Tummel Bridge Power Station

Project: Tummel Bridge Power Station
Location: Tummel Bridge, Perthshire 
Client: SSE Renewables

Tummel Bridge Hydro Electric Power Station consists of two ‘Camel Back’ twin runner, hydro turbines with a combined rated output of 34 MW. The power station is located in the centre of the Tummel Valley Hydro Scheme and the power station is fed from an open aqueduct from Dunalastair Dam. Tummel Bridge Power Station delivers a nominal 142 GWh per annum. 

Global Infrastructure were appointed as Principal Contractor for the project and contracted to replace the existing original power generation infrastructure including turbines, generators, MIVs and ancillary mechanical and electrical systems. 

Advanced works began in Summer 2021 ahead of the main refurbishment in Spring 2022. This involved dismantling of the existing hydroelectric plant which had been operational since 1933, before construction commenced with rock dowelling, reinforced concrete works, and structural steelwork to prepare the Power Station for an SSER's subcontractor to arrive and start installing the first phase of the new mechanical electrical plant equipment. 

Upgrades were also made to the two existing penstock flanges within the building to accommodate the new MIVs, along with new and upgraded Mechanical & Electrical works to meet modern standards. Simultaneously, builder work and joinery work were upgraded.

The installation of two bespoke turbines and generators, designed, supplied, installed, and commissioned by an SSER subcontractor, has progressed safely and successfully, and has entered commissioning ahead of their imminent return to service.

The new energy-efficient turbines at Tummel Bridge Power Station will increase the power station’s megawatt capacity, secure long term reliable renewable energy and contribute towards SSE Renewable’s NetZero ambitions for generations to come.