DSS5101 Chap.10 Carbon Accounting, Reporting and the Energy Transition
Carbon Accounting, Reporting and the Energy Transition
From treaty accounting to organisational accounting
The Week 10 lecture defines carbon accounting as measuring, tracking and reporting the greenhouse gas emissions of an organisation under standardised frameworks, including the calculation of Scope 1, 2 and 3 emissions.
The discipline has a national ancestor in the Kyoto accounting rules covered in Chapter 7. Developed-country Parties submitted an annual inventory by 15 April covering six gases across the standard sectors, held units in national registries linked to an international transaction log, and settled their position in a true-up period of 100 days after the final review.
Adjustments were deliberately conservative, lowering base-year estimates and raising commitment-period ones.
Scopes and standards
In the standard corporate framework, Scope 1 covers direct emissions from sources an organisation owns or controls, Scope 2 covers indirect emissions from purchased electricity, heat and steam, and Scope 3 covers all other indirect emissions across its value chain.
The lecture places this inside a landscape of evolving reporting standards: corporate social responsibility reporting, ESG disclosure, and the TCFD and TNFD frameworks for climate-related and nature-related financial disclosure, with a brief look at the university’s own sustainability reporting.
Offsets and the energy transition
A UNFCCC technical paper assigned for the climate week explains why offsets need care.
When a buyer uses a credit to cover its own emissions, the reduction achieved elsewhere is cancelled out, so a genuine net decrease requires fewer credits to be used than tonnes reduced.
The lecture closes on the clean energy transition: global supply still relies heavily on fossil fuels, nuclear provides a smaller share, and solar, wind and hydro are growing fast, supported by storage, smart grids, electrification, hydrogen as an energy carrier and carbon capture. The climate lecture’s figure that energy produces 86 per cent of global carbon dioxide explains why the transition dominates mitigation.
What this chapter covers
- 01
National inventories, registries and true-up
- 02
Scope 1, Scope 2 and Scope 3 emissions
- 03
CSR, ESG, TCFD and TNFD reporting
- 04
Why an offset is not a reduction
- 05
Net decrease and discounted credits
- 06
Fossil supply and the clean energy transition
Testing an offset claim for a net decrease
- 2Apply the issuance discount.
- 3Find the net effect when every credit offsets other emissions.
Key terms
- Carbon Accounting
- Measuring, tracking and reporting an organisation's greenhouse gas emissions according to a standardised framework.
- Scope 1 Emissions
- Direct emissions from sources an organisation owns or controls, such as its own boilers and vehicles.
- Scope 2 Emissions
- Indirect emissions from the generation of electricity, heat or steam that an organisation buys.
- Scope 3 Emissions
- All other indirect emissions in an organisation's value chain, from purchased goods to business travel and product use.
- Carbon Offset
- A credit representing an emission reduction made elsewhere, used to cover an emitter's own emissions.
- Net Decrease
- A reduction in global emissions that remains after offsets are counted, achieved when fewer credits are used than tonnes reduced.
Carbon Accounting, Reporting and the Energy Transition FAQ
What is the difference between Scope 1, 2 and 3 emissions?
Scope 1 is direct emissions from sources an organisation owns or controls. Scope 2 is indirect emissions from the electricity, heat or steam it buys. Scope 3 is every other indirect emission in its value chain, which is usually the largest and hardest to measure.
Why can Scope 3 totals not simply be added across companies?
One firm's Scope 3 emissions are another firm's Scope 1 or Scope 2 emissions. Adding every company's scopes together counts the same tonne several times, so national or sector totals must be built from direct emissions.
Does buying carbon credits reduce emissions?
Not by itself. A credit used to cover the buyer's emissions cancels the reduction it represents, so the net effect can be zero. A genuine net decrease needs fewer credits used than tonnes reduced, for example through discounting.
What reporting standards does the course mention?
Corporate social responsibility reporting, ESG disclosure, and the TCFD and TNFD frameworks for climate-related and nature-related financial disclosure, with a brief look at the university's own sustainability reporting.
What does the clean energy transition involve?
Moving supply away from fossil fuels towards solar, wind and hydro, which are growing fast, supported by storage, smart grids, electrification, hydrogen as an energy carrier and carbon capture. Nuclear currently contributes a smaller share.
Assessment move
Practise one footprint by hand, assigning every source to a scope, and one offset calculation showing the net effect. Those two exercises expose the double-counting and cancellation errors that the reporting standards exist to prevent.
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