Skip to main content

5. Adjusting my trajectories

This article explains the uses of the Trajectory page

Riane avatar
Written by Riane
Updated over 2 weeks ago

1. Visualize trajectories

A trajectory represents the potential reductions made possible by the actions selected. It's a graph that shows whether or not the objective has been reached. Let's take a look at the page options:

  • Objective (box 1): selects the target with which you wish to compare the effects of the scenario's actions
    ex: view “All scopes with growth” objective

  • Scenario (box 2): selects the scenario to be displayed in the graph
    ex: display “focus vehicles” scenario

  • Objective completion (box 3): this is the result of the scenario and the objective! The percentage (here -46%) represents the emission reduction. It needs to be compared with the target above (-30%).
    ex: shows whether the “focus vehicles” scenario meets the “All scopes with growth” objective

  • Objective completion with projected growth (box 4): this is the result of the scenario and the objective, taking into account the emissions generated by the projected growth of the company! The percentage (here -20%) represents the target completion rate.

  • Chart type (box 5): to select the view to be displayed. The options are :

    • Reduction by action

    • Reduction by year

    • Emissions per year

Nb: only the Reduction per year and Emissions per year charts display the emissions generated by the projected growth. The Reduction per action doesn't take growth emissions into account. It allows an absolute view of each emission impact.

2. Adjust the trajectories

Under the graphs is a table summarizing the selected actions. It allows you to :

  • understand the impact of actions in the “Details” section

  • modify actions (start and end dates and tracking metrics) to adjust trajectories.

Time to finalize actions!

Once you've made your final choices, you can download the Climate Strategy report by clicking on “Download the report” at the very top of the page.

Congratulations, you've established your climate strategy! 🎉

Appendix: calculation details with projected growth

To summarise:

The percentage of growth is applied to the impact of the actions. So if an action initially had an impact of -100 tCO2eq and growth is 5%, it will have an impact of -105 tCO2eq.

In detail:

Let's take a concrete example,

Initial assumptions

  • initial emissions: 100,000 tCO2eq

  • start year of trajectory: 2025

  • end year: 2028

  • action A: replace steel with recycled steel

    • reduction: -30,000 tCO2eq

    • period: 2026 - 2028

  • action B: introduce teleworking

    • reduction: -3,000 tCO2eq

    • period: 2026 - 2028

Total emissions without reduction, applying an annual growth rate of 10% (tCO2eq)

  • 2025: 100,000

  • 2026 : 110 000

  • 2027 : 121 000

  • 2028 : 133 100

Calculation steps with 10% annual growth

1. Calculation of the percentage reduction for each action

reduction per action [%]
= reduction per action [t] / initial emissions [t]
  • action A: -30,000 / 100,000 = -30

  • action B: -3,000 / 100,000 = -3%

2. Calculation of the reduction for each action taking growth into account

reduction per action with growth [t]
= final emissions with growth [t] * reduction per action [%]
  • action A: 133,100 * -30% = -39,330

  • action B: 133,100 * -3% = -3,993

3. Calculation of annual reduction

  • the impact of each action is smoothed over the period of the trajectory

  • the impact of each action is added to the other actions

annual reduction with growth [t]
= sum for each action (reduction per action with growth [t] / number of years)
  • 2026: (-39,330 / 3) + (-3,993 / 3) = -14,441

  • 2027 : (-39 330 / 3) + (-3 993 / 3) = -14 441

  • 2028 : (-39 330 / 3) + (-3 993 / 3) = -14 441

Final emissions:

  • per action: 133,100 - 39,330 (A) - 3,993 (B) = 89,777 tCO2eq

  • per year: 133,100 - 14,441 (2026) - 14,441 (2027) - 14,441 (2028) = 89,777 tCO2eq

Did this answer your question?