Hundreds of jobs are set to be created in Devon over the next 12 months as peak construction is carried out on a £400m power station.
A business park is planned on 80 acres around the station
The Centrica-run gas turbine power station at Langage near Plymouth is due for completion in 2009.
The plant will provide 885 megawatts of electricity, enough to power about a million homes, and employ about 800 workers during major construction.
A commissioning phase will take place before the plant becomes operational.
About 50 people will be employed on a full-time basis when the plant is operational.
The plant will have a 65m stack. Construction started in 2006 with about 300 workers and is increasing at the start of major work.
A business park is planned on 80 acres surrounding the station.
A new gas pipeline has also been approved to supply the power station. Centrica says the station will help stabilise UK power supplies amid predictions of shortfalls in the future.