Spring 2025 Utility Decarbonization Report
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Spring 2025 Utility Decarbonization Report
Instead of waiting for all disclosures, we shared the most complete snapshot available as of January 2025—enabling earlier, data-driven decisions. This faster, more transparent approach helped pave the way for the expanded Fall 2025 edition.
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What’s New in Spring 2025
Metric 06: Normalized Emissions Reduction per Billion Invested
The emissions reduction per billion invested metric replaces the planned capital expenditure (CAPEX) metric from previous editions of the report, due to limited data availability.
Top 5 Investor-Owned Utilities of Spring 2025
These IOUs are leading the way in carbon-free generation, emissions reduction, and sustainability investment.
These top performers rank highest across six decarbonization metrics, from emissions intensity to fuel mix in clean energy.
Curious how the rest compare? Download the full rankings for all 47 IOUs.
Why This Report Matters
The U.S. utility sector is at a turning point. As pressure builds to transition to carbon-free energy, this report offers a transparent, side-by-side look at which investor-owned utilities are truly making progress.
From emissions intensity to emissions reduction per billion invested, it empowers decision-makers across the utility ecosystem—policymakers, sustainability officers, regulators, and investors—with the insights they need to move forward confidently.
Accountability
Comparative rankings create transparency across 47 top utilities—tracking emissions, investment, and progress.
Decarbonization Insights
See how utilities are transitioning their fuel mix and reducing carbon intensity across Scope 1, 2, and 3.
Informed Action
Use the data to inform policy, investment, or internal decarbonization strategies with confidence.
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NPUC
The National Public Utilities Council (NPUC) is a leading research organization dedicated to expediting progress in the clean energy transition through industry-wide collaboration.
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