lights will stay on this winter, grid operator says after concerns The assurance from the National Energy System Operator comes amid concern from its engineers about their ability to ensure adequate supply. The assurance from the National Energy System Operator comes amid concern from its engineers about their ability to ensure adequate supply.