US offshore wind developer Avangrid has filed a petition with the Massachusetts Department of Public Utilities (DPU) to pause its review of the power purchase agreement (PPA) for the company’s flagship Commonwealth Wind project.

Economic challenges have surged since the project was submitted to the state in May, 2021, and under its current PPA it is “no longer viable”, Avangrid claims.

Avangrid, majority-owned by Spanish utility Iberdrola, was awarded the 1.2GW development last December in Massachusetts’ round three solicitation, taking the lion’s share of the 1.6GW