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Baseline
10 upcoming

Key dates

Deadlines and milestones from every explainer, in date order.

Nov 2026

  1. COP31 opens in Türkiye

    UN climate conference, running to 20 November 2026

    What does the UN mean when it says the world will overshoot 1.5°C?
  2. Deadline for feedback on HMRC's technical guidance
    How will the UK's carbon border charge work from January 2027?

Dec 2026

  1. Standards board meeting to review the working group's proposals
    How will the GHG Protocol change the way companies count green electricity?
  2. Official rates for January to March 2027 due by this date

    Then published at the start of each quarter

    How will the UK's carbon border charge work from January 2027?

Jan 2027

  1. UK CBAM starts for goods imported from this date
    How will the UK's carbon border charge work from January 2027?

May 2028

  1. First return and payment due, covering 2027 imports

    Registration for 2027 is due by 31 January 2028; returns become quarterly from 2028

    How will the UK's carbon border charge work from January 2027?

2030

  1. First milestone on the lowest-overshoot path

    Emissions 18% below 2025 levels

    What does the UN mean when it says the world will overshoot 1.5°C?

2035

  1. Second milestone

    Emissions 45% below 2025 levels

    What does the UN mean when it says the world will overshoot 1.5°C?

2040

  1. Third milestone

    Emissions 69% below 2025 levels; coal power effectively phased out

    What does the UN mean when it says the world will overshoot 1.5°C?

2100

  1. Return to 1.5°C

    About a 50% chance on the lowest-overshoot path

    What does the UN mean when it says the world will overshoot 1.5°C?