Guam Power Authority (GPA) Data Access Guide
Guam Power Authority is the government-owned electric utility serving all 53,777 customers on Guam, regulated by the Guam Public Utilities Commission. A $16M ARRA-funded smart grid project deployed 56,735 AMI meters territory-wide — daily kWh data is visible in MyEnergyGuam and 18 months of bills in PayGPA — but there is no Green Button, ESPI, EDI, or third-party API, so sub-hourly interval data requires manual requests to GPA.
How to Get Your Guam Power Authority (GPA) Data: All Access Methods
| Method | 1st Party | 3rd Party | Customer Types | Data Types | Latency | Format |
|---|---|---|---|---|---|---|
| PayGPA Portal | ✓ | — | Residential and business | Billing statements (18 months), payment history | Monthly | Web / PDF |
| MyEnergyGuam Portal | ✓ | — | Residential and business | Daily kWh, projected usage, alerts | Daily | Web (view-only) |
| Manual interval data request | ✓ | ✓ | Customers; third parties with written authorization | 15/30-minute AMI interval data | Manual, ~2-4 weeks (unconfirmed) | Negotiated (likely PDF/CSV) |
Billing Data Access
GPA provides billing access through PayGPA (web) and the Pay-GPWA mobile app: up to 18 months of statements, payment history, and per-period usage. Statements view as PDF; no CSV/XML export or API exists. Third parties use written authorization or power of attorney plus a manual request to customer service.
What Data Is on Your Guam Power Authority (GPA) Bill
- Current and past billing statements (up to 18 months)
- Payment history
- Usage details per billing period
- Account balance and due dates
- Paperless billing enrollment
How to Download Guam Power Authority (GPA) Bills (Business & Commercial)
- 01Sign into PayGPA for statements and payment history per account
- 02Use MyEnergyGuam for daily kWh tracking across metered accounts
- 03Email businessfirst@gpagwa.com or call (671) 647-5787 Option 1 for business data requests
- 04Request raw interval data or bulk historical exports through customer service with account details
How to Download Guam Power Authority (GPA) Bills (Residential)
- 01Navigate to https://paygpa.com/ and sign in with Account Number and Billing Zip Code
- 02Open Billing or Account History and select a date range
- 03View individual statements (PDF format) and save via browser tools
- 04Register at MyEnergyGuam with Account Number and Last Bill Amount for daily usage
- 05Set custom consumption alerts and use the rate calculator
Third-Party Access to Guam Power Authority (GPA) Billing Data
Manual written authorization / power of attorney
- 01Customer signs written consent or power of attorney naming the third party
- 02Third party sends the authorization and request (account number, date range, data types, format) to customersfirst@gpagwa.com (residential) or businessfirst@gpagwa.com (business), or mails to P.O. Box 21868, Barrigada, GU 96921
- 03GPA verifies the authorization and determines availability
- 04Data delivered case-by-case, typically via email or portal access; estimated 2-4 weeks (unconfirmed)
Want to understand the charges on your bill?
See the Guam Power Authority (GPA) Rate Schedules & Tariff Guide →Interval Data & Smart Meters
GPA's federally funded smart grid project installed 56,735 smart meters, real-time AMI communication systems, and distribution automation on 17 of 64 circuits. Customers see aggregated daily kWh in MyEnergyGuam (view-only). Sub-hourly 15/30-minute data exists in the AMI infrastructure but is not exposed through any portal — it requires a direct request to GPA, assessed case-by-case with no published SLA.
How to Download Guam Power Authority (GPA) Interval Data
- 01Log into https://www.myenergyguam.com/
- 02Open the Usage or Consumption section and select a date range
- 03View daily kWh consumption (no export — view-only)
- 04For raw 15/30-minute data, call (671) 647-5787 Option 3 or email customersfirst@gpagwa.com requesting 'smart meter interval data access'
Interval data is essential for rate comparison and TOU analysis.
See which Guam Power Authority (GPA) rate schedule is best for your usage pattern →Third-Party API Access
GPA offers no Share My Data portal, public API, developer program, or aggregator partnerships. Its CIS is SAP-based and under active modernization (RFP GPA-RFP-26-004), but third-party access today is a manual authorization-and-request process with case-by-case delivery. Nectar provides API access to this utility's billing and interval data — see docs.nectarclimate.com.
