Marin Clean Energy (MCE) Data Access Guide
Marin Clean Energy (MCE) is California's first Community Choice Aggregator, providing renewable electricity generation to about 600,000 customer accounts across four Bay Area counties. As a CCA, MCE handles generation and programs only; PG&E continues to own the wires and provides metering, billing, and all customer data access. Customers receive a single PG&E bill and access usage data through PG&E's Green Button, My Energy, and Share My Data systems.
How to Get Your Marin Clean Energy (MCE) Data: All Access Methods
| Method | 1st Party | 3rd Party | Customer Types | Data Types | Latency | Format |
|---|---|---|---|---|---|---|
| PG&E My Account Portal | ✓ | — | All | Billing, usage | Monthly | PDF, CSV |
| PG&E Green Button Download | ✓ | ✓ | All | 15-min interval | Next-day | ESPI XML |
| PG&E Share My Data | ✓ | ✓ | All | Billing + interval | ~2 business days | ESPI XML / JSON (OAuth) |
| PG&E EDI | ✓ | ✓ | C&I / ESPs | Transactions (814/820/867/810) | Event-driven | ANSI X12 |
| MCE Peak Flex Market | ✓ | ✓ | All MCE | DR performance (meter-based) | Per event | Program platform |
| MIDAS / CEDARS (public) | ✓ | ✓ | Public | Rates / aggregated program data | Current | API / CSV |
Billing Data Access
MCE customers do not receive a separate MCE bill. They receive one integrated PG&E bill that itemizes MCE generation charges separately from PG&E delivery charges, taxes, and fees. All billing data access flows through PG&E's My Account systems, not MCE.
What Data Is on Your Marin Clean Energy (MCE) Bill
- Integrated PG&E bills with MCE generation line items (PDF)
- Monthly usage in kWh
- MCE generation vs. PG&E delivery cost breakdown
- Account and service-period details
How to Download Marin Clean Energy (MCE) Bills (Business & Commercial)
- 01Sign in to the PG&E business account at https://www.pge.com/en/account.html
- 02Open Billing and review the integrated bill with MCE generation charges
- 03Use My Energy / Usage for daily and monthly consumption
- 04For interval data, use Green Button Download My Data or authorize Share My Data
- 05For EDI, coordinate through PG&E (EDISupport@pge.com)
How to Download Marin Clean Energy (MCE) Bills (Residential)
- 01Visit https://www.pge.com/en/account.html and sign in or create a PG&E account
- 02Navigate to Billing / View your bill
- 03Open Past bills / Billing history and select a date range (5+ years available)
- 04Download or view individual bills in PDF; MCE generation charges are itemized separately
Third-Party Access to Marin Clean Energy (MCE) Billing Data
PG&E Share My Data (Green Button Connect)
- 01Customer logs in to PG&E and opens Share My Data / Sharing Account Access
- 02Selects the registered third party and the data elements (billing, usage, interval)
- 03Sets an expiration date and confirms authorization
- 04PG&E delivers data to the third party via secure OAuth API (about 2 business days latency)
Nectar API (third-party)
- 01Nectar provides API access to MCE/PG&E billing data — see docs.nectarclimate.com
- 02Customer authorizes access through Nectar's authorization flow
- 03Nectar retrieves and normalizes billing/usage including MCE generation line items
Want to understand the charges on your bill?
See the Marin Clean Energy (MCE) Rate Schedules & Tariff Guide →Interval Data & Smart Meters
MCE's territory is fully covered by PG&E's Advanced Metering Infrastructure (AMI), which records electricity usage at 15-minute intervals. MCE customers access interval data entirely through PG&E's portal, Green Button Download, Share My Data, and the EnergyInsights API.
How to Download Marin Clean Energy (MCE) Interval Data via Green Button
- 01Log in to PG&E at https://www.pge.com/en/account.html
- 02Go to Usage Tools then Download My Data (Green Button)
- 03Select the service agreement ID and a date range (up to full available history)
- 04Download the ESPI/XML file containing 15-minute interval readings
- 05Import into energy-management or analysis tools
How to Download Marin Clean Energy (MCE) Interval Data via Portal
- 01From the PG&E dashboard, open Energy Usage / My Energy
- 02View daily/hourly usage graphs
- 03Use Usage Tools to export detailed usage in CSV
Interval data is essential for rate comparison and TOU analysis.
