IPCEI aid can cover up to 100% of your funding gap, calculated from your own financial projections. The claw-back mechanism is what keeps those projections honest.
The logic is simple. Your aid amount is derived from a financial model that projects the project's costs and revenues over its lifecycle. If reality turns out better than the model, the funding gap was smaller than the aid you received. For large aid amounts to first industrial deployment, the IPCEI Communication therefore requires Member States to put a claw-back mechanism in place: when the project generates net revenues above the notified projections, a share of the surplus is repaid to the granting Member State.

Outperformance against the notified model triggers partial repayment.
What it means in practice
– It is asymmetric. If the project underperforms the model, nobody tops up your aid. The downside stays with you; part of the upside goes back to the State.
– It runs for years. Monitoring continues into the operating life of the deployed facility, with reporting against the notified model, not against your latest internal plan.
– It rewards realistic modelling. Inflating the funding gap with pessimistic revenue assumptions maximises aid on paper, and maximises the repayment when the pessimism proves false. It also invites Commission challenge during assessment.
In our experience, claw-back is the provision that most changes how CFOs think about IPCEI. It converts the aid from a grant into something closer to contingent financing: free if your projections hold, partially repayable if you beat them.
The takeaway.
Model the project you actually expect to run. The claw-back turns every optimistic bias into future repayment and every pessimistic bias into assessment risk; the honest model is also the financially optimal one.
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