Liz Truss became U.K. prime minister on Tuesday and immediately confronted the enormous task ahead of her amid increasing pressure to curb soaring prices, ease labor unrest and fix a health care system burdened by long waiting lists and staff shortages. Truss took office Tuesday afternoon at Balmoral Castle in Scotland, when Queen Elizabeth II formally asked her to form a new government in a carefully choreographed ceremony dictated by centuries of tradition. It was the first time in the queen’s 70-year reign that the handover of power took place at Balmoral, rather than at Buckingham Palace in London. The ceremony was moved to Scotland to provide certainty about the schedule because the 96-year-old queen has experienced problems getting around that have forced palace officials to make decisions about her travel on a day-to-day basis. Truss, who refused to spell out her energy strategy during the two-month campaign to succeed Boris Johnson, now plans to cap energy bills at a cost to taxpayers of as much as 100 billion pounds ($116 billion), British news media reported Tuesday. She is expected to unveil her plan on Thursday. Johnson, who announced his intention to step down two months ago, formally resigned during his own audience with the queen a short time earlier. Truss, 47, took office a day after the ruling Conservative Party chose her as its leader in an election where the party’s 172,000 dues-paying members were the only voters. As party leader, Truss automatically became prime minister without the need for a general election because the Conservatives still have a majority in the House of Commons. But as a prime minister selected by less than 0.5% of British adults, Truss is under pressure to show quick results. — Agencies