The Sovereign Green Bond That Wasn't Green Enough

Green bond standards (ICMA GBP, EU Green Bond Standard) require proceeds to fund projects with clear environmental benefits, and the EU GBS adds DNSH and minimum social safeguards. Gas buses are a transition activity: they reduce emissions versus diesel but lock in fossil infrastructure and may fail DNSH (continued GHG emissions, air-quality trade-offs). The key judgement: transition activities can be eligible only if they are on a credible net-zero pathway with a defined sunset (e.g., buses must be zero-emission by a stated date) and DNSH is assessed. A blanket 'cleaner gas' allocation without a phase-out commitment is weak. The ministry's defence ('the standard permits transition') is partially right but incomplete: the standard requires substantial contribution plus DNSH, not merely 'better than the worst option.' Best practice: disclose the gas-bus tranche separately, state the transition rationale and exit date, and publish the DNSH assessment.

A 40% unallocated balance held in a temporary account is not necessarily a problem - sovereign green bonds often have multi-year project pipelines, and holding proceeds in a ring-fenced account is standard. But it signals: (1) execution risk - the government may be slower at deploying capital than promised; (2) additionality risk - if funds sit idle, the bond may be financing projects that would have happened anyway, weakening the 'green' claim; (3) reporting quality - investors should check whether the unallocated balance is disclosed transparently and whether there is a commitment to reallocate to eligible projects if pipelines slip. Investors should ask for: a project pipeline with timelines, the temporary-account rules, and an independent verification of allocation. Persistent under-disbursement is a governance red flag, not a default.

Neither is 'right' - they are applying different mandates, and both can be defensible if disclosed. The excluding fund may have a negative-screen policy (no fossil-fuel-linked assets) or a strict 'no transition' interpretation; buying would breach its stated methodology, so exclusion is consistent. The buying fund may have a transition-alignment mandate that explicitly permits credible transition assets with sunset dates; buying is consistent if it has done the DNSH and additionality work. The real failure would be a fund whose stated policy says one thing and whose holdings say another (greenwashing). The exam-relevant point: labelling is not the same as suitability - the same bond can be appropriate for one mandate and inappropriate for another, and the fund's own disclosure must match its action. Investors should also consider engagement (pressing for a phase-out date) as an alternative to exclusion.