Long exposure image of audience filing through performance space amid COSCO shipping containers.

Luminato Festival at the Hearn Power Plant

Teaming up with Canada’s acclaimed Luminato Festival and PARTISANS Architects, we transformed the decommissioned Hearn Power Plant into the world’s largest temporary multi-arts centre.

Project Summary

For its 10th anniversary, Toronto’s Luminato Festival set out to create one of the most ambitious cultural venues ever attempted in the city: transforming the decommissioned Hearn Power Plant into a temporary multi-arts centre.

Key Features

  • a 1,100-seat theatre built inside a decommissioned power station
  • a large-scale music venue with up to 5,000 standing capacity
  • a network of performance and exhibition spaces across the building
  • a unique immersive festival environment

Charcoalblue’s Approach

Working with PARTISANS Architects and the festival team, Charcoalblue helped reimagine the vast industrial structure as a network of performance environments capable of hosting theatre, orchestral music, experimental performance, exhibitions, talks, and dining.

Charcoalblue developed a flexible framework that allowed the building’s industrial scale and character to become a defining feature of the visitor experience.

Rather than fighting the architecture, the design embraced the raw qualities of the space — a key principle in creating successful theatres within “found spaces”.

The result was the largest temporary multi-arts venue ever created for the festival, bringing thousands of visitors into one of Toronto’s most iconic and rarely accessible industrial landmarks.

A power plant with smokestack alongside a waterfront.

The Vision

The festival’s leadership wanted to create an experience that blurred the boundaries between performance venue, cultural hub, and urban exploration.

The transformed power station would host:

  • theatre productions
  • amplified and acoustic music
  • exhibitions and gallery spaces
  • participatory workshops and talks
  • a restaurant located within the former control room
  • large-scale spectacle events

Rather than a single performance space, the goal was a fully immersive cultural environment where audiences could move throughout the building and encounter multiple art forms.

The project also sought to inspire broader conversations about reclaiming underused urban infrastructure for cultural use.

Key Challenges

Designing for a Vast Industrial Interior

The Hearn Power Plant is enormous, with an internal volume of approximately 700,000 cubic metres. Turning this space into functional performance environments required careful acoustic and spatial planning.

Supporting Diverse Programming

The venue needed to support an unusually broad programme, including:

  • spoken-word theatre
  • orchestral performances
  • experimental and amplified music
  • participatory audience events

Each required different spatial and acoustic conditions.

Creating a Multi-Space Audience Journey

The design needed to allow audiences to explore the building, moving between multiple venues and experiences without losing orientation within the enormous structure.

Elevated view of wall structures dividing the long space.

© Jonathan Castellino

The Hearn Theatre

At the centre of the project was the 1,100-seat Hearn Theatre, constructed using stacked shipping containers to create a temporary theatre structure within the building.

The theatre was designed to host the National Theatre of Scotland’s touring production of The James Plays while supporting other performances throughout the festival.

The Hearn Theatre

At the centre of the project was the 1,100-seat Hearn Theatre, constructed using stacked shipping containers to create a temporary theatre structure within the building.

The theatre was designed to host the National Theatre of Scotland’s touring production of The James Plays while supporting other performances throughout the festival.

A Flexible Music Venue

An adaptable Music Stage was designed to host large-scale concerts and events, with capacity for:

  • 2,000 seated audience members
  • up to 5,000 standing

Programming ranged from the Toronto Symphony Orchestra to experimental performances and participatory choral events.

A Flexible Music Venue

An adaptable Music Stage was designed to host large-scale concerts and events, with capacity for:

  • 2,000 seated audience members
  • up to 5,000 standing

Programming ranged from the Toronto Symphony Orchestra to experimental performances and participatory choral events.

Acoustic Strategy for a Massive Volume

The scale of the power station created significant acoustic challenges.

Charcoalblue worked with Luminato’s artistic team and the National Theatre of Scotland to develop an acoustic strategy combining sound-reflective and sound-absorbing surfaces to manage reverberation within the cavernous structure.

This allowed the venue to support everything from intimate spoken-word performances to high-energy amplified music.

Acoustic Strategy for a Massive Volume

The scale of the power station created significant acoustic challenges.

Charcoalblue worked with Luminato’s artistic team and the National Theatre of Scotland to develop an acoustic strategy combining sound-reflective and sound-absorbing surfaces to manage reverberation within the cavernous structure.

This allowed the venue to support everything from intimate spoken-word performances to high-energy amplified music.

Designing an Exploratory Festival Environment

The project established four key performance spaces distributed throughout the building.

A spatial framework was created to guide audiences between venues, encouraging exploration while maintaining clear routes and gathering spaces.

The result was a cultural environment where visitors could experience multiple performances, installations, and social spaces in a single visit.

Designing an Exploratory Festival Environment

The project established four key performance spaces distributed throughout the building.

A spatial framework was created to guide audiences between venues, encouraging exploration while maintaining clear routes and gathering spaces.

The result was a cultural environment where visitors could experience multiple performances, installations, and social spaces in a single visit.

Results & Impact

For the duration of the festival, the Hearn Power Plant became one of the most extraordinary venues ever created in Toronto — a cultural landmark where theatre, music, art, and audiences collided within the monumental scale of a historic industrial structure.

Charcoalblue’s work helped unlock the building’s potential as a performance environment, and the transformation demonstrated how industrial heritage buildings can be reimagined as cultural destinations, inspiring new approaches to temporary performance venues and adaptive reuse.

People dine at two long tables in the industrial interior.
© George Pimentel
Project Details
Client Luminato Festival
Location Toronto, Canada
Year 2016
Project Consultants PARTISANS Architects, Architecture; National Theatre of Scotland, Production Partner