TransAlta Corporation announced that the combined 300 MW White Rock East and White Rock West wind facilities (White Rock), located in Caddo County, Oklahoma, have achieved commercial operation. The White Rock wind facilities are fully contracted to Amazon Energy LLC (Amazon) and are currently supplying clean and affordable electricity to customer. TransAlta?s portfolio in the US now totals 820 MW in net operating renewable energy capacity.

White Rock comprises a total of 51 Vestas wind turbines and is the first of the Company?s two wind projects in Oklahoma to achieve commercial operations. On Feb. 22, 2024, the Company entered into a 10-year transfer agreement with an AA- rated customer for the sale of approximately 80% of the expected PTCs to be generated from the White Rock wind facilities.

The remaining PTCs are expected to be sold through spot transactions or contracted at a later date. White Rock Project Highlights: Long-term contracted revenues from Amazon; an investment-grade customer; 10-year transfer agreement of PTCs, which are subject to an annual inflation adjustment factor, with an AA- rated third-party customer; 49 Vestas V162 6.0 MW and 2 Vestas V136 3.45 MW turbines that are 119 metres and 105 metres in height with total rotor diameters of 162 metres and 136 metres, respectively; Estimated average annual adjusted EBITDA range between USD 53 and USD 57 million, including third-party sales of PTCs; and TransAlta weighted-average contract life of renewables portfolio increase to 12 years.