A partnership plans to construct two waste-to-energy facilities in Puerto Rico.

The wholly owned subsidiary of Primoris Services Corp., Primoris Renewables, will work with Synergy Renewables to begin construction this year and begin operations in the fourth quarter of 2013.

No construction price was given in a news release. Both companies are based in Dallas. Primoris said it expects the facilities to generate revenue for the company of about $40 million.

The partnership, along with Dynamis Energy LLC, based in Boise, Idaho, plans to build waste-to-energy projects worldwide.

The two facilities in Puerto Rico will use a proprietary process to gasify approximately 180,000 tons of municipal solid waste annually to generate 10 megawatts of energy at each site. The facilities will be developed along with Sunbeam Synergy LLC, which is owned in part by Dynamis and Synergy.