ScottishPower House

The largest single-use office to be built in Glasgow for 25 years

Scottish Power’s St. Vincent Street headquarters in Glasgow is a significant addition to the city’s skyline, marking the largest single-use office construction in the past 25 years. This fourteen-storey building has been strategically designed to maximize its efficiency and adaptability for the future. Its architectural concept comprises two linear east/west office blocks with varying floor plate heights, connected by a top-lit glazed atrium and service cores.

This building has not only transformed a previously derelict site but has also enhanced the city’s appearance, particularly from the motorway. It now stands as a prominent feature in Glasgow’s skyline, offering a safe walkway for pedestrians, protecting them from the unpredictable Scottish weather, and optimizing floor space on the upper levels.

The building offers a range of features and amenities, including:

  • Pleasant Working Environment: The building prioritizes the comfort and security of its staff, creating a modern and secure workspace.
  • Social Facilities: The premises boast a 280-capacity Lecture Theatre, meeting areas, staff restaurant, gym, occupational health suite, welfare facilities, and underground parking spaces.
  • Quality Materials: The choice of high-quality external and internal materials aligns with Iberdrola’s corporate guidelines.
  • Technology Integration: The design enables seamless adaptation to evolving technology, communication, and IT capabilities.
  • Data Center: The building includes a Tier III data center for centralizing IT functions.
  • Alarm Receiving Centre: It also houses an Alarm Receiving Centre to serve the broader ScottishPower estate.


Efforts to reduce energy consumption were embedded in the design from the beginning. The decision to use concrete as the primary building material was a key energy-efficient choice. The concrete’s thermal mass allows it to absorb and release heat, contributing to temperature regulation. The design of the southern elevation incorporates external ventilation risers and a high-performance glazing system to minimize solar gain. The building’s ventilation system includes heat recovery, and a sophisticated Building Management System (BMS) ensures effective control of mechanical systems and lighting.

Sustainability is a core principle of this building’s design. Rainwater harvesting minimizes water consumption, and the building achieved a BREEAM rating of excellent and a minimum EPC of C.


Extensive engagement with staff guided the design process. The building aims to enhance the well-being of its occupants, offering amenities like a restaurant, gym, and occupational health suite. These facilities are strategically located within the building, ensuring ease of access and visibility.

The interior layout was thoughtfully designed to meet various parameters:

  • Modularity: Spaces are organized according to a ceiling grid module, allowing for easy interchangeability.
  • Noise Control: Special attention was given to reducing noise transmission between enclosed areas.
  • Work Settings Variety: The modular spaces create individual workspaces, collaborative areas, and support spaces, providing flexibility for employees. Informal meeting areas break the rhythm of workstations.
  • Daylight and Views: Enclosed spaces are positioned along the atrium facade, allowing natural light and city views to permeate the floorplate.
  • Proximity to Services: Wet areas are strategically located near building cores for efficient access to mechanical and electrical services.

The majority of the floor plate remains open, with enclosed spaces thoughtfully placed for practicality. High-quality finishes, as per Iberdrola’s corporate guidelines, adorn the workspaces, enhancing the overall aesthetic and functionality.

In summary, the St. Vincent Street headquarters is a testament to innovative design, sustainability, and user-centric thinking, serving as a model for modern office construction.

Project Info

ScottishPower Ltd
330-336 St Vincent St, Glasgow
£75 million
Internal Floor Area
September 2017
Winner - RICS Award 2018
Commercial Category
Shortlisted - BCO 2018 Awards
Commercial Category
Project Manager
GVA Second London Wall
Structural Engineer
M&E Engineer
Cost Consultant
Turner & Townsend
Laing O’Rourke
Andrew Lee
Helical Bar Plc
Interior Designer
Page\Park Architects