Public Service Company of Oklahoma (PSO) Data Access Guide

Public Service Company of Oklahoma (PSO) is an AEP electric subsidiary serving about 575,000 customers across eastern and southwestern Oklahoma. PSO offers a customer portal, mobile app, and Green Button (Download My Data) interval-data exports, with third-party access handled through AEP's formal Letter of Authorization process.

Oklahoma · Investor-Owned Utility·574,759 customers·Fully supported by Nectar·Last updated June 3, 2026

Rate Optimization Guide Automate with Nectar Visit Public Service Company of Oklahoma (PSO) →

How to Get Your Public Service Company of Oklahoma (PSO) Data: All Access Methods

Method	1st Party	3rd Party	Customer Types	Data Types	Latency	Format
Online Account Portal	✓	—	Residential & Business	Billing, monthly usage	Monthly	PDF, Web
Green Button (Download My Data)	✓	✓	Customers with smart meter	Interval + billing data	On-demand	XML (ESPI)
Customer Letter of Authorization	—	✓	C&I via consultant	Billing & usage (manual)	5-10 business days	As requested
Mobile App	✓	—	Residential & Business	Billing, usage	Real-time	Mobile
EDI (ANSI X12)	✓	—	B2B trading partners	Invoicing/payment (not consumption)	Automated	X12 4010

Billing Data Access

PSO provides online billing access through its customer portal and mobile app, with up to 13 months of billing history viewable and printable as PDF. Third-party access is provided through AEP's Customer Letter of Authorization process rather than an automated portal.

What Data Is on Your Public Service Company of Oklahoma (PSO) Bill

Current bill statement (PDF)
Up to 13 months of billing history
Detailed charge, tax, and fee breakdowns
Payment history
Monthly usage figures

How to Download Public Service Company of Oklahoma (PSO) Bills (Business & Commercial)

01Register or log in at https://www.psoklahoma.com/account/
02Use 'Bills & Payments' for current and historical statements
03For consultant access, complete the AEP Customer Letter of Authorization
04Submit it to inforelease@aep.com (or fax 1-800-281-3916)
05After processing (5-10 business days) the third party requests data via customer service at 1-888-216-3523

How to Download Public Service Company of Oklahoma (PSO) Bills (Residential)

01Visit https://www.psoklahoma.com/account/ and register with email, phone, and account number or service address
02Create a User ID and password and verify your email
03Log in and open 'Bills & Payments'
04Select 'View Your Bills' and filter by date (up to 13 months)
05Open any bill to view or print the PDF

Third-Party Access to Public Service Company of Oklahoma (PSO) Billing Data

AEP Customer Letter of Authorization

01Customer completes the authorization form specifying data scope and authorized representative
02Both parties sign and date the form
03Submit to inforelease@aep.com or mail to AEP Business Operations, 1 AEP Way, Hurricane, WV 25526
04After 5-10 business days, third party requests data via customer service at 1-888-216-3523

PDFWeb portal (HTML)Mobile app

Want to understand the charges on your bill?

See the Public Service Company of Oklahoma (PSO) Rate Schedules & Tariff Guide →

Sources

PSO Account Portal →Third-Party Authorization Form →

Interval Data & Smart Meters

PSO has deployed AMI/smart meters under AEP's gridSMART program. Interval consumption data is available to customers through the portal and as a machine-readable Green Button (ESPI XML) download.

Meter Technology

Digital AMI smart meters with remote reading (AEP gridSMART program).

Electric Granularity

Hourly meter reads standard; some locations support 15-minute or 30-minute intervals.

Gas Granularity

Not applicable (electric only).

How to Download Public Service Company of Oklahoma (PSO) Interval Data via Green Button

01Log in at https://www.psoklahoma.com/account/
02Navigate to 'Your Energy Usage' / 'Your Usage'
03Click the 'Green Button' / 'Download My Data' option
04Download the ESPI-standard XML file of interval and billing data
05Load the XML into compatible energy-analysis or solar-sizing tools

Interval data is essential for rate comparison and TOU analysis.

See which Public Service Company of Oklahoma (PSO) rate schedule is best for your usage pattern →

Sources

PSO Energy Usage / Green Button →Green Button Alliance →

Green Button Access

Download My Data

PSO offers Green Button Download My Data: an on-demand ESPI-standard XML export of interval consumption, meter, and billing data covering the past 12-13 months. Free and available anytime.

Formats: XML (ESPI)
Available To: All customers with an online account and a smart meter

Connect My Data

Green Button Connect My Data (CMD) / Share My Data for automated OAuth-based third-party access is not explicitly documented for PSO. AEP has committed to ESPI standards and CMD may be under development; verify directly with PSO.

API Standard: NAESB ESPI (Green Button)
Available To: Not confirmed for PSO

Sources

PSO Green Button →AEP Green Button Initiative →

Third-Party API Access

PSO does not publish a public developer API or a live Connect My Data endpoint for customer consumption data. Third parties obtain data from the utility either via a customer Green Button XML download or through AEP's manual Customer Letter of Authorization process. Nectar provides API access to this utility's billing and interval data — see docs.nectarclimate.com.

Program

Customer Letter of Authorization (manual); Green Button CMD potential/future

Auth Method

Customer Letter of Authorization, or customer-shared Green Button XML. OAuth-based CMD not confirmed.

Rate Limits

Not published (no public API).

Interval Latency

On-demand Green Button download (hourly data); manual fulfillment for authorized third parties.

