Overstory
Measuring the light
Case studies
The number comes first.
Every project opens on the result a finance director can check: tonnes cut, power switched, a score earned. The story comes after.
- 2.1 Mt
- CO2e cut since 2016
- 62
- Clients on a validated target
All case studies
Six projects, each with its number.
Pick a sector to see the work closest to yours. Each card opens the full story: what we measured, what changed and what the client says now.
Showing 6 of 6 case studies
Logistics2025−42%tCO2e per parcelNorthline FreightSupply chainA parcel network cut emissions per parcel by 42 percent in three years.
Manufacturing2024−36%Scope 1 and 2Marlow PolymersNet zero strategyA plastics moulder took a third off its direct emissions without a new building.
Manufacturing20259,400 tCO2e mapped to sourceTessell FurnitureCarbon footprintA furniture maker found 74 percent of its footprint in three bought materials.
Property2024A−First climate disclosure scoreThe Aldine HotelsESG reportingA hotel group published its first full report and scored A− at the first attempt.
Food and drink202583%Power from its own roof and a wind contractBrae Estate WinesGreen energyAn estate winery now runs on 83 percent clean power bought at a fixed price.
Property2023£8.6mExposure found before purchaseCalder HomesClimate riskA housebuilder priced flood and heat risk into 14 land deals.
Not sure which of these is closest to you?
Book a baseline callAll case studies
Six projects, each with its number.
Pick a sector to see the work closest to yours. Each card opens the full story: what we measured, what changed and what the client says now.
Showing 6 of 6 case studies
- Logistics2025−42%tCO2e per parcelNorthline FreightSupply chainA parcel network cut emissions per parcel by 42 percent in three years.
- Manufacturing2024−36%Scope 1 and 2Marlow PolymersNet zero strategyA plastics moulder took a third off its direct emissions without a new building.
- Manufacturing20259,400 tCO2e mapped to sourceTessell FurnitureCarbon footprintA furniture maker found 74 percent of its footprint in three bought materials.
- Property2024A−First climate disclosure scoreThe Aldine HotelsESG reportingA hotel group published its first full report and scored A− at the first attempt.
- Food and drink202583%Power from its own roof and a wind contractBrae Estate WinesGreen energyAn estate winery now runs on 83 percent clean power bought at a fixed price.
- Property2023£8.6mExposure found before purchaseCalder HomesClimate riskA housebuilder priced flood and heat risk into 14 land deals.
Not sure which of these is closest to you?
Book a baseline callAll case studies
Six projects, each with its number.
Pick a sector to see the work closest to yours. Each card opens the full story: what we measured, what changed and what the client says now.
Showing 6 of 6 case studies
- Logistics2025−42%tCO2e per parcelNorthline FreightSupply chainA parcel network cut emissions per parcel by 42 percent in three years.
- Manufacturing2024−36%Scope 1 and 2Marlow PolymersNet zero strategyA plastics moulder took a third off its direct emissions without a new building.
- Manufacturing20259,400 tCO2e mapped to sourceTessell FurnitureCarbon footprintA furniture maker found 74 percent of its footprint in three bought materials.
- Property2024A−First climate disclosure scoreThe Aldine HotelsESG reportingA hotel group published its first full report and scored A− at the first attempt.
- Food and drink202583%Power from its own roof and a wind contractBrae Estate WinesGreen energyAn estate winery now runs on 83 percent clean power bought at a fixed price.
- Property2023£8.6mExposure found before purchaseCalder HomesClimate riskA housebuilder priced flood and heat risk into 14 land deals.
Not sure which of these is closest to you?
Book a baseline callIn their words
Clients who can show their working.
01 of 05They rebuilt our footprint from the vans up. For the first time the board and the depot managers were looking at the same number.
Other firms gave us a target. Overstory gave us the order to do things in and what each step would cost.
Our first report passed assurance without a single restatement. I did not think that was possible in year one.
They told us not to buy two sites. That advice has already paid for the next ten years of their fees.
The power contract was explained to us in one page. We signed it knowing exactly what we were exposed to.
In their words
Clients who can show their working.
01 of 05They rebuilt our footprint from the vans up. For the first time the board and the depot managers were looking at the same number.
Other firms gave us a target. Overstory gave us the order to do things in and what each step would cost.
Our first report passed assurance without a single restatement. I did not think that was possible in year one.
They told us not to buy two sites. That advice has already paid for the next ten years of their fees.
The power contract was explained to us in one page. We signed it knowing exactly what we were exposed to.
In their words
Clients who can show their working.
01 of 05They rebuilt our footprint from the vans up. For the first time the board and the depot managers were looking at the same number.
Other firms gave us a target. Overstory gave us the order to do things in and what each step would cost.
Our first report passed assurance without a single restatement. I did not think that was possible in year one.
They told us not to buy two sites. That advice has already paid for the next ten years of their fees.
The power contract was explained to us in one page. We signed it knowing exactly what we were exposed to.
Start here
Book a baseline call.
Thirty minutes with a consultant. You leave with a rough footprint, the two biggest cuts and what a full pathway would cost.
Your call: Pick a size and a service
No cost, no deck. Replies inside one working day.
Start here
Book a baseline call.
Thirty minutes with a consultant. You leave with a rough footprint, the two biggest cuts and what a full pathway would cost.
Your call: Pick a size and a service
No cost, no deck. Replies inside one working day.
Start here
Book a baseline call.
Thirty minutes with a consultant. You leave with a rough footprint, the two biggest cuts and what a full pathway would cost.
Your call: Pick a size and a service
No cost, no deck. Replies inside one working day.