See which Marin Clean Energy (MCE) rate schedule is best for your usage pattern →Third-Party API Access
MCE does not operate its own customer-data API. All programmatic third-party access for MCE customers is provided by PG&E's Share My Data (Green Button Connect) and the EnergyInsights REST API. Third parties register with PG&E, obtain OAuth credentials, and receive customer-authorized billing and 15-minute interval data.
Available Marin Clean Energy (MCE) API Endpoints
| Function | Endpoint | Method | Format |
|---|---|---|---|
| Authorized usage/interval retrieval (Green Button Connect) | PG&E Share My Data / EnergyInsights REST API (credentials issued on registration) | GET | ESPI XML / JSON |
How to Register as a Marin Clean Energy (MCE) API Vendor
- 01Register as a third party in PG&E's Energy Data Hub
- 02Provide business details and use case; receive OAuth client credentials
- 03Implement the Green Button OAuth authorization flow
- 04Request interval/billing data via PG&E endpoints once the customer authorizes
- 05Parse ESPI/XML or JSON responses into your platform
EDI (Electronic Data Interchange)
MCE does not directly operate EDI trading-partner transactions; as a CCA it relies on PG&E's EDI infrastructure for wholesale and large-customer data interchange. Large C&I customers and Energy Service Providers register with PG&E for EDI; MCE directs such requests to PG&E.
Supported Marin Clean Energy (MCE) EDI Transaction Sets
| Code | Name | Purpose |
|---|---|---|
| 810 | Invoice | Billing document transmission |
| 814 | General Request/Response | Account inquiry and modifications |
| 820 | Payment Order | Billing payment instruction |
| 867 | Product Delivery Status | Load profiling and usage data |
How to Enroll in Marin Clean Energy (MCE) EDI
- 01Contact MCE Business Services (888-632-3674); MCE directs you to PG&E's EDI program
- 02Register with PG&E EDI Support (EDISupport@pge.com) with company and tax details
- 03Execute PG&E's EDI Trading Partner Agreement
- 04Complete the EDI Setup Form and specify transaction sets (814, 820, 867, 810)
- 05Implement X12 translation software and connect via VAN or direct SFTP/HTTPS
- 06Run test transactions; PG&E validates and approves for production (typically 4-8 weeks)
Sources
Rate Schedules & Tariff Analysis
On the MCE bill, only the generation line differs by provider; PG&E delivery and most fees are identical whether a customer takes MCE or PG&E generation. As of April 1, 2026, MCE Light Green generation ($141.44 on the B1 commercial example) is roughly on par with PG&E generation ($142.15), while Deep Green ($155.82) carries a modest 100%-renewable premium of about $14/month. MCE reduced generation rates 14% effective April 1, 2026 plus a temporary bill credit. For demand-metered C&I accounts (PG&E B19/B20), the per-kW demand charge set by PG&E remains the dominant cost driver; MCE generation affects only the per-kWh energy portion.
Marin Clean Energy (MCE) Rate Schedule List
| Schedule | Applicability |
|---|---|
| MCE Light Green | Default 60% renewable commercial generation. |
| MCE Deep Green | Optional 100% renewable commercial generation. |
| Large C&I (B19/B20) | Demand-metered commercial/industrial on PG&E delivery. |
Marin Clean Energy (MCE) Rate Features & TOU Details
- Only the generation line differs between MCE and PG&E; delivery is identical
- Light Green (60% renewable) is roughly cost-competitive with PG&E generation
- Deep Green (100% renewable) adds a modest premium (~$14/mo on the commercial example)
- MCE cut generation rates 14% effective April 1, 2026, plus a temporary bill credit
- PG&E demand charges (B19/B20) drive large C&I bills, not MCE generation
- Rates set by MCE's locally elected Board, not corporate shareholders
For a deeper analysis including cost optimization strategies and historical rate trends:
Read the full Marin Clean Energy (MCE) Rate Optimization Guide →Other Data Access Programs
MCE Peak Flex Market (Demand Response)
Compensates customers for reducing or shifting load during peak events. MCE uses customer-authorized PG&E 15-minute interval data to measure baseline, verify reductions, and calculate compensation (reported at $2.00/kWh for verified reductions during events).
