SUBSIDY-CONTROL AND STATE-AID GUIDANCE

A competition or subsidy-control authority can publish a framework explaining when public support for CDR is legally permissible and how an awarding body should assess it. The guidance may cover grants, tax measures, contracts, guarantees or infrastructure support, but it neither supplies the money nor selects projects. It instead clarifies tests such as public purpose, market failure, incentive effect, proportionality, competition and transparency so programme designers can build lawful support. In the European Union this function belongs principally to the European Commission. Countries with domestic subsidy-control regimes can issue equivalent national guidance.

Guidance needs a clear legal basis and needs to state which public authorities and instruments it covers. Treatment of removal methods needs to reflect net climate benefit, storage duration, technological maturity and the difference between atmospheric removal and avoided fossil emissions. Programme designers need workable tests for necessity, eligible cost, funding gaps, competitive selection, cumulation with other support, maximum aid, duration, clawback, publication and evaluation. Rules need to accommodate early technologies without making unsupported claims or protecting recipients from normal commercial risk. Cross-border transport and storage, international subsidy commitments and changes in costs or carbon revenue also affect proportionality.

Clear guidance can reduce the time and legal uncertainty involved in designing or approving CDR support. Common assessment principles make treatment more consistent across awarding bodies and reveal which evidence applicants must provide. Templates or pre-assessed routes can help smaller authorities use the framework, while evaluation requirements can improve later programmes. Like past renewables support, this lever enables other financial instruments and unlocks strategic climate-driven investment, but creates no project revenue until an authority adopts and funds one.

Loose rules can authorise excessive support, entrench incumbents or encourage subsidy competition between jurisdictions. Rules calibrated to mature clean technologies may be too strict for early CDR, while special treatment without evidence may waste public money. Ambiguous categories can blur removal with fossil-source capture. Lengthy notification or assessment may delay projects, and repeated framework changes can force authorities to redesign programmes. Legal clearance does not ensure environmental integrity or delivery.

Evaluation should examine assessment and approval times, legal challenges, aid amounts, competition for awards, private finance, cumulation, project delivery and recovery of excess support. CDR results should be reported separately from broader decarbonisation activity. Evidence of overcompensation, weak competition or repeated design errors would support revised templates, thresholds or method guidance.

Guidance development should bring together competition and climate authorities, public bodies that award support, courts or review bodies, CDR suppliers, financiers and independent legal and technical expertise. Smaller authorities can identify where compliance costs deter use. Civil society and affected communities should inform transparency, safeguards and scrutiny of claimed public benefits without turning the consultation into project selection.

Supranational authorities can issue guidance where treaty rules give them power to control aid granted by member governments, as in the European Union. National governments can establish and explain their own subsidy-control regimes outside such systems. EU member states design and notify aid within the Commission's framework, but they do not independently set the EU state-aid rules and therefore are users rather than authors of that supranational guidance.