Commonwealth Edison Co. (ComEd) Data Access Guide
Commonwealth Edison (ComEd) is the largest electric utility in Illinois, serving approximately 4.1 million customers in the Chicago area. Illinois is a deregulated market — ComEd provides delivery service while customers can choose their electricity supplier. ComEd supports Green Button Connect My Data (third-party API), Green Button Download, and EDI.
How to Get Your Commonwealth Edison Co. (ComEd) Data: All Access Methods
| Method | 1st Party | 3rd Party | Customer Types | Data Types | Latency | Format |
|---|---|---|---|---|---|---|
| Online Billing Portal | ✓ | — | Residential, Business | Billing history, usage summaries | Real-time | PDF, Web |
| Green Button Download My Data | ✓ | — | Residential, Business | 15-min interval usage | Real-time download | ESPI XML |
| Green Button Connect My Data | ✓ | ✓ | Residential, Business | 15-min interval, billing | Daily updates | ESPI XML via OAuth API |
| Hourly Pricing API | ✓ | ✓ | All (public) | 5-minute electricity prices | Real-time (5 min) | JSON, text, RSS |
| EDI (814/867/820/810) | — | ✓ | Retail Electric Suppliers | Enrollment, daily usage, billing | Daily (867); per cycle (810) | ANSI X12 |
| EUDS Portal | ✓ | ✓ | Building owners/operators | Monthly aggregate, tenant-level | 2-4 weeks | CSV, Excel, ENERGY STAR |
| Business Energy Analyzer | ✓ | ✓ | Business | Hourly usage, demand, benchmarking | Near real-time | Web portal, export |
Billing Data Access
ComEd provides comprehensive billing data through its MyAccount portal, including current and historical bills, detailed breakdowns of supply, delivery, taxes, and riders, with 24+ months of history available.
What Data Is on Your Commonwealth Edison Co. (ComEd) Bill
- Current and historical bills (monthly statements)
- Detailed billing breakdown (supply, delivery, taxes, riders)
- Account balance and payment history
- Bill estimates and rate comparisons
- On-peak and off-peak usage (for TOU customers)
- Billing demand (for demand-based rate customers)
How to Download Commonwealth Edison Co. (ComEd) Bills (Business & Commercial)
- 01Register at https://secure.comed.com/accounts/ with business account number
- 02Navigate to "My Service" > "Usage Data" > "Summary Data Results"
- 03Select service agreement number(s) and date range for analysis
- 04Use "What Uses Most" feature to identify peak usage periods
- 05For recording meter accounts, enroll in Energy Insights at https://secure.comed.com/Pages/energy-insights-online-enrollment.aspx
How to Download Commonwealth Edison Co. (ComEd) Bills (Residential)
- 01Visit https://secure.comed.com/accounts/ and click "Create Account" with your account number from your paper bill
- 02Provide email and create password, then verify email address
- 03Log in at https://secure.comed.com/MyAccount/
- 04Click "My Bill Details" in left navigation, then "Account History" for past bills
- 05Select date range and click individual bills for detailed breakdowns
- 06Click "Download PDF" to save bills locally
- 07Set up Paperless eBill under Billing Options for email delivery
Third-Party Access to Commonwealth Edison Co. (ComEd) Billing Data
Green Button Connect My Data (OAuth)
- 01Customer identifies registered Green Button provider (Urjanet, Arcadia, PowerAdvocate, Bidgee, etc.)
- 02Customer clicks authorization link in third-party app, redirected to ComEd authorization portal
- 03Customer logs into ComEd MyAccount and reviews data access request scope
- 04Customer clicks "Authorize" - third-party receives OAuth token for automatic data retrieval
- 05Data updates daily; customer can revoke access anytime from MyAccount portal
EUDS (Energy Usage Data System)
- 01Building owner enrolls building at https://www.energyusagedata.com/
- 02Provides building address, type, square footage, and verifies ownership
- 03Third-party aggregator registers as EUDS administrator with business license and references
- 04Building owner signs authorization specifying buildings, data type, and duration
- 05Aggregator views all assigned buildings and downloads CSV/Excel data or connects to ENERGY STAR Portfolio Manager
Want to understand the charges on your bill?