How to Register as a Guam Power Authority (GPA) API Vendor
- 01Obtain signed customer authorization or power of attorney
- 02Submit the request with account number, date range, data types, and preferred format to customersfirst@gpagwa.com or businessfirst@gpagwa.com
- 03GPA verifies authorization and negotiates delivery method case-by-case
- 04Plan repeat requests for refreshes — no recurring/automated delivery exists
EDI (Electronic Data Interchange)
No public EDI program is documented — no transaction set specifications (814/820/867), trading partner agreements, or VAN details. GPA runs an SAP-based CIS, so integration capability may exist; businesses should inquire via businessfirst@gpagwa.com or (671) 647-5787 Option 1.
How to Enroll in Guam Power Authority (GPA) EDI
- 01Email businessfirst@gpagwa.com requesting EDI capabilities and integration options
- 02Ask specifically about ANSI X12 814 (usage) and 820 (payment) support
- 03Request trading partner agreement, specifications, and VAN or direct-connection details
- 04Await GPA response on availability, onboarding timeline, and costs (likely 5-10 business days)
Rate Schedules & Tariff Analysis
GPA rate schedules are published on its rates page, with fuel costs flowing through the Levelized Energy Adjustment Clause (LEAC) reviewed by the GPUC. Net metering interconnection operates under an interim program policy.
Guam Power Authority (GPA) Rate Features & TOU Details
- GPUC-regulated rates for the whole territory
- LEAC fuel-cost adjustment mechanism
- Net Metering Interim Program for behind-the-meter solar
- Rate calculator available in the MyEnergyGuam portal
For a deeper analysis including cost optimization strategies and historical rate trends:
Read the full Guam Power Authority (GPA) Rate Optimization Guide →Other Data Access Programs
Net Metering Interim Program
Behind-the-meter solar customers interconnect under GPA's Net Metering Interim Program; generation and consumption data appear in the standard MyEnergyGuam and PayGPA portals (no specialized export).
Power Alerts (SMS Outage Notifications)
Free text-message outage notifications for the customer's service address.
- 01Text ENROLL to 1-855-252-9998 (toll-free)
My Energy Xpert (MEX)
Free AI-driven online home energy assessment for residential customers with PayGPA accounts, producing recommendations to lower bills.
Limitations & Considerations
- ⚠No Green Button, ESPI, or standardized data export despite territory-wide AMI
- ⚠Sub-hourly interval data requires manual requests with no published SLA
- ⚠No CSV/XML export from PayGPA or MyEnergyGuam — both are view-only
- ⚠No public API, developer portal, or aggregator partnerships
- ⚠No documented EDI program; capability must be confirmed by direct inquiry
- ⚠Third-party access is manual, case-by-case, with estimated 2-4 week turnaround
Guam Power Authority (GPA) Data Access FAQ
Can commercial customers get 15-minute interval data from GPA?▾
Technically yes — GPA's territory-wide AMI (56,735 smart meters from a $16M ARRA smart grid project) captures sub-hourly data — but it is not exposed through any portal. Request it directly at (671) 647-5787 Option 3 or customersfirst@gpagwa.com; GPA assesses requests case-by-case with no published SLA. MyEnergyGuam shows daily kWh only.
Does GPA support Green Button, ESPI, or a public API?▾
No. GPA is not in the Green Button Alliance Directory, does not implement ESPI/NAESB standards, and has no developer portal or documented API. Nectar provides API access to this utility's billing and interval data — see docs.nectarclimate.com — alongside GPA's portal access and manual request channels.
How much billing history is available, and in what format?▾
PayGPA provides up to 18 months of billing statements viewable as PDF, plus payment history and per-period usage. There is no CSV or XML export from PayGPA, MyEnergyGuam, or the Pay-GPWA mobile app — all are view-only.
How does a consultant access a client's GPA data?▾
Through manual authorization: the customer signs written consent or a power of attorney, and the consultant submits it with account number, date range, data types, and preferred format to customersfirst@gpagwa.com (residential) or businessfirst@gpagwa.com (business). GPA verifies and negotiates delivery case-by-case; expect roughly 2-4 weeks with no recurring delivery.
Does GPA offer EDI for large business accounts?▾
Not publicly documented. GPA runs an SAP-based CIS that may support integration, but no transaction set specs (814/820/867), trading partner agreements, or VAN details are published. Inquire through businessfirst@gpagwa.com or (671) 647-5787 Option 1; expect a 5-10 business day response.
Who sets GPA's rates and where are they published?▾
The Guam Public Utilities Commission (GPUC) regulates GPA under Guam Code Title 12, Chapter 8. Rate schedules are at guampowerauthority.com/rates, and fuel costs flow through the Levelized Energy Adjustment Clause (LEAC). There is no retail choice on Guam.
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