Utility Tariff Analysis · Updated September 2026

OG&E's Extra Large Power and Light (XLPL) Tariff: What It Means for AI Data Centre Siting in Oklahoma

Extra-large new load, addressed via a new dedicated rate class is addressed through OG&E's proposed Extra Large Power and Light (XLPL) Tariff, filed June 17, 2026, and, for AEP's Oklahoma subsidiary, new special terms and conditions in its existing Large Power and Light (Large Load Tariff) for new large-load customers.

OG&E's Extra Large Power and Light (XLPL) Tariff — AI data centre infrastructure

OG&E's Extra Large Power and Light (XLPL) Tariff

OK

Oklahoma Gas & Electric (OGE) / Public Service Company of Oklahoma (AEP)

PUD2026-000046; PUD2025-000075

Regulatory docket / filing reference

Extra-large new load, addressed via a new dedicated rate class

Who the tariff applies to

Extra-large new load, addressed via a new dedicated rate class is addressed through OG&E's proposed Extra Large Power and Light (XLPL) Tariff, filed June 17, 2026, and, for AEP's Oklahoma subsidiary, new special terms and conditions in its existing Large Power and Light (Large Load Tariff) for new large-load customers.

Also active in Oklahoma: OG&E is serving a $9 billion planned Google investment across data centre complexes in Muskogee and Payne Counties, ramping to roughly 1,000 MW by 2031 and 1,200 MW by 2036 — with OG&E estimating residential customer benefits of about $6.84/month once the load is fully ramped.

Named Projects Already Underway

CustomerLocationDetails
GoogleMuskogee and Payne Counties, OK$9 billion planned investment in data centre complexes, ramping to approximately 1,000 MW by 2031 and 1,200 MW by 2036

Figures compiled from the Edison Electric Institute's "Large Load Projects and Tariffs" (September 2026) member-company summary and public regulatory filings. Confirm current tariff terms directly with Oklahoma Gas & Electric (OGE) / Public Service Company of Oklahoma (AEP) and the relevant state public utility commission before relying on any figure for a capital decision.

Weighing Oklahoma against another state or a Canadian province with a different rate and interconnection picture entirely? Run both sides of the comparison through our licensed AI data centre cost configurator — it applies each jurisdiction's actual power rate, tax treatment and large-load tariff rules to the same seven build configurations.

Model This State on Your Own Site

Every figure above comes from the same power-cost and tariff dataset behind the SCR AI Build Configurator — a licensed, embeddable widget that models seven data centre build configurations against all nine Canadian provinces and all 50 US states plus DC, returning capital expenditure by line item, energy cost, revenue by commercial structure, EBITDA and payback.

LicencePrice (CAD)Who it suits
Standard$4,000 / domain / yearAdvisors who need three lease-model configurations and a clipboard summary
Pro$10,000 / domain / yearConsultants who send CSV deliverables to clients and want all seven configurations
EnterpriseFrom $25,000 / year, up to 3 domainsDevelopers and EPC firms who want the model on their own cost basis with attribution removed

Not ready for an annual licence? A one-time Site Screening Report ($950, one site) runs the same model for a single build without embedding anything.

Frequently Asked Questions

What is OG&E's Extra Large Power and Light (XLPL) Tariff?

Extra-large new load, addressed via a new dedicated rate class is addressed through OG&E's proposed Extra Large Power and Light (XLPL) Tariff, filed June 17, 2026, and, for AEP's Oklahoma subsidiary, new special terms and conditions in its existing Large Power and Light (Large Load Tariff) for new large-load customers.

Why did Oklahoma Gas & Electric (OGE) / Public Service Company of Oklahoma (AEP) introduce this large-load structure?

To ensure the cost of new generation, transmission and distribution infrastructure built to serve very large customers, chiefly hyperscale data centres, is paid for by those customers rather than spread across the general rate base of residential and small commercial ratepayers.

What large data centre projects are already active in Oklahoma?

OG&E is serving a $9 billion planned Google investment across data centre complexes in Muskogee and Payne Counties, ramping to roughly 1,000 MW by 2031 and 1,200 MW by 2036 — with OG&E estimating residential customer benefits of about $6.84/month once the load is fully ramped.

Does this tariff replace Oklahoma's standard commercial and industrial rates?

No. OG&E's Extra Large Power and Light (XLPL) Tariff sits above Oklahoma Gas & Electric (OGE) / Public Service Company of Oklahoma (AEP)'s standard commercial and industrial rate schedules and applies specifically to customers that meet or exceed the large-load threshold described above. Smaller commercial and industrial loads continue to be billed under existing rate schedules.

How can I model a Oklahoma data centre build against this tariff and other states?

The SCR AI Build Configurator applies Oklahoma's power cost, tax treatment and large-load tariff rules alongside all other US states and Canadian provinces, so a Oklahoma scenario can be compared line-by-line against any alternative site.