Are these modern engine houses?

Back in April, as we came up the Grand Union back to Wigram's Turn and the end of the holiday, we passed several smallish brick buildings with shiny semi-cylindrical steel roofs beside locks.


I assume they are pumping stations, to back-pump water uphill.


I wonder how the pumping capacity and running costs compare with older pump houses, such as at Smethwick.


Today's ones certainly use fewer bricks!