Development Finance, Blended Capital and Policy
Level 1 — Concessional Finance Design · PPP Structures · Bankability Assessment

This unit establishes the definitional and structural framework for the module. Development finance institutions are defined as publicly owned or publicly mandated financial intermediaries whose mandate includes advancing development outcomes in addition to financial sustainability. Three DFI categories are distinguished: global multilateral institutions (the World Bank Group), regional multilateral institutions (the African Development Bank Group, the Asian Development Bank, and the Inter-American Development Bank), and bilateral institutions owned by a single government (KfW, British International Investment, Proparco, FMO, and the US DFC). The unit explains how ownership structure affects mandate breadth, client eligibility, and the concessional depth of available financing, and introduces additionality at the definitional level.

The World Bank Group comprises five institutions with distinct mandates, client profiles, and product families. IBRD serves middle-income and creditworthy low-income sovereign borrowers through investment project loans and development policy operations. IDA serves the poorest countries through grants and highly concessional credits. IFC serves private sector clients across emerging markets through loans, equity, guarantees, and mobilisation products. MIGA provides political risk insurance to private investors and lenders in developing countries. The unit specifies current lending terms for each window — IDA grant and credit terms, IBRD pricing grids, and IFC loan pricing ranges — and explains the graduation criteria that determine window eligibility.

This unit covers two regional multilateral DFIs in parallel to enable direct comparison. The African Development Bank Group serves 54 African member countries through sovereign and non-sovereign operations; the unit examines the bank group structure, the graduation criteria determining AfDB hardwindow or ADF concessional access, and the non-sovereign operation framework. The Asian Development Bank operates across 68 member countries; learners examine ADB ordinary capital resources operations, the concessional Asian Development Fund, and private sector operations. The unit compares both institutions across client eligibility, environmental and social safeguards, co-financing frameworks, and key operational differences affecting a project developer choosing between them — including processing timelines, procurement requirements, and local currency facility availability.

Bilateral DFIs carry narrower mandates but often provide concessional capital at scale for specific sectors or geographies tied to the home country development agenda. This unit covers four bilateral DFIs: KfW Development Bank and DEG (German development finance), British International Investment (investing in Africa and South Asia), Proparco (French DFI serving private sector clients in developing countries), and FMO (the Dutch entrepreneurial development bank). For each institution the unit specifies mandate, priority sectors, product range, minimum deal size, countries of operation, environmental and social standards, and co-investment conditions. The unit also introduces tied aid and ODA-aligned financing, explaining how these affect the additionality assessment.

This unit examines the structural mechanics of DFI co-financing across three models. Parallel financing describes arrangements in which two or more DFIs each finance separate components of the same project under separate agreements. Syndicated or A/B loan structures describe arrangements in which the DFI acts as lender of record, retaining the A loan and selling the B loan to commercial banks or institutional investors who benefit from DFI preferred creditor status. Blended finance structures describe arrangements in which concessional capital sits alongside commercial capital in a tiered structure designed to attract private investment by absorbing first losses. The unit explains preferred creditor status, umbrella facility agreements governing multiple subprojects, and on-lending through local financial institutions.

This unit is the analytical centrepiece of Module B8. Learners construct a structured comparison matrix covering the five institutions across eight dimensions: mandate and ownership, eligible client types, sovereign product family, private sector product family, concessional depth, environmental and social standards, co-financing framework, and average processing timeline. The unit works through a structured case scenario — a 120 MW solar project in an IDA-eligible Sub-Saharan African country seeking USD 80 million in senior debt and USD 15 million in quasi-equity — applying the matrix to rank available windows, identify screening criteria that eliminate certain institutions, and produce a shortlist with rationale.

When a recognised DFI commits capital to a project, the commitment conveys information to commercial investors about project risk. This unit examines the mechanism through which DFI participation reduces perceived risk and affects the pricing and availability of commercial co-financing, drawing on OECD and DFI research on private capital mobilisation ratios. Three empirical findings receive treatment: guarantees and risk-sharing instruments mobilise more private capital per concessional dollar than direct loans; DFI equity participation mobilises more than debt in early-stage or unfamiliar markets; and blended finance vehicles with a clearly structured first-loss tranche achieve higher mobilisation ratios than programmes with more diffuse concessional support. The unit also introduces the OECD DAC blended finance statistical reporting framework and how mobilised private finance is defined and measured for official reporting purposes.

