US-based Tucson Electric Power (TEP) has issued a request for proposals (RFP) seeking a contractor to carry out engineering, design, and construction work for a new reciprocating engine power generation plant in Arizona.
The plant will feature ten natural gas internal combustion engines, with a combined power generation capacity of up to 200MW.
Planned to be built near TEP’s H Wilson Sundt Generating Station on its Irvington Campus, the power plant is expected to help provide reliable electric services and expand the use of renewable energy in Tuscon.
Half of the proposed units are expected to be commissioned by mid-2019, while the remaining units are set to be brought into service by mid-2021.
TEP president and CEO David Hutchens said: “The addition of these efficient natural gas resources will help us to preserve safe, reliable, and affordable service for customers as our community continues to expand its reliance on renewable energy.”
Once commissioned, the new units are expected to replace two of four steam generator units currently in operation at Sundt Generating Station. The new installations will also help reduce operating costs and improve the plant’s emissions profile.
Reciprocating engines are said to be cost-effective, helping compensate for power fluctuations and other issues associated with the expansion of renewable energy resources. This includes solarpower systems and the company’s own community-scale solar and wind projects.
In addition, TEP will be able to provide at least 30% of its power from renewable resources by 2030, which is double the state’s 2025 goal.