Plains End

Plains End I & II

Colorado, USA

231 MW

In early 2013, after acquiring the state-of-the-art Plains End I & II facility from Cogentrix, Tyr Energy became the owner of the largest natural gas-fueled internal combustion engine power plant in the USA.

During breakfast and dinner hours demand increases and the plant follows this perfectly. This is the way. This is the future.
Kent L. Fickett former Senior Vice President of PG&E National Energy Group (NEGT’s predecessor)
Plains End I & II - Colorado


Fluctuating output from wind generation

Harsh ambient conditions: high altitude and hot climate

Optimising return on investment

Increasing the reliability of the whole grid


Internal combustion engines with excellent ramp rates

Adding low-pressure gas plant with extremely high availability (>99.4%) to the generation mix

Engines insensitive to ambient conditions

Adding rapidly dispatchable plant to the generation mix


Superb operational flexibility & increased revenue from selling balancing capacity

Grid black start capability at
a very low cost & ability to keep
plant online even when the quality
of the gas supply suffers

Revenue from both the energy market and the ancillary service market – simultaneously

Full efficiency is reached
throughout the year

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Main data

   Customer   Tyr Energy (IPP)
   Type   Wärtsilä 34SG gas power plant
   Operating mode   Peak load / standby & emergency
   Gensets   20 x Wärtsilä 18V34SG + 14 x Wärtsilä 20V34SG
   Total output   231 MW 
   Fuel   Natural gas
   Scope   Equipment delivery (ED)
   Delivered   2001 & 2006

Downloads & links

Contact us

If you want to know more about the Plains End I & II project, please contact

Phil Rutkowski
Business Development Manager
Energy Business, Wärtsilä North America Inc.
Tel. +1 281 536 1444

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