See the Commonwealth Edison Co. (ComEd) Rate Schedules & Tariff Guide →Interval Data & Smart Meters
ComEd has deployed over 3 million smart meters (targeting 4 million by 2026) with 15-minute interval capability. Data is accessible through direct download, Green Button DMD/CMD, and the Hourly Pricing API for real-time 5-minute price data.
How to Download Commonwealth Edison Co. (ComEd) Interval Data via Green Button
- 01Log into https://secure.comed.com/MyAccount/
- 02Navigate to "My Usage" section and look for "My Green Button Data"
- 03Select desired date range for data export
- 04Click "Download Green Button Data" to receive ESPI XML file
- 05Import into Green Button certified applications or parse XML for analysis
How to Download Commonwealth Edison Co. (ComEd) Interval Data via Portal
- 01Log into MyAccount and verify account has interval-capable meter
- 02Navigate to "Usage Data" > "View Account Usage Data" > "Order Interval Data"
- 03Enter business name, contact name, email, and mailing address
- 04Review order summary with service agreement number and estimated charge
- 05Process payment if charge applies and submit request
- 06Receive download link via email within 3-5 business days with 15-minute CSV/XLS data
Interval data is essential for rate comparison and TOU analysis.
See which Commonwealth Edison Co. (ComEd) rate schedule is best for your usage pattern →Third-Party API Access
ComEd provides a public, unauthenticated REST API for 5-minute electricity pricing data. Available to anyone without registration, it supports JSON, text, and RSS formats for real-time and historical price feeds.
Available Commonwealth Edison Co. (ComEd) API Endpoints
| Function | Endpoint | Method | Format |
|---|---|---|---|
| 5-Minute Price Feed (Last 24h) | https://hourlypricing.comed.com/api?type=5minutefeed | GET | JSON, text, RSS |
| 5-Minute Price Feed (Custom Range) | https://hourlypricing.comed.com/api?type=5minutefeed&datestart=YYYYMMDDhhmm&dateend=YYYYMMDDhhmm | GET | JSON, text, RSS |
How to Register as a Commonwealth Edison Co. (ComEd) API Vendor
- 01No registration required - API is publicly accessible
- 02Build HTTPS GET request to https://hourlypricing.comed.com/api with type=5minutefeed parameter
- 03Add optional datestart/dateend parameters for historical data (format: YYYYMMDDhhmm)
- 04Add format parameter: format=json (default), format=text, or format=rss
- 05Parse JSON response containing timestamp and price fields
- 06Review terms of service at https://hourlypricing.comed.com/comed-hourly-pricing-apis-terms-of-service/
EDI (Electronic Data Interchange)
ComEd supports comprehensive EDI for Retail Electric Suppliers (RES), aggregators, and trading partners in the deregulated Illinois market. Governed by the Illinois CPWG, transactions follow ANSI X12 Version 004010 with both VAN and direct connection options.
Supported Commonwealth Edison Co. (ComEd) EDI Transaction Sets
| Code | Name | Purpose |
|---|---|---|
| 814 | Enrollment Request | RES initiates customer enrollment and supply changes with ComEd |
| 814e | Enrollment Response | ComEd confirms enrollment acceptance or rejection with reason codes |
| 867 | Daily Usage | ComEd sends daily meter reads and kWh consumption data to RES |
| 820 | Remittance Advice/Payment | RES submits payment information and invoice references to ComEd |
| 810 | Invoice | Consolidated billing invoices between RES and ComEd (Single Bill Option) |
How to Enroll in Commonwealth Edison Co. (ComEd) EDI
- 01Ensure company is licensed as RES in Illinois with DUNS number and ICC registration
- 02Contact ComEd RES administration with company name, DUNS, and primary contact
- 03Download and complete EDI Profile Information and Trading Partner Setup Form from CPWG resources
- 04Select communication method: VAN provider (e.g., Sterling Commerce) or direct SFTP/HTTP connection
- 05Receive test environment endpoint URL and credentials from ComEd
- 06Configure ISA15 to "T" (test mode) and submit test 814 enrollment transactions
- 07Validate 814e responses, 867 usage records, and 997 acknowledgments in test environment
- 08After successful testing, switch ISA15 to "P" (production) and begin live enrollment submissions
Rate Schedules & Tariff Analysis
Illinois is fully deregulated — ComEd is a delivery-only utility that does not generate electricity. Customers pay ComEd delivery charges (fixed) plus generation supply from either ComEd default service (hourly wholesale market rate passed through) or an Alternative Retail Electric Supplier (ARES). Municipal aggregation programs also negotiate group supply rates for entire communities.
