The Chevron refinery in Richmond released 100 workers Thursday following a Contra Costa County Superior Court judge’s ruling Wednesday ordering the refinery to stop construction of its Energy and Hydrogen Renewal Project, Chevron spokesman Brent Tippen said.

The refinery expects to release a total of about 1,000 workers over the next 60 days as it demobilizes construction activities at the plant, Tippen said.

Tippen estimated that the ruling would result in a loss of about 1 million labor hours and approximately $50 million to $75 million in income to the workforce in Richmond and the county within the next year.

The city will also lose $61 million in various community benefits, Tippen said.

Tippen did not disclose how much money Chevron is expected to lose as a result of the order, but said that construction of the hydrogen plant and hydrogen purity components had been well underway. Construction of the new cogeneration facility hadn’t yet begun.

The project, which broke ground in September after a permitting process that took more than three years, included replacing the refinery’s 1960s-era hydrogen plant and its 1930s-era power plant. The Richmond City Council finally approved the project by a 5-4 vote.