Iberdrola has raised €1.5 billion through a green bond issuance to support Grid Infrastructure Investment and renewable energy projects across its key markets. The offering attracted more than €4.5 billion in demand, highlighting strong investor confidence in the company’s energy transition strategy and growing interest in sustainable finance solutions that support electrification and clean energy development.
Key Overview
- Iberdrola raised €1.5 billion through a two-tranche green bond issuance
- Demand exceeded €4.5 billion from more than 330 investors
- Proceeds will finance grid infrastructure investments and renewable energy projects
- The issuance complies with ICMA Green Bond Principles and EU Green Bond Standards
- The first tranche matures in 2030 with a 3.125% coupon
- The second tranche matures in 2036 with a 3.75% coupon
- Iberdrola has raised more than €14 billion through green bonds to date
Iberdrola Raises €1.5B Green Bond for Grid Investments
Global energy company Iberdrola has successfully completed a €1.5 billion European senior green bond issuance, strengthening its ability to finance critical electricity grid infrastructure and renewable energy projects.
The transaction attracted exceptionally strong investor interest, generating demand of more than €4.5 billion—approximately three times the amount offered. More than 330 qualified institutional investors participated in the offering, allowing the company to improve the initial pricing terms.
The proceeds will be used to finance investments in electricity networks across the countries where Iberdrola operates and to selectively refinance renewable energy assets, supporting the company’s long-term strategic plan focused on electrification and clean energy growth.
Strong Investor Demand Highlights Market Confidence
The green bond issuance was structured in two tranches totaling €1.5 billion.
The first tranche raised €750 million and carries a coupon of 3.125%, with maturity scheduled for June 2030. The second tranche also raised €750 million and offers a coupon of 3.75%, maturing in June 2036.
Investor demand was geographically diverse, led by France, which accounted for 23% of participation, followed by the United Kingdom at 22%, and Spain and Portugal together accounted for 16%.
The oversubscription reflects strong confidence in Iberdrola’s credit profile, sustainability strategy, and long-term infrastructure investment plans.
Financing the Energy Transition
A major portion of the proceeds will support Grid Infrastructure Investment, an area increasingly viewed as critical to achieving climate and energy goals.
As renewable energy generation expands, modern electricity networks are becoming essential for integrating solar, wind, energy storage, and other clean technologies into national power systems.
Iberdrola said the financing aligns with its strategy to strengthen grid infrastructure while selectively expanding renewable energy investments.
The company has invested heavily in electricity networks, renewable generation, and energy storage for more than two decades, allocating more than €175 billion since 2001 to support electrification and the energy transition.
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Supporting Renewable Energy Growth
Beyond grid infrastructure, the green bond proceeds will also support Renewable Energy Financing initiatives.
Iberdrola remains one of the world’s largest corporate issuers of green bonds and has used sustainable debt instruments to finance projects including renewable energy generation, energy efficiency improvements, clean transportation, and environmental infrastructure.
The company reported that 99% of the financing signed during 2025 qualified as sustainable financing, with total sustainable funding exceeding €66 billion by the end of the year.
Recent examples of Iberdrola’s renewable energy expansion include new solar projects in Italy and a €4.5 billion investment plan aimed at expanding energy networks in Brazil.
Aligning With EU Green Bond Standards
The transaction was structured in accordance with both the International Capital Market Association (ICMA) Green Bond Principles and the European Union Green Bond Standard.
The EU standard is designed to improve transparency, strengthen reporting requirements, and reduce the risk of greenwashing by ensuring proceeds are allocated to eligible environmental activities.
For investors, adherence to these standards provides greater confidence that capital raised through green bonds supports measurable environmental outcomes and contributes directly to climate objectives.
The issuance follows Iberdrola’s pioneering hybrid green bond transaction completed under the EU Green Bond Standard in 2025, reinforcing the company’s leadership in sustainable finance.
Outlook
Iberdrola’s €1.5 billion green bond issuance highlights the growing importance of grid infrastructure as a central pillar of the global energy transition. While renewable energy capacity continues to expand, significant investment in transmission and distribution networks is increasingly necessary to ensure reliable electricity delivery and integrate clean energy at scale.
The strong investor demand for the offering demonstrates continued confidence in sustainable infrastructure investments and the role of green finance in supporting climate goals. As electrification accelerates across sectors, Iberdrola’s focus on both grid modernization and renewable energy development positions the company to play a key role in advancing a more resilient, efficient, and low-carbon energy system across Europe and beyond.
FAQs
1. What will Iberdrola use the €1.5 billion green bond proceeds for?
The proceeds will finance electricity grid investments in key markets and selectively refinance renewable energy projects in line with Iberdrola’s strategic growth plans.
2. Why are grid investments important for the energy transition?
Modern electricity grids are essential for integrating renewable energy sources, improving energy reliability, supporting electrification, and enabling large-scale clean energy deployment.
3. How much investor demand did the green bond attract?
The issuance attracted more than €4.5 billion in demand from over 330 qualified investors, approximately three times the amount offered.
4. Does the bond comply with recognized sustainability standards?
Yes. The bond complies with both the ICMA Green Bond Principles and the European Union Green Bond Standard, ensuring transparency and alignment with environmental financing requirements.
Sources: Iberdrola, ESG Today, ESG News, Demócrata, Enlit World
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