Thread by @JoeriRogelj

*Great NEWS*
Today @IEA published its #NetZero2050Roadmap-a scenario that brings global CO2 emissions down to #NetZero by 2050.

This is the first time IEA presents a detailed picture of how the global economy can be transformed in line with 1.5C (1/n)

iea.org/reports/net-ze…

A detailed look at the report shows that @IEA has done a thorough job.

Modelling choices underpinning the pathway are well argued, reliance on speculative technologies is limited, and the carbon budget is in line with the most ambitious pathways available in the literature (2/n)

In addition, the report also presents a unique collaboration between two of the core flagship teams of @IEA: The World Energy Outlook and the Energy Technology Perspectives.

This in itself presents an exciting development.

Congrats, @Laura_Cozzi_, @TimurGuel and team (3/n)

Of course #NetZero2050Roadmap will be criticized, but this time this criticism is exactly what is required, expected, and, in some way, intended.

Let me explain what I mean by this. (4/n)

We don't know the future, and therefore any report that presents a scenario needs to make a long list of assumptions - these represent tough, yet informed modelling choices.

@IEA #NetZero2050Roadmap has taken this job serious. (5/n)

@IEA #NetZero2050Roadmap limits the use of bio-energy to levels that others, including @IPCC_CH, have indicated can be supplied sustainably. (6/n)

It also includes demand-side and behavioural change measures, which address criticisms of being too supply-side focussed and relying too largely on carbon-capture and storage (CCS). (7/n)

If all is so well-thought-out, what will be criticised?

With @IEA providing a detailed #NetZero2050Roadmap, the important societal discussion about how to achieve it can start. (8/n)

Any scenario is ultimately fiction, and needs to be continuously discussed to serve as a guide for real-world action.
We can now start discussing if and how the bioenergy, CCS, nuclear, behavioral change, and other measures in the @IEA #NetZero2050Roadmap will be delivered. (9/n)

We, including @IEA, can now start critically assessing their assumptions on bioenergy, CCS, or other technologies and ensure they reflect our best understanding of what is technologically feasible & societally desirable. (10/n)

Congrats once again @Laura_Cozzi_ @TimurGuel and team

This is a great achievement, and will undoubtedly play a key role in the sustainability transformation over the next decades. (end)