Zero-Carbon
Kickoff.

The club faced a filing deadline under CSRD and a board that had never quantified Scope 3 exposure. Fan travel — 38,000 supporters arriving predominantly by private car every other Saturday — represented 71% of the total carbon footprint. The number was uncomfortable. It was also an opportunity.

Sustain deployed a three-phase intervention: a full Scope 1–3 baseline audit using GHGP Sport methodology, a behavioural economics-led fan travel programme anchored to matchday transport partnerships, and a data infrastructure layer that feeds the annual sustainability report automatically.

Within 14 months, measurable modal shift reduced matchday emissions by 62%. The club filed its first CSRD-compliant report with zero restatements. The board approved a five-year net-zero roadmap in the same quarter.

Eight venues. Four different energy contracts. Two legacy buildings with no BMS integration. The group's sustainability director had a board mandate and no roadmap. Standard consultancy engagements had produced reports. None had produced results.

Sustain ran a 90-day operational audit across all eight venues simultaneously — energy consumption profiling, refrigeration plant assessment, lighting controls gap analysis, and a renewable procurement review. The output was not a report. It was a prioritised intervention register, each line item costed, sequenced, and assigned an owner.

Phase one interventions — LED retrofits, refrigeration optimisation, and a group-wide renewable PPA — delivered £4.1M in annualised energy cost reduction within 18 months. Scope 1 and 2 emissions fell 41%. The CFO presented the case study at the group's investor day.