Utility Tariff Analysis · Updated September 2026

Delmarva Power's General Service – Large Load (GS-LL): What It Means for AI Data Centre Siting in Delaware

September 18, 2026 6 min read Strategic Crypto Reserve Data Centre Infrastructure

Any new large-load customer with 50 MW or more of measured demand would be served under a new General Service – Large Load class, filed in line with the commission's November 2025 order directing Delmarva to bring forward a dedicated large-load rate structure before major new demand connects to its system.

The Tariff Explained Model a DE Build
Delmarva Power's General Service – Large Load (GS-LL) — AI data centre infrastructure

Delmarva Power's General Service – Large Load (GS-LL)

DE

Delmarva Power & Light

25-0826

Regulatory docket / filing reference

Any new large-load customer with 50 MW or more of measured demand

Who the tariff applies to

Any new large-load customer with 50 MW or more of measured demand would be served under a new General Service – Large Load class, filed in line with the commission's November 2025 order directing Delmarva to bring forward a dedicated large-load rate structure before major new demand connects to its system.

Also active in Delaware: Delaware's filing places it among the wave of Mid-Atlantic utilities moving to ring-fence large-load cost recovery ahead of expected data centre growth along the I-95 corridor.

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 Delmarva Power & Light and the relevant state public utility commission before relying on any figure for a capital decision.

Weighing Delaware 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.

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Frequently Asked Questions

What is Delmarva Power's General Service – Large Load (GS-LL)?

Any new large-load customer with 50 MW or more of measured demand would be served under a new General Service – Large Load class, filed in line with the commission's November 2025 order directing Delmarva to bring forward a dedicated large-load rate structure before major new demand connects to its system.

Why did Delmarva Power & Light 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 Delaware?

Delaware's filing places it among the wave of Mid-Atlantic utilities moving to ring-fence large-load cost recovery ahead of expected data centre growth along the I-95 corridor.

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

No. Delmarva Power's General Service – Large Load (GS-LL) sits above Delmarva Power & Light'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 Delaware data centre build against this tariff and other states?

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