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Regulatory alert: The GS-5 data center rate class and the 2026 legislative pivot

Md Fahim Montasir

— 2 min read
Regulatory alert: The GS-5 data center rate class and the 2026 legislative pivot
Photo by Paul Hanaoka / Unsplash

The creation of the GS-5 Rate Class represents the most significant shift in Virginia utility regulation in decades. Originally approved by the SCC in late 2025 as part of Dominion’s biennial review, this new classification is specifically designed to isolate and "ring-fence" the costs of the data center industry’s explosive power demand.

As of February 11, the impact on data center contracts and cost recovery has shifted from a policy goal to an imminent financial reality.

I. What is the GS-5 rate class?

The GS-5 class applies to high-load customers with a demand of 25 MW or greater and a load factor of 75% or higher.

  • The 85/60 Rule: Starting January 1, 2027, GS-5 customers must pay for at least 85% of their contracted transmission and distribution (T&D) demand and 60% of their generation demand—regardless of how much electricity they actually use.
  • 14-Year Commitment: New large-load customers are now required to sign 14-year minimum contracts. This prevents stranded assets (factories or data centers closing early and leaving residential ratepayers to pay for the massive substations built to serve them).
  • Collateral Requirements: The SCC has authorized Dominion to demand increased financial collateral from GS-5 applicants to ensure infrastructure costs are covered even in cases of project cancellation.

II. Breaking: The "Lucas Amendment" (February 10)

In a surprise move February 10, Senator Louise Lucas introduced a legislative substitute to SB 253 that would accelerate these cost shifts even further than the SCC originally planned.

  • Immediate Rate Rebalancing: The bill proposes shifting a massive portion of capacity costs (the premium paid to ensure enough power exists for peak demand) directly onto the GS-5 class.
  • The Projected Impact: Data Centers expected to see their power bills jump by ~15.8%.
  • Residential Customers: Expected to see an immediate rate reduction of 3.4% (approx. $5.52/month).

"Fair Share" Substation Funding: The bill would also force data centers to pay 100% of the cost for their own electrical substations, ending the practice of socializing those capital expenditures across the general rate base.

III. Strategic impact on data center developers

Feature

The "Old" Way (Pre-2026)

The "GS-5" Way (Post-2026/27)

Transmission Cost

Socialized across all Virginia ratepayers.

85% Minimum Charge on contracted capacity.

Contract Length

Flexible / Shorter terms.

14-Year Mandatory Lock-in.

Substation CapEx

Partially subsidized by rate base.

Developer Pays 100% (if SB 253 passes).

Risk Profile

Low upfront financial risk for power.

High Collateral & "Take-or-Pay" liability.

The "Golden to Mars" Connection

This new rate class is the teeth behind the PUR-2025-00056 case. The SCC is using the Golden to Mars project as a test case to see if they can use GS-5 revenue to fund the expensive undergrounding that residents are demanding.

If the SCC rules that the Golden to Mars line must go underground, the GS-5 rate class will likely be the primary source of funding for that multi-billion dollar mitigation premium.

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