The 345 MW San Roque hydroelectric Multipurpose Power Project in San Manuel, Pangasinan is a peaking plant that was constructed by a consortium composed of Marubeni Corporation, Sithe Philippines Holdings, Inc. and Italian-Thai Development Public Issuer Limited pursuant to a PPA with NPC under a BOT scheme.
The San Roque Power Plant utilizes the Agno River for peaking power, irrigation, flood control and water quality improvement for the surrounding region and comprises three power generation units of 115 MW each. The San Roque Power Plant provides an annual energy generation of 1,065 GWh from the 345-MW hydroelectric power plant, the irrigation of approximately 34,450 hectares of agricultural land, storage of water that would otherwise flood the Pangasinan plains, and improvement of water quality of the Agno River which, otherwise, would pollute the downstream rivers. On December 15, 2009, SPDC (San Roque) successfully bid for the appointment to be the IPPA for the San Roque Power Plant and received a notice of award on December 28, 2009. SPDC (San Roque) assumed administration of the San Roque Power Plant on January 26, 2010 in accordance with an IPPA agreement with PSALM.