Concessionality is defined as the financial benefit transferred from a lender or grant-maker to a borrower or recipient through terms more favourable than those available in the commercial market. The unit explains the three dimensions: below-market interest rate (measured as the spread below the reference rate), extended grace period (before principal repayment begins), and extended repayment tenor (IDA credits can reach 40 years). The OECD DAC grant equivalence formula is introduced and worked through step by step — expressed as a percentage of the nominal loan amount, using a 10 percent reference discount rate for ODA-eligible countries. Common errors in grant equivalence calculations receive explicit treatment, including the error of conflating nominal interest rate with grant equivalence.

This unit examines concessional loan design in detail, working through the structural components of an IDA credit, an AfDB ADF loan, and an ADB ADF loan — comparing grace periods, repayment schedules, interest charge structures, and service fee components. The unit explains why different DFIs price concessional products differently despite serving similar country categories, and how IDA credit terms change across replenishment cycles. Sub-sovereign and on-lending structures receive detailed treatment: arrangements in which a sovereign government borrows from a DFI and re-lends to a state-owned enterprise or sub-national government, including the currency mismatch risk and structural protections used to manage it.

This unit covers three grant instrument types. Project grants fund specific, scoped activities with defined inputs and outputs — covering grant agreement structure, disbursement conditions, financial management requirements, and the distinction between retroactive and advance disbursement modalities. Budget support grants provide direct transfers to a recipient government treasury, linked to policy conditions or reform milestones; the unit examines the conditions under which DFIs and bilateral donors use budget support and the minimum public financial management conditions required. Results-based financing structures link disbursement to verified outcomes: the unit designs a results-based financing programme specifying the outcome indicator, independent verification mechanism, disbursement algorithm, and operational risk, using the World Bank Program-for-Results as the leading multilateral example.

This unit distinguishes between three guarantee instrument types. Partial credit guarantees (PCGs) cover the risk of payment default by the borrower irrespective of cause — most commonly used to extend the tenor of commercial bank loans or improve access to local capital markets. The unit examines a PCG structure in which a DFI guarantees the final repayment tranche of a local currency bond, enabling an infrastructure company to access domestic institutional investors. Partial risk guarantees (PRGs) cover specifically government-related risks — breach of contract, non-payment by a government counterparty, and changes in law — and are most commonly used in regulated sectors such as power, water, and transport. First-loss guarantees absorb the first tranche of losses in a portfolio or facility up to a defined ceiling, enabling a commercial lender to deploy capital into a riskier market; this instrument type is introduced here and developed in full in Module 2.1.

Interest rate subsidies reduce the cost of capital by having a DFI or donor fund cover the spread between the commercial rate and the target rate. The unit examines three mechanisms: the direct subsidy model (DFI pays the spread to the commercial lender on behalf of the borrower), the blended rate model (concessional DFI tranche alongside a commercial tranche, with the all-in rate reflecting the weighted average), and the reimbursable subsidy model (conditional grant repayable if specified outcomes are achieved). A blended rate calculation is worked through in full: a USD 100 million solar project financed with USD 40 million at 2 percent per annum (IDA concessional) and USD 60 million at 7 percent per annum (commercial bank) — covering weighted average cost of capital, effective subsidy value in NPV terms, and grant equivalence of the concessional tranche.

Infrastructure and energy projects in emerging markets typically generate revenue in local currency. When these projects are financed in hard currency, a currency mismatch creates exposure: a depreciation of the local currency increases the real debt service burden and can trigger financial distress even when the project operates as planned. This unit examines four instruments available to manage currency mismatch risk: local currency loans issued by DFIs with access to local capital markets, cross-currency swaps converting hard-currency debt to local currency exposure, first-loss foreign exchange facilities providing commercial banks with protection against devaluation below a defined floor, and structured finance mechanisms matching revenue currency with debt currency through domestic capital market issuance. The Currency Exchange Fund, GuarantCo, and MIGA PAYS products receive specific treatment.

