Worked example · 100 MWdc existing PV · Pecos, Texas
Phase 0 is 50 MW, Phase 1 is 58.5 MW, then 153.72 MW, then 175.04 MW on one fence.
Phase 1 is the cooling plant: fanless cassette rows, a buried pipe, and a 250 MWh cold storage tank, sized to reject 50.7 MWth. That is 50 MW of firm IT. Phase 2 stays on the grid, adds engines and the heat train, and reaches 153.72 MW. Phase 3 is full off-grid at 175.04 MW of firm IT.
- Phase 1 — cooling
- 50 MW AI
50 MW of firm IT. The plant rejects 50.7 MWth. The chiller is 8.45 MWe at COP 6 and runs on surplus PV.
- Phase 2 — grid + engines
- 153.7 MW AI
Grid plus engines. 153.72 MW. About 1.87 years versus Phase 1.
- Phase 3 — off the grid
- 175 MW AI
Full off-grid. 175.04 MW. Same fence. 2.22 years versus Phase 1.
Starting plant is 100 MWdc on the same land. Phase 1 reject is about 35 acres. Phase 2 shares about 76. Phase 3 shares about 94 and is full off-grid. Jacket water sets the later acres. No mirror acreage is drawn.
$150M / year — Phase 1 firm
50 MW of design-target 99.9% firm AI × $3M per MW-year planning value. A planning year, not a live meter.
About $370M / year
Phase 2 is 153.72 MW. About $369.6 million a year. About 1.87 years versus Phase 1.
175.04 MW — full off-grid
Phase 3 is full off-grid at 175.04 MW. About $405.2 million a year. 2.22 years versus Phase 1.
Phase 3 is full off-grid at 175.04 MW. About $405.2 million a year after operating cost. 2.22 years versus Phase 1. Same fence.
The three published days are 17 June, 22 June, and 6 December. The hall is 50 MW on each of them.