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How Much Transmission Does Concentration Need?

Dominion is spending $4.8 billion on a 3 GW HVDC line to serve data center load that's already committed. This tool lets you explore the tradeoff: how much transfer capacity eliminates reliability risk at each DC load level, and what does it cost?

DC Load (70/30 split) 5GW

Total data center load in PJM, with 70% landing in Dominion.

03571015
Transfer Capacity 6.6GW

Import capacity into Dominion zone. Current CETL: 6.6 GW.

36.69.6121520

Deterministic: 2024 demand profiles, 70/30 DOM share. Costs at $1.6B/GW (HVDC reference). Annual cost: 7.5% CRF (7% WACC, 40-yr). Spatial premium over PJM's 815 TWh baseline.

DOM Hours Unserved
374
at selected configuration
FAILURE
Additional Transfer
0.0
GW beyond current CETL
Capital Cost
$0.0B
at $1.6B / GW
Annualized Cost
$0.0B
per year (7.5% CRF)
Spatial Premium
$0.00
$/MWh over PJM baseline
Hours unserved vs. transfer capacity — 5 GW DC (70/30)