Honest carbon accounting,
whatever data you start with.

Every number comes with its range and its working, traceable to the row, with a carbon accountant looking over it. Start from the spend, bills or activity data you already have.

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app.hemerascope.com / workspace / overview

FY2024 · Apr 2024 to Mar 2025

Total emissions · FY2024

12,847

tCO₂e

tonnes CO₂ equivalent

▼ 8.3% vs FY2310,500 to 15,800 · 95% CI · ±18%GSD 1.42 · methodology · pinned

Where the tonnes flow

Activities to scopes to hotspots · all 12,847 tCO₂e accounted for

Scope 1Scope 2Scope 3

Carbon budget · SBTi 1.5°COn pace

13.1%

of 2020s decade budget consumed

0%SBTi pace · 10%100%

Projected exhaustion 2034 against a target of 2030. 4-year gap closing through delivered reductions.

Top hotspotsFY2024

Raw materialsS3

4,200tCO₂e

Grid electricityS2

2,106tCO₂e

Outbound logisticsS3

1,890tCO₂e

Other inputsS3

1,980tCO₂e

Reduction trajectory · SBTi 1.5°C

Current pace projects 9,500 tCO₂e by 2030. SBTi-aligned target 8,400.

HistoricalCurrent paceSBTi target

Methodology v4 · hash 3a4f2b89

2,341 records · DEFRA UK GHG 2024 v1 · pedigree-weighted

Why HemeraScope

What makes HemeraScope different

Works from the data you have.

Spend exports, utility bills, meter readings and supplier answers all go in as they are, and the footprint meets you at whatever data quality you can offer today.

A 95% range on every number.

Each headline figure carries a 95% range, computed by Monte Carlo from a published methodology and conservative by construction, so you can see how firm the number is.

Priced marginal improvement, ranked.

We tell you what to do next. The data you could add is ranked by how much each addition would tighten your range, with what it would take to get it, so an afternoon of effort goes where it changes the answer.

Reduction claims tested against the range.

Before you put a reduction in front of a customer, we test it against the range, and we say plainly when the range cannot show the reduction you are claiming.

Anyone can check our arithmetic.

Every number traces to its activity, its factor and the person who signed it off, and we publish an offline verifier so your customer, your council or your accountant can re-run the file themselves.

A carbon accountant on Managed plans.

On Managed plans a named carbon accountant goes through your workspace, so the judgement calls get a person's attention before you put a number in front of anyone.

Sector estimate

See a first number before you sign up.

Pick your sector and enter annual turnover. We show a provisional screening estimate of your annual carbon footprint, with an honest 95% range based on sector averages. It is a starting point, not your real data.

Your sector

Annual turnover (GBP)

Platform

Everything in one workspace.

The operational side is handled too: multiple sites and entities, and the people who work the data.

Multi-entity rollup

Multiple sites, business units, or legal entities consolidate into a single workspace. Group-level reporting at the top, per-entity data for local filing.

Roles and permissions

Finance, operations, sustainability and procurement all work side by side. Role-based access controls who edits what; an audit log records every change.

Reporting periods that close

A period runs open, then locked for sign-off, then published, with the methodology and factor library pinned at lock. Last year's number stays exactly as it was published.

HemeraScope

Complete carbon accounting, without the barrier to entry.

Full Scope 3, not a shortcut.

Scope 1, 2 and 3 from your activity and spend, including the categories most tools leave out.

We classify every transaction, match your suppliers, and calculate emissions against recognised factors. Scope 3 is included in full, not just the two or three categories that are easy to count. It is built on the GHG Protocol Corporate Standard, so your board and your auditor read the same number.

Numbers you can read.

What is driving the total and what to do next, not just a figure.

Every figure breaks down into the activity behind it, the factor applied, and what is driving the total. Insight cards surface the hotspots that move the number and the data-quality fixes that would tighten it. You get something to act on, not just a total to report.

Supplier data, handled.

Primary data from the source, without the chasing.

