Tummel Power Station, Grampian Hydro Electric Scheme

Tummel Power Station, part of the Grampian Hydro Electric Scheme, was designed by consulting engineer William Halcrow and built by Balfour Beatty between 1931 and 1933. This large, two-storey and attic power station features a roughly rectangular plan with seven bays, designed in a plain classical style. The exterior is finished with painted render and includes painted rock-faced long and short quoins. The second and fifth bays are recessed, and there are full-height pilasters, a banded string course at the second floor, and a deeply corniced eaves course. The advanced bays have large fielded panels on their returns. The ground floor has a deep design with arcaded, keystoned, shouldered arched multi-pane windows, which do not extend full-height to the terminal bays. The first floor features bi-partite multi-pane windows with advanced cills.

On the west elevation, there are five bays, with a lower recessed single bay to the right. A large mahogany door is located roughly at the center within a keystoned shouldered arched surround, flanked by tall keystoned round-arched windows (paired to the north). Above, there are rectangular multi-pane windows. The recessed bay also has similar windows set in recessed surrounds.

The north elevation is predominantly plain, with some corniced projecting blocks, pilasters, and fielded panels. A row of multi-pane rectangular windows is located at the first floor in recessed surrounds.

The east elevation mirrors the west but features a large multi-pane window instead of the mahogany door.

The building predominantly has small multi-pane glazing in cast-iron frames, and the cast-iron rainwater goods are integrated with the cornice.

Inside, the power station has a plain interior with a large roller crane on a steel gantry in the main double-height space. There are additional steel gantries at the rear that create upper floors, and the original control panel is located on the upper floor at the rear, integrated with a tiled floor.