Edgartown selectmen Monday congratulated the town police department for receiving state certification.

Police chief David Rossi and Lieut. Chris Dolby attended the board’s weekly meeting and showed a plaque awarded to the department from the Massachusetts Police Accreditation Commission last week to acknowledge completion of the lengthy certification process. Accreditation is voluntary and requires police departments to meet 159 standards. The process aims to promote accountability, enhance department reputation and provide a basis to judge performance for police departments.

Two years ago interim police chief Jack Collins recommended the department seek certification when he recommended Chief Rossi for the top post at the department and evaluated the police department as a whole.

“We started pretty much two years ago,” Chief Rossi said Monday, noting the variety of requirements, including an on-site assessment. Edgartown is now one of 93 police agencies in the state to receive certification. “So it’s quite an honor for our department,” he said.

“It’s a recognition of great work and we greatly appreciate it,” board chairman Arthur Smadbeck said, noting how quickly the process was completed. “I’m impressed with the speed.”

Certification is granted for a three-year period. Oak Bluff and West Tisbury police departments have also received certification through the program.

In other business Monday, selectmen agreed to take part in a new joint powers agreement for Cape Light Compact. The new agreement became necessary after Barnstable County opted out of continuing to serve as the administrative and fiscal agent for the compact, which is an energy services provider for the Cape and Vineyard.

Selectmen also approved a change for the liquor license for Isola restaurant. Outdoor seating on Church street is no longer part of the license.

Finally, they agreed to sign a letter to the federal Bureau of Ocean Management opposing the continued development of the Cape Wind project in Nantucket Sound and asking the department to rescind the company’s lease.

The long-planned Cape Wind project has languished amid an uncertain fate after a series of setbacks in recent years. The letter from the selectmen is in response to a recent draft of a supplemental environmental impact statement for the project. Last summer a U.S. Court of Appeals ordered the Bureau of Ocean Management to complete additional geological surveys before Cape Wind could begin construction. A comment period on the additional survey ends May 15.