Telstra has signed a deal to use wind power in Queensland to meet a quarter of its energy needs.
Ark Energy announced on Tuesday it would supply the telecommunications giant with renewable electricity from the 923.4 megawatt MacIntyre Wind Farm being built 50 kilometres south-west of Warwick.
Telstra has bankrolled more than $1 billion of renewable energy projects across Queensland, Victoria and NSW as it targets 100 per cent renewable energy use by 2025.
Telstra's technology boss Kim Krogh Andersen said the major power purchase agreement (PPA) with Ark would also help insulate the telco from spikes in wholesale electricity prices.
"Our annual power bill is equivalent to 300,000 household power bills, so signing long-term renewable energy agreements helps us to manage our costs," Mr Krogh Andersen said.