Takeaways

• Iberdrola has raised €1.5 billion ($1.7 billion) through a green bond issuance to support electricity network upgrades and renewable energy projects.
• The offering attracted more than €4.5 billion in investor demand, highlighting strong confidence in green infrastructure investments.
• The bond aligns with both ICMA Green Bond Principles and the European Union’s new Green Bond Standard.

Spanish energy company Iberdrola has secured €1.5 billion ($1.7 billion) through a senior green bond issuance, strengthening its ability to invest in electricity networks and renewable energy infrastructure as demand for clean energy continues to rise.

The financing was divided into two equal tranches of €750 million each. The first tranche will mature in June 2030 and carries a coupon rate of 3.125%, while the second tranche matures in June 2036 with a coupon of 3.75%.

The green bond issuance received a strong response from the market, attracting more than €4.5 billion in orders, three times the amount offered. More than 330 international institutional investors participated in the transaction, allowing Iberdrola to improve pricing terms from its initial guidance.

Investors from some of Europe’s largest financial markets led the demand. France accounted for 23% of participation, followed closely by the United Kingdom at 22%. Spain and Portugal together represented 16% of investor interest.

Read More: Emerging Markets Drive Green Bond Resilience in 2025

Funding Critical Infrastructure for the Energy Transition

Iberdrola said the proceeds will primarily be used to finance grid expansion projects across the countries where it operates. A portion of the funds will also be directed toward refinancing selected renewable energy investments.

As countries accelerate electrification across transportation, industry, and buildings, electricity networks are becoming increasingly important. While renewable power generation continues to grow, modern and resilient grids are needed to connect new clean energy capacity and manage rising electricity demand.

Industry experts and policymakers have repeatedly highlighted grid infrastructure as one of the most important enablers of the energy transition. Insufficient network capacity can delay renewable energy deployment and create obstacles for businesses seeking to reduce emissions.

By raising fresh capital through sustainable finance instruments, Iberdrola aims to strengthen the infrastructure needed to support long-term decarbonization efforts while advancing the goals outlined in its strategic growth plan.

Meeting Higher Sustainability Standards

The bond has been structured in accordance with the International Capital Market Association’s (ICMA) Green Bond Principles. It also complies with the European Union’s newly introduced Green Bond Standard, which seeks to improve transparency and accountability in sustainable debt markets.

The EU framework is designed to help investors better understand how proceeds are used while reducing concerns about greenwashing. As scrutiny around climate-related financing increases, investors are placing greater importance on clear reporting, measurable environmental outcomes, and alignment with transition strategies.

Iberdrola’s emphasis on electricity networks reflects a broader shift in market focus. While renewable generation remains essential, attention is increasingly turning toward the infrastructure required to deliver clean energy reliably and at scale.

Strong Market Support

The transaction was coordinated by HSBC and Santander, with several major financial institutions serving as active bookrunners.

The successful fundraising demonstrates continued investor appetite for high-quality green infrastructure debt. It also highlights the growing role of grid expansion in climate finance strategies, as utilities seek funding to modernize networks and support the integration of renewable energy sources.

Also Read: Sustainable Finance Market Size Set to Double by 2031, Green Bonds Dominate

With electrification accelerating worldwide, investments in electricity networks are expected to play a central role in achieving climate goals. Iberdrola’s latest green bond underscores how private capital is being directed toward the infrastructure needed to power a cleaner energy future.

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Source: ESG NEWS