Electric Rates and Tariffs: Frequently Asked Questions

All of our customers purchase delivery service from Con Edison. However, you have the choice to purchase electricity supply from Con Edison or another company.

If you buy electricity from Con Edison, the total supply charges on your bill are made up of Supply, the Merchant Function Charge, the Clean Energy Standard Supply Surcharge, and Gross Receipts Taxes & other surcharges.

• Residential/Small Non-Residential
  If you’re on a residential or small non-residential service plan (SC or EL 1, 2, 6, or 12 energy only), Supply includes the Market Supply Charge (MSC) and any MSC adjustments. Supply is based on your energy usage per kilowatt hour (kWh).
• Demand-Billed
  If you’re on a demand-billed service plan (EL 5, EL 8, EL 9, EL 12 demand, or EL 13), Supply is divided into Energy Supply, which is determined per kWh, and Demand Supply, which is determined per kilowatt (“kW”). The charge for Energy Supply includes the MSC and MSC adjustments. The per-kW charge for Demand Supply is the estimated cost of capacity, as shown on the Statement of MSC - Capacity.

Use our Market Supply Calculator to calculate the total cost of energy based on New York Independent System Operator (NYISO) day-ahead market prices. The calculation is load-weighted by the rate class's hourly load shape and adjusted for losses. The calculator also includes Ancillary Services Charges, New York Power Authority Transmission Adjustment Charges (NTAC), and Transco Facilities Charges (TFC)—all adjusted for losses. The MSC rate per kWh from the calculator includes capacity costs for customers on non-demand service plans (EL 1, EL 2, EL 6 and EL 12 energy only).

The calculator does not include MSC Adjustments or Demand Supply charges for customers billed under EL 5, 8, 9, EL 12 demand, and EL 13.

You may be on Rider M Day-ahead Hourly Pricing. This means your MSC per kWh is based on your actual hourly usage and the calculator includes hedging impacts that don’t apply to you. You can still use the calculator to roughly estimate your MSC per kWh.

If you are on Rate II of EL 5, EL 8, EL 9, or EL 12, use the rate for Rider M Exempt customers. When calculating your Energy Supply charge, do not include MSC adjustments, as these do not apply to Rider M customers.

If you are on Rate III of SC 2 or SC 5, or Rate IV of SC 8, 9, or 12, or Rate V of SC 1; you are subject to the same supply and supply-related charges and adjustments applicable to customers on Rate I of SC 1,2, 5, 8, 9, or 12.

If you are on Rate IV of SC 5, Rate V of SC 8, 9, or 12, or Rate II of SC 13, you are subject to the same supply and supply-related charges and adjustments as customers on Rate II of SC 5, 8, 9, or 12, or Rate I of SC 13.