Reported elsewhere that it’s being fitted with a battery module for trial purposes and that it’ll not return to traffic until December 2024.
UK: Overcrowding and short-notice cancellations at state-owned TransPennine Express have declined since the December timetable change, prompting Managing Director Chris Jackson to suggest the operator is in a 'better place'.
www.railwaygazette.com
And the relevant section from the article -
Battery power trial
Meanwhile, the Class 802 trainset which was damaged in a shunting accident in March 2022 remains out of traffic. Although No 802 207 has now been repaired, it will not be returning to service yet, as it is receiving modifications for use as a battery testbed.
This will see a 6 m long, 2·2 m wide battery module installed in place of one of the existing engines, which will improve fuel efficiency by using two diesel powerpacks rather than three.
The battery module will provide top-up power for peak demand and give regenerative braking capability when operating in diesel mode, which the trains currently do not have. Arrival and departure at stations is also to be trialled in battery mode to assess noise and air-quality improvements. The train is planned to re-enter traffic in December.
‘We’re supplying that unit to support what we think is a sensible industry scheme to look at whether we can do something to move from bi-mode to tri-mode, which could be beneficial for the industry from a green perspective’, Jackson confirms.