- 01Confirm eligibility (any MCE customer able to shift at least 0.25 kW)
- 02Express interest at the Peak Flex Market page and provide account/load details
- 03Authorize MCE to access your PG&E meter data
- 04Reduce load during event windows (typically Jun-Oct, 4-9 p.m.) and receive compensation
MCE Distributed Energy Management System (DEMS)
MCE's platform for aggregating and optimizing distributed energy resources (batteries, solar, EV chargers, thermostats), expanded via a 2025 CEC grant. Integrates customer meter data for verification of flexibility.
- 01Watch for enrollment opportunities on the MCE website
- 02Contact MCE at 888-632-3674 for current availability
California MIDAS Rate Database
MCE publishes time-dependent rates and GHG factors to the CEC's MIDAS server under California's Load Management Standards. Rates are queryable via a free public API.
- 01Create a free MIDAS account
- 02Query MCE rate IDs via the REST API
- 03Retrieve TOU rates, effective dates, and GHG factors in XML/JSON
CPUC CEDARS Program Data
Aggregated MCE energy-efficiency and demand-response program data (participation, savings, GHG reductions) is published in the CPUC's CEDARS database. No individual customer data.
- 01Visit the CEDARS database and search Marin Clean Energy / MCE
- 02Download monthly confirmed reports and quarterly claims
- 03Export summary data to CSV
Limitations & Considerations
- ⚠MCE maintains no independent billing, metering, or customer-data portal; all customer data access is through PG&E systems.
- ⚠Green Button, Share My Data, EDI, and interval data are all PG&E programs, not MCE programs.
- ⚠MCE-specific data is limited to demand-response program performance and publicly aggregated MIDAS/CEDARS data.
- ⚠MCE provides electricity generation only; PG&E remains the delivery utility and issues the single combined bill.
- ⚠Billing questions about the combined bill must go to PG&E (1-800-743-5000), while generation/rate/program questions go to MCE.
- ⚠For aggregated third-party access, Nectar provides API access to MCE/PG&E billing and interval data — see docs.nectarclimate.com.
Marin Clean Energy (MCE) Data Access FAQ
How do MCE commercial customers access their billing and interval data?▾
Through PG&E, not MCE. PG&E issues a single combined bill that itemizes MCE generation separately from PG&E delivery. Access billing history (5+ years) in PG&E My Account, export 15-minute interval data via PG&E Green Button Download My Data, or authorize a third party through PG&E Share My Data.
Does MCE offer its own Green Button or data-sharing API?▾
No. MCE maintains no independent customer-data systems. Green Button Download, Share My Data (Connect My Data), and the EnergyInsights API are all PG&E programs. MCE's own data offerings are limited to demand-response program performance and publicly aggregated MIDAS (rates) and CEDARS (program) data.
How much do MCE commercial generation rates cost compared with PG&E?▾
Per MCE's rate comparison effective April 1, 2026 (typical small commercial B1 customer, 1,151 kWh/month): MCE Light Green generation is $141.44, MCE Deep Green is $155.82, and PG&E generation is $142.15, on a shared PG&E delivery charge of $349.09. MCE reduced generation rates 14% effective April 1, 2026. Detailed per-kWh figures by schedule are in MCE's Commercial Rate Table.
How does a business choose between MCE and PG&E generation?▾
Customers in MCE's territory are auto-enrolled in MCE Light Green (60% renewable) by default. They can opt up to Deep Green (100% renewable) or opt out to PG&E generation at any time, with no change to PG&E delivery, metering, or the single combined bill. Switch via the Compare Rates page or by calling 888-632-3674.
What drives commercial bills for large MCE/PG&E accounts?▾
For demand-metered C&I accounts on PG&E B19/B20, the per-kW demand charge set by PG&E is the dominant cost driver. MCE generation affects only the per-kWh energy portion. The biggest savings come from reducing coincident peak demand and shifting load out of the 4-9 p.m. TOU peak, using PG&E 15-minute interval data.
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