A PPP is defined as a long-term contractual arrangement between a public authority and a private entity in which the private entity assumes substantial risk and management responsibility for delivering an infrastructure service in exchange for remuneration linked to performance or service delivery. The unit distinguishes PPPs from conventional public procurement (where the public party retains risk and operational responsibility) and from privatisation (where the public party transfers asset ownership). Three conditions under which PPPs are expected to generate value are examined: demonstrably higher private sector management efficiency, whole-life cost savings when maintenance and operational costs are included, and genuine and appropriately priced risk transfer to the private party. Evidence on where PPPs have and have not met these conditions in Sub-Saharan Africa, South Asia, and Southeast Asia is reviewed.

The PPP spectrum encompasses models with very different risk transfer and financing profiles. This unit examines four model families: management contracts (transferring operational management for a fixed fee, with capital investment and revenue remaining public); lease arrangements (adding revenue collection responsibility to the operator, introducing commercial risk); Build-Operate-Transfer structures (requiring the private party to finance, build, and recover investment through charges or government payments before transferring the asset); and Design-Build-Finance-Operate-Transfer structures (extending private responsibility to cover design, construction, financing, operations, and maintenance for the full concession period). The unit examines why DBFOT structures are most commonly used in power, transport, and water in emerging markets, the minimum contract duration needed for private financing viability, and the conditions under which availability-based or output-based payment mechanisms are preferred over user charges.

Risk allocation is the analytical core of PPP contract design: each risk should be borne by the party best positioned to manage it. This unit applies the principle to the risk categories present in infrastructure concessions — construction, demand, performance, force majeure, foreign exchange, regulatory change, and political risk — examining which are typically allocated to the private party, which are retained by the public authority, and which are shared. A power purchase agreement for an independent power producer is the worked example, tracing how construction risk is allocated through liquidated damages provisions, demand risk absorbed by the offtake agreement, foreign exchange risk addressed through tariff indexation or government guarantee instruments, and political risk managed through MIGA or other political risk insurance. Learners construct a risk matrix for a model transport concession, categorising 15 risk types by allocation, probability, and potential financial impact.

Value-for-money analysis provides the analytical basis for the government decision to procure through a PPP structure rather than conventional public investment. The public sector comparator (PSC) estimates the risk-adjusted cost of the public authority delivering the same infrastructure through conventional procurement; the PPP option offers value for money when the net present cost of the PPP is lower than the risk-adjusted PSC. This unit works through a PSC calculation for a 200-bed district hospital, specifying the raw PSC (public procurement cost in NPV terms), competitive neutrality adjustments (removing tax advantages enjoyed by public entities), retained risk valuation (quantifying risks the public party would retain under conventional procurement), and transferred risk valuation (quantifying risks transferred under the PPP). The unit explains why the retained and transferred risk valuations are the most contested components, and how sensitivity analysis should be applied to test VfM conclusions.

The revenue model determines who bears demand risk and how the private party recovers its investment. This unit examines three revenue model types. User charge models make the private party's revenue directly dependent on the volume of users, creating demand risk and potentially conflicting with affordability objectives. Availability payment models make the government's payment conditional on the asset being made available to specified standards regardless of usage, eliminating demand risk from the private party but creating government fiscal exposure. Hybrid models combine a base availability payment with a variable usage-linked component. The unit quantifies the effect of revenue model choice on the cost of capital available to the project — the absence of demand risk in availability payment structures enables lower commercial debt pricing — using a toll road case study comparing debt pricing achievable under each revenue model.

This unit examines the empirical record on PPP performance outcomes in lower-middle and low-income country contexts across four sectors: power, water, transport, and urban infrastructure. The conditions associated with better outcomes are identified — strong regulatory frameworks, competitive procurement, independent dispute resolution, and government contract management capacity — alongside those associated with worse outcomes: rushed procurement, weak regulatory capacity, demand risk misallocation, and limited private sector competition. Five documented PPP renegotiation cases from Sub-Saharan Africa, South Asia, and Latin America are examined, identifying the contractual provisions that led to renegotiation and the fiscal consequences for the host government. Learners identify the five most common PPP contract design errors and the mitigations available at the contract drafting stage, including the conditions under which PPP is not an appropriate delivery model despite pressure from international advisors or DFIs.

