By Olena Harmash KYIV (Reuters) – Ukraine’s power grid operator said on Tuesday severe winter weather left more than 1,000 towns and villages without electricity in nine regions and urged residents to conserve power as the energy system has been weakened by Russian strikes. Electricity consumption was at this week’s highest levels as temperatures fell to about -15 °C in many parts of the country, grid operator Ukrenergo said. “The consumption level continues to grow due to the considerable drop in temperature across the country,” it said on the Telegram messaging app, adding that electricity c…