What Consolidated Edison, Inc. told the SEC could break it.

Con Edison is a potentially responsible party at numerous Superfund/remediation sites (e.g., 100% of total liability at Curcio Scrap Metal, NJ; 6% at Cortese Landfill, NY; plus Berry's Creek and others), with actual liability that could differ substantially from estimated amounts.

“Site Location Start Court or Agency % of Total Liability Cortese Landfill Narrowsburg, NY 1987 EPA 6.0% Curcio Scrap Metal Saddle Brook, NJ 1987 EPA 100.0% Metal Bank of America Philadelphia, PA 1987 EPA 1.0% Global Landfill Old Bridge, NJ 1988 EPA 0.4% Borne Chemical Elizabeth, NJ 1997 NJDEP 0.7%”

After selling its Clean Energy Businesses to RWE, Con Edison retains a reimbursement-and-indemnity obligation for potential costs of an Imperial County, CA battery-storage project, with exposure of up to approximately $172 million (no material amount accrued as of Dec 31, 2025).

“Following the sale of all of the stock of the Clean Energy Businesses and pursuant to a reimbursement and indemnity agreement with RWE, Con Edison remains responsible for certain potential costs related to a battery storage project located in Imperial County, California. Con Edison's exposure under the agreement could range up to approximate ly $ 172 million.”

Con Edison's utilities depend on natural gas delivered by interstate pipelines (distributed through ~4,374 miles of CECONY mains) and on electricity/gas purchase, transportation, and storage agreements (~$4.9B of gas supply/transport/storage contract obligations plus power-purchase agreements) to serve customers.

“Natural gas is delivered by interstate pipelines to CECONY at various points in or near its service territory and is distributed to customers by the company through an estimated 4,374 miles of mains and 379,939 service lines.”

The EPA's April 2024 Section 111 Rule regulates GHG emissions from new gas-fired combustion turbines and existing coal/oil/gas boilers, prescribing 90%-capture carbon capture and sequestration (CCS) as the best system of emission reduction — a rule Con Edison intervened on in D.C. Circuit litigation and that could raise compliance costs.

“In April 2024, the EPA issued a final Section 111 rule (Section 111 Rule) regulating GHG emissions from new electric-generating gas-fired combustion turbines and existing coal, oil, and gas-fired boilers used to generate electricity. The Section 111 Rule included carbon capture and sequestration (CCS) at a 90% capture rate as the BSER for certain new gas-fired combustion turbines and certain existing coal-fired boilers.”