An IGCC or “clean coal” plant actually combines three distinct technologies – a gasifier, a combustion turbine and a steam turbine. In the first phase, gasification, coal is heated to produce a gas. In phase two the gas turns a turbine (similar to a high-powered airplane engine) to make electricity. In phase three the excess heat from the turbine is captured and used to boil water to make steam, which is then used to make electricity. [PDF]
Issues: Coal in the Northwest
The Northwest is blessed with bountiful energy efficiency and renewable resources – enough to meet all projected increases in electricity needs several times over. Despite this, coal plants are being proposed across the Northwest. In this section you’ll find information and the newest updates on this issue.
Victory for clean energy activists:
Proposed Kalama coal plant off the table
After years of trying to sell its massively polluting proposed coal-powered plant as a clean power solution, Energy Northwest has finally thrown in the towel on the Pacific Mountain Energy Center (PMEC), the proposed 793-megawatt coal-powered facility in Kalama, Wash.
Wind power costs on the rise?
Not nearly as much as coal, gas and nukes
We keep hearing how the costs of new renewable power – especially wind power – are going up. Fact is, the cost of wind power is rising far less than costs for coal, natural gas or nuclear power.