Spain's largest utility and a global renewables leader, with 23,047 MW of renewable capacity in Spain and a €58bn 2025–2028 investment plan overwhelmingly directed at wind, solar and grid infrastructure.
Green Score
- Greenwashing risk
- low
- Data confidence
- high
- Method
- how it is calculated
Climate Impact & Solution35%87
Does the core business genuinely avoid or reduce emissions, or build climate resilience? Share of revenue that is actually 'green'. Fossil-dependent models score low.
85% of ~58 GW installed capacity is emission-free, with 46,741 MW of operational renewables; 2,700 MW added in 2025 alone and a further 4,600 MW under construction — this is an authentic, large-scale climate-mitigation machine, slightly discounted for ~15% residual fossil/nuclear capacity and retention of combined-cycle gas assets.
Decarbonization & Targets20%85
Credible, science-based targets (SBTi), a real net-zero plan with progress to date, and CDP disclosure — not just a dated press release.
SBTi has formally validated Iberdrola's net-zero science-based target by 2039 (all scopes), with a near-term commitment to reduce absolute Scope 1+2+3 GHG emissions 65% by 2030 from a 2020 baseline, consistent with 1.5°C; as of 2024 the company is reportedly ahead of schedule on its total carbon footprint reduction trajectory, but intermediate Scope 3 tracking granularity remains limited.
ESG & Operations15%62
Operational footprint, labour and social practices, and governance quality across the company's own operations and supply chain.
Sustainability reporting is aligned with ISSB, CSRD, ESRS, and TCFD, and 87.9% of key suppliers met ESG standards in 2024; however, the 'S' and 'G' dimensions are seriously impaired by an ongoing major labour dispute (two general strikes in Spain in 2025–2026 over wages that have fallen 19% in real terms since 2021 despite record profits), court rulings against illegal pay practices, and unresolved governance scandal risks.
Transparency & Verification15%80
Quality of disclosure, independent third-party verification, and how much hard data backs the company's claims.
Iberdrola publishes an integrated annual report aligned with ISSB/CSRD/ESRS/TCFD, discloses a standalone GHG inventory verified externally (PwC study cited), issues green bonds as the world's largest such issuer, and participates in CDP and major ESG indices; disclosure is substantive but Avangrid's industry-association memberships were only partially disclosed in 2024, and some Scope 3 sub-category granularity is lacking.
Integrity15%52
Controversies, litigation, pollution, fossil-fuel lobbying, conflict-zone involvement and governance scandals. Higher means cleaner.
Iberdrola's integrity score is materially dragged down by three live concerns: (1) the 'Caso Villarejo' criminal investigation — Iberdrola formally charged in 2022 for allegedly hiring a corrupt former police commissioner to spy on rivals and executives, with the chairman under investigation since 2019; (2) a separate trial for alleged electricity price fraud/manipulation in Spain; and (3) US subsidiary Avangrid's lobbying for fossil gas infrastructure expansion in Massachusetts in 2025, contradicting the parent's pro-electrification positioning.
Why it's on ClimateTicker
Iberdrola is a genuinely structurally green utility — one of the world's largest renewable energy operators with 46,741 MW of operational renewable capacity and an SBTi-validated net-zero target by 2039, backed by a €58bn 2025–2028 investment plan overwhelmingly directed at wind, solar, and grid infrastructure. The core business model is authentically aligned with mitigation, not merely repositioned fossil assets. However, a serious and unresolved corporate-espionage governance scandal (Caso Villarejo), active litigation over electricity price manipulation, and a protracted labour dispute at record profit margins meaningfully undercut the 'S' and 'G' dimensions of the ESG story.
Commitments & Certifications
Controversy & Greenwashing Watch
Major unions UGT and CCOO called two general strikes in 2025–2026 (9,000+ workers) after 16 months of failed collective bargaining; unions allege staff purchasing power fell 19% since 2021 while the company posted record profits and the chairman's pay rose 6.45%, and Spain's National High Court issued multiple rulings against Iberdrola for illegal pay practices.industriall-union.org
Iberdrola's US subsidiary Avangrid's CEO advocated for fossil gas infrastructure expansion in Massachusetts in June 2025 and previously supported a flexible Clean Heat Standard with a long-term role for gas, contradicting Iberdrola's stated pro-electrification positioning; the company also disclosed only a partial list of its industry association memberships in 2024.lobbymap.org
Iberdrola and four executives faced trial in Spain on allegations of manipulating electricity prices, a matter that also surfaced in US regulatory proceedings involving subsidiary Avangrid.energynews.pro
A 2023 report alleged Avangrid has a history of poor customer service, billing errors, and high rates; subsidiary United Illuminating was accused of mobilising employees to oppose a state regulator's rejection of a rate-hike request.corpwatch.org
Iberdrola's power distribution division was fined €68,667 after a griffon vulture was electrocuted on a Valencia Province power line in 2023, flagging ongoing wildlife harm from grid infrastructure.corpwatch.org
Iberdrola was formally charged in July 2022 by Spain's High Court for allegedly contracting convicted former police commissioner José Manuel Villarejo to spy on business rivals, executives, and opponents of gas projects; Chairman Ignacio Sánchez Galán has been under investigation since 2019.bloomberg.com
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