Carbon run as a live project control through construction — from a target sheet to a budget to a number tracked every week on site.
Eighteen sustainability targets landed on the desk — the kind of brief you answer, win, and move on from. Read properly, it asked a harder question: who actually coordinates all of this, week by week, while the job is being built?
Setting targets is easy. Owning them is the gap — and nobody had an answer for who did.
The package target — 3,001 tonnes CO₂e (A1–A5) — was broken down so it could be allocated, spent against, and watched when a package ran hot.
Three options were modelled. The brief mandated all-electric plant — measurement showed it delivered minimal savings on this site. Switching plant fuel to HVO moved the whole package by around 40%, and nobody had specified it. You cannot know which lever works from a target sheet. You only know it by measuring the actual job.
Appointed to run an assessment, the job kept asking for the next thing — and there was nobody else to do it.
Looking back at the tender response six months on, it was a carbon management plan — written without knowing that's what it was.
Every site material delivered to site is reconciled against the Stage 4 model, with carbon assigned from EPDs and government factors. A digital twin of the client's model runs alongside, updated weekly.
The point is the timing: when the number drifts, it shows up while the specification can still change — not eighteen months later in an as-built report. And none of it asks for new paperwork. Material records already exist on every project; this just puts them to work.
Carbon budgets need active ownership. A target with no owner is a wish.
Monthly reporting changes behaviour. The act of measuring moves the number.
Procurement decisions carry measurable carbon. The mix and the fuel are where the tonnes are.
Early intervention beats end-of-project verification. Every time.
Carbon should be managed as a live project control. Not audited as a document.
The same approach applies to any project with a carbon target and no one managing it.
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