According to his LinkedIn page, [Nova Scotia Independent Energy System Operator CEO Johnny] Johnston started and built his career in the methane industry. For over 21 years, he worked for National Grid plc, a British company that also owns utilities in the northeastern U.S.

By 2016, Johnston worked at National Grid’s SVP Gas Business Enablement, where he “Led the envisioning, development and delivery of an industry leading multi-$100M transformation, to deliver a step change in how National Grid serves its 7 million customers, how its 5,500 front line employees manage their work, and its engineers manage more than $10B in gas assets.”

After leaving National Grid, from August 2023 to August 2024 Johnston was a board member of the American Gas Association, which says that it “represents more than 200 energy companies that provide natural gas [methane] service to 189 million Americans.”