Under contract with the County of San Luis Obispo, Planning and Building Department (County), Aspen is assisting the County with application review, environmental review, and support with multi-agency coordination for the decommissioning of the Diablo Canyon Power Plant (DCPP), a nuclear energy power plant off the coast of San Luis Obispo County.

Units 2 and 3 of the San Onofre Nuclear Generating Station (SONGS) were shut down in January 2012. Unit 2 last operated on January 9, 2012, when it was removed from service for a planned refueling and maintenance outage.