The ambitious plan for a $1 billion energy complex and data center at the old Stanley Works industrial complex in New Britain appears to be back on track after a long hiatus triggered by the pandemic. EIP LLC has changed financing, brought in a different fuel cell supplier and rewritten the plan for where it will operate its energy production equipment, but plans to begin work on the project this year if regulators sign off. The company told the Connecticut Siting Council in October that this stage of the 10-year project will cost $75 million to $80 million. Future stages would expand the fuel cell farm, renovate the six-story building as a massive data center and construct new offices across Curtis Street. The Siting Council will issue a decision by March 8, and Stewart anticipates that the utilities regulatory authority will follow fairly soon after that.