[6] Ten days later she started favourite for a maiden on the same surface at Wolverhampton Racecourse but after leading for most of the way she faded in the closing stages and came home third behind Jojo Rabbit and Plum Run.

The filly ran for the first time on turf in a nursery (a handicap race for juveniles) at Redcar Racecourse on 27 July and recorded her first success as she won in a "canter" by five lengths carrying top weight of 135 pounds.

When stepped up to Listed class for her next appearance the filly came home sixth behind Acklam Express in the Roses Stakes at York Racecourse on 22 August.

Two weeks later Winter Power started favourite for a novice race (for horses with no more than two previous wins) at Redcar Racecourse and won by a length from Risk of Thunder after taking the lead inside the final furlong.

[8] The filly was then stepped up in class for the Group 2 Flying Childers Stakes at Doncaster Racecourse on 11 September but ran poorly and came home last of the ten runners behind Ubettabelieveit.

A week after her disappointing effort at Doncaster Winter Power was ridden by David Allan when she started at odds of 7/1 for the Listed Harry Rosebery Stakes at Ayr Racecourse.

She was in contention from the start, gained the advantage approaching the final furlong, and stayed on well to win by half a length from the colt Nomadic Empire.

"[12] Winter Power began her second campaign in the Listed Westow Stakes on 13 May at York when she started the 5/1 second favourite behind Acklam Express in an eight-runner field.

"[14] On 15 June at Royal Ascot Winter Power was moved up to Group 1 class for the first time for the King's Stand Stakes but after being in contention for most of the way she faded in the closing stages and came home ninth of the sixteen runners behind the five-year-old gelding Oxted.

With Allan in the saddle, Winter Power disputed the lead from the start, broke away from her opponents approaching the final furlong and kept on well to win by a length and a neck from Moss Gill and Urban Beat.

"[16] Winter Power returned to Group 1 class on 20 August at York in the Nunthorpe Stakes when she was ridden by De Sousa and started at odds of 9/1 in a fourteen-runner field.