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Emissions engine

The carbon maths, done for you.

Enter activity — litres, kWh, kilometres — and Tellus applies the official factor for the reporting year, using the methodology you choose. Prior years keep their own factors.

What’s inside

Activity in, emissions out.

Choose your methodology

Convert activity to CO₂e using DESNZ, US EPA or IPCC factors — each a full CO₂e set with the right global-warming potentials. Your report states which you used.

Emission-factor methodology
DESNZ · UK DEFRA
US EPA
IPCC
✓ All years restate on the same basis

Scope 1 fuels

Enter fuel used and get emissions back, using the year’s official factor.

Scope 1 · diesel
Diesel (average blend)0litres
Emissions · DESNZ 202632.04 tCO₂e
FY 2025 would use the 2025 factor

Business flights

By haul and cabin class, with radiative forcing included.

Scope 3 · air travel
From
To
Round trip · Business
Emissions · incl. RF5.82 tCO₂e
✓ Added to Scope 3

Employee commuting

Round-trip distance by mode, gathered with an HR template or inputted directly into Tellus.

Scope 3 · commuting
Car7,500km
Rail4,200km
Motorbike5,100km
12 staff · round trips28.6 tCO₂e

Energy auto-convert

Fuel converts to kWh and emissions automatically.

Fuel → kWh → CO₂e
Diesel0litres
≈ 49,300 kWh12.9 tCO₂e
✓ Converted automatically

Malaysian grid factors

Scope 2 uses the right grid factor for each location.

Scope 2 · grid factor
Peninsular0.758kg/kWh
Sabah0.531kg/kWh
Sarawak0.236kg/kWh
✓ Right factor per location

Versioned by year

Each reporting year uses its own factor set, so comparisons stay honest.

Diesel factor by year
2.51FY24
2.56FY25
2.58FY26

Ready when you are

See Tellus on your own data.

Map one figure to every framework, lock a reporting year, and hand your assurer a clean audit trail. A 30-minute walkthrough shows you how — walking through your own numbers.

Book a walkthrough →

GHG Protocol Scope 1–3 · IFRS S1 & S2 (ISSB) · Bursa Malaysia · GRI · SASB · FTSE Russell · ISSA 5000 · ISAE 3000 / 3410 & AA1000-ready · SOC 2 Type II infrastructure (Singapore) · PDPA 2010 compliant