Exhibit 99.1

Extract of Commercial Register of RWE Supply & Trading GmbH

Number of entry	a) Company name b) Registered office, place of business, domestic business address, person entitled to receive, branch offices c) Object of the company	Nominal or share capital	a) General powers of representation b) Management board, governing body, executive directors, personally liable partner, managing directors, authorised representatives and special powers of representation	Prokura (authority to act on behalf of the principal in respect of all transactions in and out of court in scope of mercantile trade)	a) Legal form, commencement, (Memorandum and) Articles of Association b) Other legal relationships	a) Date of entry b) Remarks
1	2	3	4	5	6	7
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96				Joint Prokura together with a managing director or another Prokura holder: Rees, Michael William Maxwell, Devizes (Great Britain), born 17 March 1967 Suleman, Mohamed Shabir, Swindon (Great Britain), born 29 February 1964 Glibbery, Richard James, Swindon (Great Britain), born 17 March 1980 Humphries, Terri Louise, Marlborough (Great Britain), born 25 November 1973 Patterson, Julian, London (Great Britain), born 18 November 1972 Coleridge, Adrian, Berkhamsted (Great Britain), born 13 December 1974		a) 30 September 2013 Werner
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118				Joint Prokura together with a managing director or another Prokura holder: Ullrich, Christina, Düsseldorf, born 20 October 1976 Dr Papamantellos, Kostas, London / United Kingdom, born 4 December 1971 Papadopoulos, Harry, New Jersey / United States, born 30 April 1960		a) 7 May 2018 Gieseler