The result is a substantially modified agreement between offshore wind developers Ørsted-Eversource, the Connecticut Port Authority and State Pier operator Gateway that likely will cost more than the $93 million originally projected. Ørsted-Eversource are seeking to use the pier in conjunction with their Revolution Wind Farm in federal waters south of Martha’s Vineyard, which will supply 300 megawatts of offshore wind power to Connecticut. But, officials say, that requires a major remaking of the facility. Gateway, selected by the port authority last year to run operations at State Pier, would provide access to the facility for redevelopment. The port authority’s board went into executive session at Tuesday’s meeting to discuss the outstanding issues being negotiated, such as cost share and timing.