The roadmap provides a viable pathway to net zero for AAC manufacturers but does face three principal risks:

1. Success of the cement and lime roadmaps

The roadmap relies on the success of the cement and lime industry roadmaps to decarbonise by 2050. These roadmaps depend on widespread adoption of CCU and CCUS technology which has an uncertain economic model, and on innovation to develop alternative binders which have not yet been proven as viable raw materials for AAC production.

2. Access to renewable energy sources

To remove factory emissions in the production of AAC, EAACA members will require access to renewable electricity
and to hydrogen as fuel sources. Currently, EU and UK hydrogen policy and infrastructure plans are at an early stage and it is unlikely that hydrogen infrastructure will be rolled out at a uniform pace across member countries.

3. Investment costs

Implementing the roadmap will require long-term action and investment by AAC manufacturers. The main cost for EAACA members is the investment required to upgrade the boilers that provide steam to the autoclaves to run on lower carbon
fuel sources. The speed at which this investment occurs will vary between members.