Most supplier requests fail because they arrive as a spreadsheet nobody knows how to fill in. We ask in plain terms your suppliers can answer, and on Managed plans our analysts run the follow-up and track each conversation to closure. You get primary data from the source instead of spend-based estimates.

See how you compare.

Benchmark your footprint against peers, by sector and by category.

Curated peer cohorts show how your footprint compares with organisations like yours, matched on sector, revenue band and geography. A cohort is never fewer than five organisations, and comparisons are shown as quartiles, not a league table, so no single peer can be picked out. Peer comparisons appear once at least six peers have published.

Always up to date.

Continuous, not a once-a-year scramble.

Your footprint stays current as activity records come in through the year, so it is ready when a customer, investor or regulator asks, not rebuilt from scratch each spring. Model reduction scenarios against SBTi pathways or any target you have set.

Auditable to the row.

A full audit trail and quantified uncertainty behind every number.

Quantified uncertainty on every figure, a full audit trail, and a versioned, hash-chained ledger where each number traces to its activity, its factor and the person who approved it. The same records project to whichever disclosure you are asked for, GHG Protocol, SECR, CSRD or CBAM, without re-keying anything. It re-runs to the same number, year after year.

Methodology

How a number gets made.

01Activity

28,500kWh

An activity record, mapped against your taxonomy. The platform works with whatever data you have today, from spend ledgers to operational quantities to primary measurements, and flags where moving one tier up would tighten the result most.

Activity ladder · this row

Spend records (£)

Industry-typical activity

Operational activity

Primary measured

02Factor

0.207kgCO₂e / kWh

The platform searches across DEFRA, ecoinvent, IPCC and supplier-submitted PCFs for the closest-matching factor. The match is pedigree-matrix scored across five dimensions and version-locked with a hash, so the same row reproduces the same number when re-run in 2027.

Factor ladder · this row

Spend-based intensity proxy

Industry average (IPCC, EPA)

DEFRA category default

Supplier-specific PCF

03Emission

5.90tCO₂e± 3.8%

The result, with its ±, comes from Monte Carlo simulation across the pedigree-scored inputs. The approach is drawn from peer-reviewed Life Cycle Assessment and aligns to ecoinvent and ISO 14040/44 where possible. Every input, factor, methodology version and timestamp is chained in the Footprint Ledger so any figure can be traced back to its source.

Built onGHG Protocol Corporate & Scope 3ISO 14064 reportingISO 19011 samplingSBTi targetsISSA 5000 / ISAE 3410 structured for your assurerPedigree Matrix data quality

Collaboration

We work alongside your team.

For your business

The carbon accounting work, done.

On Managed plans we model the footprint, build the methodology, and draft the reports. Your team owns the reductions and the supplier relationships.

For your suppliers

A clean portal for primary data.

Suppliers submit primary data directly. Their data replaces the platform's default factors and makes every figure that depends on them more accurate.

For the network

It compounds over time.

Every supplier that answers once makes the next footprint faster to build and better sourced. Your data stays yours, the shared registry lifts the coverage and quality everyone starts from, so the platform gets stronger the more it is used.

Included in your subscription

More than an annual footprint.

Product carbon footprints

Per-unit footprints, ISO 14067.

Declare the embodied carbon of each product you make across the EN 15804 life-cycle stages, from a bill of materials priced against recognised factors.

Event carbon

A carbon account per event.

Categories, attendee travel and a methodology that names its inputs, with a public attestation page anyone can verify against your data.

See it in action

Watch a footprint get built.

The fastest way to judge it

Open a real workspace.

A fully worked example account, seeded with real data, spend classified into scopes, uncertainty on every figure, an audit pack. No signup.

See the live demo →

Where we are

A founding cohort.

We are onboarding our first clients now, so we have no customer logos or testimonials to show yet. We would rather earn them than borrow someone else's. If you want to be one of the first, the Procurement-Ready report is the way in.

The founding offer →

Step into a live workspace.
No signup required.