The owner of the UK's biggest coal-fired power station has unveiled plans for a £100m project aimed at cutting carbon emissions.
About 600 people are employed at the plant
Drax will revamp turbines at its plant in Selby, North Yorkshire, in a bid to improve efficiency by 5%.
In August protesters tried to shut down the plant, claiming it was the "largest emitter of carbon dioxide in the UK".
Drax said the turbine changes would be the equivalent of taking 275,000 cars off the road.
The work is expected to take place over five years between 2008 and 2011, and the firm said it was in the final stage of negotiation with a preferred supplier.
It is thought the turbines will save 500,000 tonnes of coal each year because it will be able to burn supplies more efficiently.
Chief executive Dorothy Thompson said: "The decision to go ahead with the turbine reblading project demonstrates our commitment to invest in the future of the business and, importantly, to tackling climate change."
Drax, which produces 7% of England's electricity needs, was responsible for 21m tonnes of CO2 emissions in 2005. The company said the turbine changes would cut that figure by 1m tonnes a year.
Drax also said it expected its annual earnings before interest, tax, depreciation and amortisation to be between £578m and £585m, compared to £239m last year.
About 600 people are employed at the plant, which was first opened in 1974.
In November the Environment Agency said an 18-month trial of a controversial fuel at Drax had had no adverse impact on local health.
The plant burned a mixture of coal and up to 15% petroleum coke (petcoke), an oil-based fuel which is a by-product of the petroleum industry.
Drax said it would now apply to burn the fuel in all their six boiler units.