 OKLAHOMA CITY, March 24, 2021 GLOBE NEWSWIRE -- Mammoth Energy Services, Inc. Mammoth or the Company NASDAQ:TUSK today announced that its wholly owned subsidiary, 5 Star Electric, LLC 5 Star, has been awarded a street lighting upgrade contract by a major Midwest investor owned utility. The five-year contract is expected to generate up to approximately 30 million in revenue over the contract term. 