SUSTAINABLE FINANCE
A Second Party Opinion (SPO) is an independent third-party verification that a green loan, sustainability-linked loan, social loan, or green/social/sustainability/sustainability-linked bond aligns with the relevant market principles — the Green Loan Principles (GLP), the Sustainability-Linked Loan Principles, or the ICMA Green Bond Principles, Social Bond Principles, and Sustainability-Linked Bond Principles. Lenders, investors, capital market participants, and an increasing number of supervisors will not proceed with a sustainable finance instrument without one. The credibility of the SPO — its provider's recognition by global institutions, the depth of its methodology, and the independence of its assessment — directly determines whether the financing closes on the borrower's intended timeline and at the pricing the framework justifies.
Semtrio delivers Second Party Opinions for issuers, borrowers, and lenders across renewable energy, manufacturing, infrastructure, and banking — recognized by IFC, World Bank, and JP Morgan across 12 SPO engagements that have facilitated $2.8 billion in sustainable financing. Our process is structured for independence, evidentiary depth, and the 3-to-6-week delivery timelines that real financing windows require.
While SPOs are technically voluntary under the Green Loan Principles, the Sustainability-Linked Loan Principles, and ICMA's bond principles, lenders, underwriters, and capital market participants — including IFC, EBRD, JP Morgan, World Bank, and major commercial banks active in sustainable finance — will not proceed without one. For the issuer or borrower, an SPO is the document that converts a sustainability framework into financeable capital.
A Green Loan Principles SPO evaluates the four GLP components: Use of Proceeds, Project Evaluation and Selection, Management of Proceeds, and Reporting. A Sustainability-Linked Loan SPO evaluates the five core SLL principles: KPI selection, Sustainability Performance Target (SPT) calibration, loan characteristics, reporting, and verification. ICMA-aligned bond SPOs assess the equivalent principle structure for green, social, sustainability, and sustainability-linked bonds. Each Use of Proceeds category — renewable energy, energy efficiency, water, sustainable buildings — is assessed separately, with the opinion evidence-referenced throughout.
SPOs from providers without recognized methodology depth, opinions that miss material alignment gaps, or assessments that arrive late into a financing window create three concrete costs: lender repricing, withdrawn or delayed financing tranches, and reputational risk in subsequent issuances. Institutional lenders and bond investors increasingly assess the SPO provider, not just the SPO itself — because the provider's track record is what makes the opinion stand up under regulatory and investor scrutiny.
The most common error in SPO procurement is treating the engagement as a checkbox — selecting the lowest-cost provider, supplying minimal evidence, and expecting a clean opinion to follow. SPO providers operating to global standards do not work that way. A credible SPO is the result of a structured assessment process that interrogates the framework's eligible categories against ICMA criteria, evaluates SPT calibration against scientific or market benchmarks, examines reporting commitments against the issuer's actual data infrastructure, and documents the evidence base supporting every component of the opinion.
Semtrio's SPO methodology is built to that standard. Each Use of Proceeds category is assessed independently. Each SLL KPI is evaluated against materiality, ambition, and SPT calibration criteria. The opinion document is structured to lender and investor expectations, evidence-referenced throughout, and produced on a 3-to-6-week timeline that fits real financing windows. Recognition by IFC, World Bank, and JP Morgan across 12 prior SPO engagements reflects the methodology, not the marketing.
OUR PROCESS
A complete Second Party Opinion — principle-by-principle, category-by-category, evidence-referenced, and delivered within the financing window.
Use of Proceeds categories under green loans and green bonds frequently include energy efficiency, renewable energy, and decarbonization capex — and the SPO evidence package requires verified baseline emissions and project-level emission reduction calculations that meet GHG Protocol standards.
Learn moreSustainability-Linked Loan KPIs and Sustainability Performance Targets receive materially stronger SPO evaluation outcomes when they are anchored to externally validated SBTi targets — converting an SLL ambition claim into an independently scientifically calibrated commitment.
Learn moreUse of Proceeds categories that involve product-level environmental claims — green manufacturing capex, low-carbon products, sustainable building materials — typically require LCA-grade substantiation as part of the SPO evidence package, particularly under EU Taxonomy alignment scrutiny.
Learn moreSustainability-linked instruments and IFRS S2 transition plan disclosure share the same underlying climate target architecture — issuers building SLL frameworks anchored to climate targets are simultaneously building the transition plan content IFRS S2 requires.
Learn more12 Second Party Opinions delivered for IFC, World Bank, and JP Morgan projects. $2.8 billion in sustainable financing facilitated. Independent by design — delivered in 3 to 6 weeks.
Semtrio's Second Party Opinion practice has delivered 12 SPOs across renewable energy, manufacturing, infrastructure, and banking — facilitating $2.8 billion in sustainable financing across green loans, sustainability-linked instruments, and ICMA-aligned bonds. The institutions whose scrutiny matters most — IFC, World Bank, and JP Morgan — have engaged with our SPO work across multiple transactions. That recognition is the product of methodology, not marketing: principle-by-principle assessment, category-by-category evidence review, and independent opinion development structured to the standard institutional lenders and capital market participants apply when they decide whether the financing proceeds.
The independence of the opinion is structural. Semtrio's SPO engagements are delivered separately from any framework design advisory the firm provides to other clients — because an SPO that is not genuinely independent is not an SPO. Issuers, borrowers, and lenders engaging Semtrio for SPO work are engaging the firm specifically as the independent third-party assessor, with the methodology and evidence standards that role requires.