This unit establishes the analytical concept of bankability and its relationship to project viability. A project is economically viable when its projected revenues, operating costs, and capital expenditures produce a positive NPV under reasonable assumptions. A project is bankable when the risk profile of those cash flows can be underwritten by lenders and investors at terms the project can service. The gap between viability and bankability arises when risks cannot be adequately allocated, mitigated, or absorbed by available instruments. Five documented cases are examined: a geothermal power project in East Africa stalled by undeveloped regulatory framework; a water concession in South Asia unable to achieve acceptable tariff levels; a toll road in West Africa with insufficient traffic projection certainty; a solar project in Southeast Asia blocked by offtake agreement creditworthiness concerns; and a port expansion in South America delayed by community consent failures — each analysed for the specific barrier that prevented financing.

This unit introduces and defines the six bankability barrier categories. Contractual barriers arise from gaps, ambiguities, or unfavourable terms in the project's key agreements: offtake, construction, input supply, and concession agreements. Regulatory barriers arise from incomplete, inconsistent, or unpredictable frameworks governing the sector, tariff-setting mechanisms, or licensing processes. Political barriers arise from sovereign risk, breach of contract by government counterparties, expropriation risk, currency transfer restrictions, and political violence. Environmental and social barriers arise from failure to demonstrate compliance with DFI or investor E&S standards, inadequate community engagement, or unresolved land acquisition disputes. Technical barriers arise from design, technology, or construction risk that cannot be sufficiently mitigated through the EPC contract and its performance security provisions. Market barriers arise from insufficient offtake market depth, currency inconvertibility risk, or the absence of local capital market instruments. A diagnostic matrix with 18 questions distributed across the six categories is introduced.

Contractual barriers are frequently the most immediately addressable category because they are within the control of the parties to the project agreements. The unit examines the common contractual gap patterns in emerging market infrastructure projects and the contract provisions used to address them: step-in rights for lenders, termination payment formulae protecting lender recovery in government-initiated termination, force majeure carve-outs allocating specific events to each party, and performance security requirements providing construction risk coverage. Regulatory barriers require engagement with the responsible public authority. Three strategies are examined: regulatory ring-fencing through contract (stabilisation clauses), DFI engagement to support regulatory capacity building, and government-issued comfort letters clarifying regulatory interpretation — with the limitations of each strategy given equal attention alongside their benefits.

Political risk instruments for project finance in emerging markets include MIGA political risk insurance, DFI partial risk guarantees, bilateral investment treaty protections, and export credit agency cover. The unit examines the coverage scope and trigger conditions of each instrument, the cost of political risk cover as a function of country rating and sector, and the structuring decisions required when multiple instruments are combined. Environmental and social barriers require a compliance demonstration satisfying DFI appraisal standards. The IFC Performance Standards are explained as a bankability criterion: lenders accessing IFC co-financing or operating under the Equator Principles require independent E&S assessment against PS 1 through PS 8. The unit specifies the evidence that must be assembled and the independent E&S advisor role in the financing process — teaching learners to identify the E&S compliance gap and understand what closure requires, not to conduct the PS assessment themselves.

Technical barriers frequently arise in first-of-kind technology deployments, complex multi-component infrastructure systems, or construction environments with thin local contractor markets. The unit examines the mechanisms for transferring construction and technology risk to capable parties: fixed-price, date-certain EPC contracts with performance guarantees, technology performance warranties, and structuring of construction period financing to include contingency facilities that prevent cost overruns from triggering lender acceleration. Market barriers cover three categories: absence of long-tenor local currency financing (addressed by the DFI local currency instruments introduced in Module 1.1), insufficient offtake market depth (addressed by offtake agreement restructuring or government backstop mechanisms), and investor unfamiliarity with the jurisdiction or sector (addressed by IFC mobilisation structures, first-loss coverage, or DFI co-investment providing a familiar counterparty for commercial investors).

This unit covers the practical process through which a DFI or commercial bank conducts a bankability assessment during project appraisal. Learners examine the due diligence workstreams running in parallel: legal due diligence reviewing contractual documents, technical due diligence from an independent engineer, environmental and social due diligence by an independent E&S consultant, financial model review by the lender's financial advisor, and insurance due diligence. The unit explains the role of the information memorandum in the financing process — its standard format, content, and the documentation that must be available at information memorandum stage for a project to attract lender interest. The unit concludes with the conditions checklist a DFI uses to determine whether a project is ready for Board approval, with each condition mapped to one of the six bankability barrier categories.