The short answer
A five-year emissions allowance is not an annual target multiplied by a convenient label. This historical comparison follows the first proposal and approval sequence, then uses an invented ledger to make the period and unit distinction explicit.
Record comparison
Compare the evidence
Keep the record, its authority and the claim being tested together.
| Record | What it establishes | What remains separate |
|---|---|---|
| Cumulative budget | An amount over a stated period | Not automatically an equal annual allowance |
| Later proposal | A separately dated policy record | Not evidence that the earlier provisional table used the later values |
Chronology
A timeline of the turning points
Advice submitted
First budget programme proposed.
Parliamentary sequence
Dáil approval follows the Seanad vote.
What the first proposal measured
On 25 October 2021 the Climate Change Advisory Council submitted three proposed five-year budgets to Minister Eamon Ryan. Their values were 295, 200 and 151 Mt CO₂ equivalent for 2021–2025, 2026–2030 and 2031–2035 respectively; the third was provisional. The unit expressed millions of tonnes across a period, not a percentage reduction in one year.
Keep the measurement boundary attached to the number. A cumulative quantity, a single year’s emissions and a percentage change from a baseline are related but different statements.
Sources for this section: [1]
Advice, parliamentary approval and sectoral ceilings
The government’s 2022 account dates its adoption of the programme to 24 February, Seanad approval to 5 April and Dáil approval to 6 April. Sectoral ceilings were then prepared for Cabinet approval. The programme’s national totals and the sectoral allocations were different stages of the process.
This sequence also separates the Council’s advisory role from the minister’s and the legislature’s responsibilities. One person’s association with a policy is not a reason to omit the institutions that proposed, approved and allocated it.
Sources for this section: [2]
Why a historical provisional figure needs a date
The Council’s later page describes a December 2024 proposal with 160 Mt for 2031–2035 and a provisional 120 Mt for 2036–2040. It also explains that exceeding one budget has consequences for the following period.
Those later records are a reason to date the earlier table, not to silently replace its numbers. This guide examines the first proposal and approval sequence. It does not certify today’s complete emissions ceilings, calculate a current compliance balance or provide advice on legal obligations.
Sources for this section: [3]
Worked task: balance an invented five-year ledger
Assume a fictional five-year cap of 100 Mt CO₂ equivalent. The first four years emit 24, 23, 21 and 19 Mt. There are no offsets, revisions, transfers or other adjustments in this classroom model. What maximum fifth-year amount would make the sum equal the cap? What is the five-year arithmetic mean?
Reference answer: the first four years sum to 87 Mt, leaving 13 Mt. With that final amount, the total is 100 and the mean is 20 Mt per year. The mean does not permit a further 20 Mt in year five: that would total 107. The exercise explains cumulative accounting under supplied assumptions; it does not reproduce Ireland’s emissions or the full legal treatment of carry-forward and revisions.
Continue the chronology
Related history guides
Biography context
Explore Ireland through connected lives
Connected biographies
People connected with these records
born 1963
Eamon Ryan
Former Green Party leaderRyan moved from cycling enterprise into politics. He later rebuilt the Greens and returned to government.Read biographyQuick answers
Common questions
- Does an average assign the same amount to each year?
- No. Different annual sequences can have the same total and mean.
Primary and institutional sources
How this history was checked
Compare each record’s date, author and stated purpose. The supplied tasks and reference answers are original learning material. This article was reviewed on 30 October 2026.
- Climate Change Advisory CouncilFirst carbon-budget programme proposal, 25 October 2021
- Government of IrelandSectoral emissions ceilings announcement,2022
- Climate Change Advisory CouncilCarbon Budgets: process and later proposal
- Oireachtas Committee on the Future of HealthcareSláintecare Report, May 2017: selected recommendations
- Department of HealthSláintecare Integration Fund launch, 2019