Building investable pathways for Spain’s transition

By Green Finance Institute | April 22, 2026

Across Europe, the success of the economic energy transition relies on whether countries can create enabling policy environments that give investors the confidence to deploy capital at scale. Financial institutions rarely create markets; that is the role of governments —and Spain has taken two important steps in this direction.

Firstly, in late 2024, the Government approved the Libro Verde sobre Finanzas Sostenibles ¹, a strategic roadmap to align the financial system with climate and environmental goals and orient investment toward sustainable activities especially SMEs. Then in 2025, this was followed by the creation of the Consejo de Finanzas Sostenibles ², a governance body chaired by the Ministry for the Economy that brings together ministries, supervisory public bodies, financial and insurance institutions and select civil society organisations, including GFI España, into a single coordination platform.

One of the working groups pulled together under the Consejo was the Grupo de Trabajo4(GT4). Co-led by GFI España and the Treasury, GT4 was tasked with identifying which financial products, mechanisms and market structures can mobilise capital into Spain’s priority transition sectors and what initiatives and innovative financial structures and products are needed to unlock them. This is crucial given that Spain’s Plan Nacional Integradode Energía y Clima(PNIEC) ³ estimates that €114 billion will be needed for renewable energy and associated infrastructure between 2021 and 2030. For buildings, the PNIEC includes the retrofit of 1.4 million homes by 2030, with €4.2 billion in public funds expected to mobilise roughly €32 billion in total investment. For industry, the PERTE de Descarbonización Industrial ⁴ forecasts nearly €12 billion of investment to decarbonise manufacturing systems. Public finance can cover only a small share of this need; private capital must fill the gap. The question, therefore, is whether policy provides adequate de-risking to attract private investment on the scale required.

Our findings from convening the GT4 indicate Spain’s barriers are less about capital availability and more about how markets are structurally organised and how to boost demand with tailored financial solutions. In response, our proposal structures a framework built around four strategic “palancas,” or levers. The first lever focuses on regulatory and administrative improvements, such as harmonising procedures across autonomous communities, simplifying access to subsidies and aligning national regulations with EU directives to provide long-term certainty to investors. The second centres on financial innovation and public–private collaboration, calling for the expansion of blended finance, risk sharing mechanisms and quasi-equity tools. Stakeholders emphasised the importance of guarantees, mezzanine finance and first loss tranches, particularly for first of a kind industrial projects, alongside instruments like carbon contracts for difference to derisk early-stage technologies.

The question, therefore, is whether policy provides adequate derisking to attract private investment on the scale required

The third lever aims to stimulate demand, highlighting the role of Certificados de Ahorro Energético (CAEs) (White certificates) in monetising energy savings and the value of allowing such certificates to serve as collateral. Socially-targeted measures could also help extend retrofit and efficiency programmes to vulnerable households. The fourth lever addresses production capacity, including the training, supply chain development and industrial capabilities needed to deliver the transition at scale. Finally, GT4 proposes a national dashboard to track sustainable finance flows, aligned with EU taxonomy, Sustainable Finance Disclosure Regulation (SFDR) and Pillar III reporting, a critical step toward improving transparency, comparability and accountability across the system.

The result forms the basis of a blueprint for turning Spain’s climate goals into an investable opportunity. For buildings, for example, clearer regulation, streamlined incentives, project aggregators and property linked finance could accelerate retrofits and help bridge the multibillion-euro gap between ambition and current renovation rates. For industry, combining public and EU funding via blended finance and guaranteed offtake mechanisms could make the €12 billion PERTE pipeline more bankable. For clean energy, addressing permitting constraints and expanding risk sharing tools could unlock a significant portion of the €114 billion investment need. In every case, finance can act as the facilitator only once policy has established the market architecture for capital to flow.

In the coming six months, the GT4 will build on this blueprint, consulting the market on a prioritisation matrix based on impact, complexity, policy and affordability to then propose a detailed, market tested action plan that scales sustainable financial products and structures. The ensuing stage of prioritisation and implementation will determine whether the billions required for the transition can be mobilised in time. If achieved, Spain’s model could become a reference point for how countries can use policy to enable, and finance to facilitate, a greener, more competitive economy.

This article was originally published in the March edition of Green Finance Quarterly. Read the full publication here.