April 19 (Reuters) - Transalta Corp TA.TO :
* Transalta board approves plan for accelerating transition to clean power in alberta
* Says retirement of sundance unit 1 will be effective january 1, 2018
* Says mothballing of sundance unit 2 will be effective january 1, 2018, for a period of up to 2 years
* Expects that capacity of sundance units 3 to 6 and keephills 1 and 2 will not change following conversion
* Total capital commitment for coal-to-gas conversions is approximately $300 million
* Conversion will result in reduction of about 40 percent of carbon emissions maintaining about 2,400 mws to alberta power grid
* Auction of these units to occur in 2019 for 2021 Source text for Eikon: ID:nCNWJXPgJa Further company coverage: TA.TO