It also acquired ENER-G Cogen International Limited ("ENER-G Cogen"), an established supplier and operator of combined heat and power (CHP) systems and REstore NV, Europe's demand response aggregator. In June 2017, it was announced that the CQ Energy Canada Partnership, the Canadian exploration & production joint venture in which Centrica plc owned a 60% interest, was to be sold to a consortium comprising MIE Holdings Corporation, The Can-China Global Resource Fund and Mercuria for a purchase price of C$722 million (£413 million) in cash. On 21 June 2017, the company agreed to sell its operational Langage and South Humber Bank combined cycle gas turbine power stations, with a combined capacity of 2.3GW, to EP UK Investments Ltd for £318million in cash. On 11 December 2017, Centrica combined its North Sea exploration & production business with Bayerngas Norge, to form a joint venture named Spirit Energy with the German, Austrian and Swiss owners of Bayerngas, led by German energy and infrastructure firm Stadtwerke München (SWM). In December 2017, the Competition & Markets Authority agreed to grant Centrica plc and Centrica Storage Limited's (CSL's) request to be released from the Rough Undertakings. CSL decided that it could no longer operate Rough as a storage facility as the facility was no longer capable of safe injection operations due to its age and condition and that due to the economics of seasonal storage, neither refurbishing or rebuilding the facility would be cost-effective. The British Gas brand lost 750,000 domestic customers in 2017 amid intense competition, contributing to a February 2018 announcement that 4,000 jobs would be cut. Centrica cut its dividend in July 2019, after making a loss of £446 million in the prior six months. In the spring of 2020, following the onset of the coronavirus pandemic, offices and factories shut and energy use decreased sharply, and the financial problems caused by the pandemic among Centrica's customers were expected to lead to bad debts. Analysts dropped their estimate of Centrica's earnings for 2020, 2021, and 2022 by 30%, and Centrica paused its search for a buyer for its 69% stake in Spirit Energy. The share price in April reached a record low of £0.30, valuing the company at less than half of its net debt of nearly £4bn. In June 2020, Centrica's shares were moved from the FTSE 100 to the FTSE 250 Index.