The 3-to-6-week delivery timeline is an operating discipline, not a positioning claim. Real financing windows close on real schedules, and SPO delivery that lags the financing process forces lender repricing, withdrawn tranches, or postponed issuance. Our SPO process is structured around frictionless data requests, clear scope confirmation, and disciplined assessment phases — delivering at competitive global pricing without compromising the assessment depth lenders and investors expect.
Talk to our team about your SPOWhether you're scoping a single service engagement, evaluating end-to-end advisory across multiple clusters, or looking for one accountable partner across strategy and disclosure — start here.
Yaren Ünal
Senior Specialist,Client Solutions
Hamza Söylemez
Specialist,Client Solutions
Frequently asked questions about Second Party Opinions
A Second Party Opinion (SPO) is an independent third-party verification that a sustainable finance instrument — a green loan, sustainability-linked loan, social loan, or green/social/sustainability/sustainability-linked bond — aligns with the applicable market principles. The Green Loan Principles (GLP), the Sustainability-Linked Loan Principles, and the ICMA Green Bond Principles, Social Bond Principles, Sustainability Bond Guidelines, and Sustainability-Linked Bond Principles all define structural requirements that the instrument's framework must meet. While SPOs are technically voluntary under these principles, in practice lenders, underwriters, capital market participants, and an increasing number of supervisors will not proceed with a sustainable finance instrument without one — because the SPO is the document that allows the financing institution to assess whether the instrument's sustainability claims are credible and whether the framework will withstand regulatory and investor scrutiny.
The three SPO types serve different instrument structures and assess different principle frameworks. A Green Loan SPO is structured around Use of Proceeds — proceeds must be allocated to specific eligible green projects, and the SPO evaluates the four Green Loan Principles components: Use of Proceeds, Project Evaluation and Selection, Management of Proceeds, and Reporting. A Sustainability-Linked Loan SPO is structured around Sustainability Performance Targets — the loan's pricing adjusts based on whether the borrower achieves predefined sustainability KPIs, and the SPO evaluates the five SLL components: KPI selection, SPT calibration, loan characteristics, reporting, and verification. A Green Bond, Social Bond, Sustainability Bond, or Sustainability-Linked Bond SPO is structured around the relevant ICMA principles and assessed similarly to its loan counterpart, with the additional capital markets disclosure expectations that public bond issuance entails. Each Use of Proceeds category — renewable energy, energy efficiency, water, sustainable buildings — is assessed separately within the opinion.
An SPO assessment proceeds principle-by-principle, category-by-category, and KPI-by-KPI. The SPO provider reviews the framework document and supporting evidence, evaluates each Use of Proceeds category against the applicable ICMA or GLP eligibility criteria, assesses each SLL KPI for materiality and SPT ambition, examines the management of proceeds governance, evaluates the reporting commitments against the issuer's data infrastructure, and assesses EU Taxonomy alignment where relevant. The output is an independent opinion document that states the alignment finding per principle, identifies any conditions or remediations required, references the evidence base for each component, and provides the methodology note that allows lenders, investors, and supervisors to evaluate the assessment itself. A credible SPO is not a binary pass/fail — it is a structured opinion with documented reasoning that lenders and investors can scrutinize on its own merits.
A typical Semtrio SPO engagement is delivered in 3 to 6 weeks from scope confirmation to final opinion delivery. The timeline depends on three factors: the number of Use of Proceeds categories or SLL KPIs in scope, the completeness of the framework document and evidence package the issuer or lender provides at intake, and the level of EU Taxonomy alignment analysis required. Single-category Green Loan SPOs at the simpler end of the range can be delivered closer to the 3-week mark; multi-category green bond SPOs requiring EU Taxonomy alignment analysis sit at the 6-week end. Real financing windows rarely accommodate longer timelines — which is why Semtrio's SPO practice is operationally structured around this delivery range, with frictionless data requests, clear scope confirmation, and disciplined assessment phases as standard practice.
Semtrio's SPO process follows four phases. We begin with scoping and framework intake — confirming the instrument type, applicable principle framework, Use of Proceeds categories or SLL KPIs in scope, evidence package requirements, and the 3-to-6-week delivery schedule. We conduct principle-by-principle assessment — evaluating each component against the applicable GLP, SLL, or ICMA principles, with each Use of Proceeds category and each KPI assessed independently. We develop the independent opinion — alignment finding per principle, conditions where applicable, methodology note, and evidence appendix, structured to the format institutional lenders and capital market participants expect. We deliver the SPO and remain available through the financing close for lender and investor questions, with post-issuance support for allocation reporting, impact reporting, and SPT verification engagements. Independence is structural: SPO engagements are delivered separately from any framework design advisory the firm provides to other clients, because an SPO that is not genuinely independent is not an SPO.
Talk to our team about your SPOWhether you are an issuer or borrower commissioning your SPO ahead of a green loan, SLL, or green bond — or a lender requiring an independent SPO on a borrower's framework — we will scope the instrument, confirm the applicable principle framework, conduct the principle-by-principle assessment, and deliver the opinion within the 3-to-6-week financing window your transaction requires.
Whether you are an issuer or borrower commissioning your SPO ahead of a green loan, SLL, or green bond — or a lender requiring an independent SPO on a borrower's framework — we will scope the instrument, confirm the applicable principle framework, conduct the principle-by-principle assessment, and deliver the opinion within the 3-to-6-week financing window your transaction requires.
