Currency Mismatch: The Risk That Decides African Financings

Most African infrastructure earns local currency and is financed in dollars or euros. Between those two facts sits the risk that ends more projects than construction delay, operational underperformance, or political change.

The arithmetic is unforgiving. A currency that depreciates materially against the dollar over a financing's life transfers that entire movement onto the borrower's debt service. A project sized comfortably at close can become unserviceable without a single operational assumption proving wrong.

Tariff indexation. The revenue contract is indexed to the hard currency, so payments rise as the local currency falls. This does not remove the risk; it moves it to the offtaker, and behind them usually to the state or the consumer. Where the offtaker is a state utility already under fiscal strain, an indexation clause transfers risk to a party that may not be able to bear it. The clause is only as good as the payer.

Local-currency debt. The cleanest match — revenue and debt in the same currency — and the hardest to obtain at the tenor infrastructure requires. Domestic markets in most African countries do not offer fifteen-year money at scale. Where local pension and insurance capital exists, it is often constrained by prudential rules on what it may hold. Development institutions have made progress issuing in local currency, but capacity is limited relative to need.

Hedging. Available in liquid currencies for short tenors, and expensive or unavailable for the fifteen to twenty years an infrastructure financing runs. Partial hedges covering early years — when debt service is heaviest relative to the amortisation profile — are more realistic than full-tenor cover.

Reserve accounts and covenants. Debt service reserves sized in hard currency give cushion against short movements, not against sustained depreciation. Useful, but frequently over-relied upon.

In practice the risk is rarely eliminated. It is allocated, and the structuring question is to whom:

• The offtaker, via indexation — which works where the offtaker is creditworthy and does not where it is not
• The sponsor, via equity absorbing the movement — which caps the project's size at what the sponsor can bear
• The lender, via longer tenor and looser covenants — which they will price for
• A guarantee provider, via cover that responds to currency events — available from some development institutions, but not universally

Projects that reach financial close have usually made this allocation explicit. Projects that stall are frequently those where every party assumed someone else was carrying it.

• What proportion of revenue is genuinely hard-currency linked, and is the link contractual or assumed?
• If indexation transfers risk to the offtaker, can the offtaker actually pay under a severe depreciation?
• Is local-currency debt available at any tenor, and at what cost relative to the hedged hard-currency alternative?
• Does the debt service reserve cover a plausible depreciation or only a mild one?
• Has anyone modelled the structure against the currency's actual worst historical movement rather than a smooth assumption?

That last question is the one most often skipped, and the one whose answer most often changes the structure.