How to Register as a Public Service Company of Oklahoma (PSO) API Vendor

01Obtain a completed Customer Letter of Authorization specifying interval/usage data scope
02Submit to inforelease@aep.com
03After processing, request Green Button XML or usage reports via PSO customer service
04Alternatively, customer downloads Green Button XML and shares it directly

Sources

PSO B2B Services →Nectar API Documentation →

EDI (Electronic Data Interchange)

Supported Public Service Company of Oklahoma (PSO) EDI Transaction Sets

Code	Name	Purpose
810	Invoice	Inbound invoicing to AEP Accounts Payable (also used for billing/usage).
820	Payment Order / Remittance Advice	Payment remittance to/from AEP.
850	Purchase Order	Procurement purchase orders from AEP to suppliers.
860	PO Change	Purchase order changes.
864	Text Message	Communications/explanations.
997	Functional Acknowledgement	Acknowledges receipt of EDI transactions.

How to Enroll in Public Service Company of Oklahoma (PSO) EDI

01Download the appropriate Trading Partner Questionnaire from aep.com/b2b/edi
02Complete company, technical, and transaction-set details
03Select VAN (AT&T Easylink) or direct connection
04Submit to AEP Business Operations / EDI Team
05Complete EDI testing/certification (typically 2-4 weeks), then move to production (4-8 weeks total)

Sources

AEP B2B / EDI →AEP EDI Information →

Rate Schedules & Tariff Analysis

PSO C&I bills are demand-driven for larger schedules (PL and LPL), where kW charges dominate, while energy (kWh) rates fall sharply as service moves to primary/transmission voltage. Managing peak demand during the June-September on-peak window (2-9 p.m. weekdays) is the primary cost lever. Figures reflect the tariff effective January 30, 2025.

Public Service Company of Oklahoma (PSO) Rate Schedule List

Schedule	Applicability
General Service Secondary (GS)	General commercial / small industrial.
Power and Light Secondary (PL)	Larger demand-metered commercial/industrial.
Large Power and Light (LPL)	Large industrial primary/transmission.
Limited Usage General Service (LUGS)	Small, low-usage secondary commercial.

Public Service Company of Oklahoma (PSO) Rate Features & TOU Details

Demand (kW) charges dominate PL and LPL bills
LPL energy rates are very low ($0.0017-$0.0031/kWh) at transmission/primary voltage
On-peak demand window: 2-9 p.m. weekdays, June 1-September 30
LPL peak demand uses a 90% ratchet of the prior 11 months' on-peak demand
Fuel, tax, and metering rider adjustments apply to all schedules

For a deeper analysis including cost optimization strategies and historical rate trends:

Read the full Public Service Company of Oklahoma (PSO) Rate Optimization Guide →

Sources

Large Commercial & Industrial Tariff (LPL) →Commercial & Small Industrial Tariff (GS/PL/LUGS) →

Other Data Access Programs

Green Button Download My Data

Standardized, free, on-demand ESPI XML download of a customer's interval consumption and billing data for the past 12-13 months, compatible with third-party energy and solar tools.

01Log in to the PSO account portal
02Open 'Your Energy Usage'
03Click 'Green Button' / 'Download My Data'
04Use the XML with compatible applications

Sources

Learn more about Green Button Download My Data →

AEP EDI Trading Partner Program

ANSI X12 4010 EDI for business-to-business invoicing, payment, and procurement transactions with AEP (not the primary path for customer consumption data).

01Download the Trading Partner Questionnaire from aep.com/b2b/edi
02Select VAN or direct connection
03Complete testing/certification
04Move to production

Sources

Learn more about AEP EDI Trading Partner Program →

Limitations & Considerations

⚠No public developer API from the utility for customer consumption data; programmatic access is available through Nectar (docs.nectarclimate.com).
⚠Green Button Connect My Data (automated OAuth) not confirmed for PSO.
⚠Third-party access through the utility is manual via Letter of Authorization (5-10 business days; no online delegation portal).
⚠EDI is for B2B invoicing/payment, not customer consumption data.
⚠Billing history limited to ~13 months.

Public Service Company of Oklahoma (PSO) Data Access FAQ

Does PSO support Green Button for C&I interval data?▾

Yes. PSO offers Green Button Download My Data, a free on-demand ESPI XML export of interval consumption and billing data for the past 12-13 months. Connect My Data (automated OAuth) is not confirmed for PSO.

How does a consultant or aggregator get authorized access to our data?▾

Through AEP's Customer Letter of Authorization. The customer completes the form specifying scope, both parties sign, and it is submitted to inforelease@aep.com. After 5-10 business days the third party requests data via customer service; there is no automated third-party portal.

What commercial and industrial rate schedules does PSO offer?▾

C&I customers are served under General Service Secondary (GS), Power and Light Secondary (PL), Large Power and Light (LPL) for primary/transmission loads, plus time-of-day variants (GSTOD, PLTOD), Limited Usage General Service (LUGS), and Primary Service Nondemand (PND). See the PSO tariff book for current charges.

What is PSO's on-peak period for demand and TOU charges?▾

For Large Power and Light service, the on-peak period is 2:00 p.m. to 9:00 p.m. local time, Monday through Friday, June 1 through September 30 (excluding Juneteenth, Independence Day, and Labor Day).

Is interval data available at 15-minute granularity?▾

Hourly reads are standard via AMI, and some locations support 15- or 30-minute intervals. Large Power and Light demand is based on 30-minute integrated periods. Available granularity should be confirmed for a specific meter.

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