Banco Santander has published its Green Bond Report 2024, confirming that three outstanding green bonds totalling EUR 3 billion have been fully allocated to a portfolio of 72 renewable energy projects spanning offshore wind, onshore wind, and thermosolar installations. The report, published in December 2025, provides investors and regulators with a comprehensive account of how the proceeds have been deployed across Europe's clean-energy transition, leaving no capital unaccounted for.
The 72 projects comprise 24 greenfield developments — new installations built from scratch — and 48 brownfield projects, meaning existing sites that have been upgraded or refinanced. Together they represent Santander's commitment to channelling capital market funding directly into the infrastructure required to meet Europe's renewable energy targets, with each of the three bonds confirmed as 100% allocated. The mix of greenfield and brownfield reflects a deliberate strategy to support both new capacity and the optimisation of existing assets, which carry different risk and return profiles for the bank's balance sheet.
CARBON AVOIDANCE AND PROJECT METRICS
The report discloses that the financed portfolio avoided 702,600 tonnes of CO2 emissions during 2024, equating to an intensity of 234 tonnes of CO2 avoided per EUR million invested. This carbon-avoidance figure serves as a core metric for institutional investors evaluating the environmental credentials of their green bond holdings, and Santander has calculated it in line with standard industry methodologies to allow straightforward comparison across issuers operating in the same reporting frameworks. The specificity of the disclosure — breaking down avoided emissions to a per-million-euro intensity — demonstrates the level of granularity that the market increasingly expects from green bond reports.
The breadth of technology covered — offshore wind, thermosolar, and onshore wind — reflects the bank's strategy of diversifying across renewable subsectors rather than concentrating exposure in a single technology. Offshore wind projects, which typically carry higher construction risk but generate more predictable output, sit alongside the more established onshore wind and thermosolar assets, giving the portfolio a balance of risk and return profiles that underpins the allocation's long-term credibility with investors who scrutinise the quality as well as the quantity of green bond deployment.
TRANSPARENCY AS A STRATEGIC TOOL FOR INVESTORS
Green bond reporting has become an increasingly important element of issuer credibility as investors and regulators scrutinise the gap between labelled bond issuance and verifiable environmental impact. By publishing project-level detail and a clear allocation methodology, Santander aims to address the concern among asset managers that green bonds can obscure whether capital is genuinely driving additionality or simply refinancing assets that would have been built regardless of green bond market participation.
The report positions Santander alongside European peers that have moved toward granular, project-by-project disclosure rather than aggregated portfolio summaries. For the bank, maintaining investor confidence in its green bond framework is strategically important given that labelled green debt has become a key funding tool for financing the energy-transition projects at the heart of its European lending book. The consistency of full allocation across all three outstanding bonds reinforces the framework's operational credibility.
Santander has not announced any new green bond issuance alongside the publication of this report, but the full allocation of existing bonds signals capacity to tap the market again should pipeline project volumes and market conditions support a fresh transaction in the period ahead.