Commonwealth Edison Co. (ComEd) Rate Schedule List
| Schedule | Applicability |
|---|---|
| BES | Basic Electric Service — default supply at hourly market rates for all customers |
| BESH | Basic Electric Service Hourly — real-time hourly pricing for enrolled customers |
| WH | Watt-Hour Delivery — residential delivery charges for energy-only metered customers |
| SCS | Single Charges per kWh — simplified commercial delivery for small businesses |
| GS | General Service — commercial delivery with demand charges above 100 kW |
| LS | Large Service — industrial delivery with demand charges for 400+ kW customers |
| HTS | High Tension Service — transmission-voltage delivery for largest industrial users |
Commonwealth Edison Co. (ComEd) Rate Features & TOU Details
- Fully deregulated — customers choose their electricity supplier via ARES or municipal aggregation
- ComEd provides delivery only (transmission + distribution) — no generation ownership
- Default supply (BES) passes through PJM hourly wholesale market prices without markup
- Hourly Pricing program exposes real 5-minute prices via public API for demand response
- Municipal aggregation allows towns/cities to negotiate group supply rates for all residents
- RECs (Renewable Energy Credits) available through Illinois Shines and suppliers
- Capacity charges based on PJM Reliability Pricing Model (RPM) peak load contribution
For a deeper analysis including cost optimization strategies and historical rate trends:
Read the full Commonwealth Edison Co. (ComEd) Rate Optimization Guide →Other Data Access Programs
Energy Usage Data System (EUDS)
Specialized platform for building owners/operators to access whole-building energy data for single and multi-tenant buildings (4+ tenants). Supports ENERGY STAR Portfolio Manager integration and automated monthly data updates.
Business Energy Analyzer
Free tool for business customers providing usage analysis by time-of-day, annual trends, cost breakdowns, demand charge analysis, and facility benchmarking with energy efficiency recommendations.
Open Energy Hub (Anonymized AMI Data)
ComEd provides aggregated, anonymized 30-minute interval data by ZIP code through Oak Ridge National Laboratory for research purposes. Multiple years of historical data available.
Hourly Pricing Program
Real-time pricing program with public 5-minute price API. Enables automated demand response, home automation integration, and energy trading through unauthenticated REST endpoints.
Limitations & Considerations
- ⚠Direct interval data download requires formal request process (3-5 business days) and may incur a charge
- ⚠Limited comprehensive API documentation beyond the Hourly Pricing API
- ⚠Most interval data access is delayed (not real-time) - typically next-day availability
- ⚠No centralized developer portal for all API integrations
- ⚠EUDS limited to multi-tenant buildings with 4+ tenants or designated single-tenant access
- ⚠EUDS data typically available 2-4 weeks after month-end (monthly granularity only)
Commonwealth Edison Co. (ComEd) Data Access FAQ
How do I get 15-minute interval data from ComEd for my commercial portfolio?▾
Sign into your ComEd account, navigate to My Usage, then use Green Button Download My Data to export 15-minute or hourly interval data in XML (ESPI) or CSV format. Data is available for up to 24 months. For automated ongoing access, register as a Green Button Connect vendor.
Does ComEd support automated third-party API access?▾
Yes. ComEd supports Green Button Connect My Data, which provides OAuth-based API access for authorized third parties. Register as a vendor through ComEd's Green Button Connect program. Once registered, customers can authorize your application via the ComEd portal, and data flows automatically.
Can I choose my electricity supplier with ComEd?▾
Illinois is fully deregulated for electricity supply. ComEd provides delivery (wires) service at regulated rates. You can shop for a competitive supplier through the Illinois Commerce Commission comparison site (pluginillinois.org) or contract directly with ARES (Alternative Retail Electric Suppliers). Switching is free and doesn't affect reliability.
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