What to establish before acting
Capture account identifiers, rate schedule, interval availability, current supplier, notices, and the costs included in the proposed product. ComEd’s market context includes PJM, but the customer’s capacity, transmission, and demand calculations need their actual source values and contract treatment. Utility efficiency and analysis programs are separate from supply brokerage. Check current eligibility before counting a rebate or service. An expansion can also require utility and engineering review independently of selecting a supplier.
Illustrative decision boundary
A hypothetical ComEd shop reduces annual lighting kWh but keeps the same billed peak. Energy benefit may be real while the demand charge remains unchanged. Model the tariff components separately and avoid treating a lighting upgrade as proof that a new supplier caused all bill improvement.
Documents for a useful review
- ComEd bill, class, identifiers, intervals, and current supply agreement.
- Component and tag information with actual tariff and contract treatment.
- Current program conditions, operating changes, and verified enrollment records.
Questions & answers
Can I choose supply and keep ComEd delivery?
Eligible choice arrangements separate the supplier from delivery. Confirm account eligibility and the actual class through current utility and ICC resources before scheduling enrollment.
Is the ComEd bill’s total divided by kWh my supply rate?
That blended figure can include demand, delivery, taxes, and adjustments. Locate the actual supply component and match the proposed offer’s scope.
Are capacity and monthly demand identical?
No. PJM-related obligations and utility billed demand can use different periods and quantities. Ask for both calculations rather than assume one kW figure applies everywhere.
Can a supplier remove ComEd charges?
An ordinary competitive contract does not eliminate applicable delivery tariffs. A supplier can bundle or allocate certain costs, so inspect the complete component schedule.
Where should I start an efficiency review?
Use complete data and current utility resources, then define a qualified assessment. Confirm program availability and preserve safe operating needs before assuming any incentive or percentage saving.
Sources & scope
Primary references reviewed October 15, 2026. These sources support the stated concepts; actual tariffs, program rules and signed agreements govern the account. Decision examples and operational worksheets are original educational analysis.
- Illinois ICC: Electric choice basics
Electricity choice and distribution utility roles. - Illinois ICC: Agents, Brokers, and Consultants
Illinois licensing and conduct resources; not a nationwide rule. - ComEd: Large customer program resources
Business metering, analysis, assessments, and utility-program context. - PJM: Capacity Market (RPM)
Capacity auctions, delivery periods, and primary market documents. - DOE FEMP: Evaluating your utility rate options
Demand, ratchets, time-of-use rates, coincident peaks, and standby charges.