Micron memory fab (Micron FAB), Boise

• the cleanroom space will reach 600,000 square feet Micron Technology, Inc. · Press release: Micron Breaks Ground on Leading-Edge Manufacturing Fab in Boise, Idaho · paragraph 2· cleanroom area as announced, not building footprint
  600,000 sq ft2022-09-12Source ↗
• historic $15 billion investment through the end of the decade in Boiserestated later Micron Technology, Inc. · Press release: Micron Breaks Ground on Leading-Edge Manufacturing Fab in Boise, Idaho · dateline BOISE, Idaho, Sept. 12, 2022; paragraphs 1-3· announced investment, nominal dollars
  15,000,000,000 USD2022-09-12Source ↗
• In 2022, Micron announced plans to construct a $15 billion leading-edge memory manufacturing facility in Boise Idaho Power · 2025 Integrated Resource Plan, Appendix A: Sales and Load Forecast (June 2025) · page 25, Micron Idaho Semiconductor Manufacturing· the utility restating the announced investment; the same figure, not an addition
  15,000,000,000 USD2025-06-01Source ↗
• an additional $30 billion beyond prior plans which includes building a second leading-edge memory fab in Boise, Idaho, and expanding and modernizing its existing manufacturing facility in Manassas, Virginia Micron Technology, Inc. · Press release: Micron and Trump Administration Announce Expanded U.S. Investments · dateline BOISE, Idaho, June 12, 2025 no source
  No public figure2025-06-12Source ↗

• Micron anticipates an annual peak demand at steady state of approximately 507 MW, beginning in 2031 Idaho Power · docket IPC-E-24-44 · Application for approval of special contract and tariff Schedule 28 · paragraph 11 (Contract Demand)· anticipated annual peak demand at steady state, the basis of the Embedded Contract Demand; the expansion period's Scheduled Ramp Contract Demand is Exhibit 3 (see facility note)
  507 MW2031Source ↗

• Minimum Monthly Billing Demand will automatically reduce by 30 MW on June 1 of each year down to a minimum of 20 MW Idaho Power · docket IPC-E-24-44 · Micron FAB Special Contract section 5.5; Order 37039 · section 5.5(a)-(b); Order 37039 ordering paragraphs (Billing Demand charge $20.25 per kW, Contract Demand charge $3.12 per kW, initial Energy Charge $0.04084 per kWh)· the floor after expansion: on the Embedded Contract Demand's effective date the Minimum Monthly Billing Demand falls 30 MW from the then-effective amount, then 30 MW each June 1 to 20 MW; during expansion it equals the Scheduled Ramp Contract Demand in Exhibit 3
  20 MW2026-05-08Source ↗

• Micron is paying Idaho Power to construct the necessary Interconnection Facilities to accommodate the Scheduled Ramp Contract Demand for the Micron FAB up to 416,200 kW Idaho Power · docket IPC-E-24-44 · Micron FAB Special Contract (Application Attachment 1) · section 6.1 Additional Facilities· interconnection facilities under the Construction Agreement of 2023-05-16 and the Amended and Restated Procurement Agreement of 2023-02-01; the ESA says these may not be sufficient to supply the maximum Contract Demand of 507 MW
  416,200 kW2024-11-21Source ↗
• the maximum Contract Demand of 507 MW Idaho Power · docket IPC-E-24-44 · Micron FAB Special Contract (Application Attachment 1) · section 6.1; section 1.6 (Contract Demand definition quoted in Order 37039 footnote 1)· maximum Contract Demand the ESA names; the same 507 MW as the anticipated steady-state peak, in its contractual role, and never added to it
  507 MW2024-11-21Source ↗

• Individual energy and peak-demand forecasts are developed for ESA customers, including Micron Idaho Semiconductor Manufacturing; only the additional-firm-load class total is published Idaho Power · 2025 Integrated Resource Plan, Appendix A: Sales and Load Forecast (June 2025) · page 23 (Additional Firm Load), Table 8 page 24, Appendix A1 page 44 not published: held by Idaho Power: customer-level forecast inside the 2025 IRP, published only as the additional-firm-load class (258 aMW in 2026 rising to 1,065 aMW in 2035) with Brisbie, INL, Lamb Weston, Micron Technology, Simplot and others
  No public figure2025-06-01Source ↗

• Service under Schedule 28 begins the earlier of the first month the aggregate power requirement at the Micron FAB exceeds 20,000 kW or 2026-06-01; metered use is billed by Idaho Power and not published Idaho Power · docket IPC-E-24-44 · Micron FAB Special Contract section 2.1(a); Order 37039 · section 2.1(a) not published: held by Idaho Power (Schedule 28 billing) and Micron Idaho Semiconductor Manufacturing (Triton) LLC; no public filing carries metered kWh or the commencement of service
  No public figure2026-05-08Source ↗

• Forecast attributed to this facilityIndividual energy and peak-demand forecasts are developed for ESA customers, including Micron Idaho Semiconductor Manufacturing; only the additional-firm-load class total is publishedHeld by Idaho Power: customer-level forecast inside the 2025 IRP, published only as the additional-firm-load class (258 aMW in 2026 rising to 1,065 aMW in 2035) with Brisbie, INL, Lamb Weston, Micron Technology, Simplot and others.
  not published2025-06-01· Source ↗
• Announcedan additional $30 billion beyond prior plans which includes building a second leading-edge memory fab in Boise, Idaho, and expanding and modernizing its existing manufacturing facility in Manassas, Virginia
  no source2025-06-12· Source ↗
• Measured useService under Schedule 28 begins the earlier of the first month the aggregate power requirement at the Micron FAB exceeds 20,000 kW or 2026-06-01; metered use is billed by Idaho Power and not publishedHeld by Idaho Power (Schedule 28 billing) and Micron Idaho Semiconductor Manufacturing (Triton) LLC; no public filing carries metered kWh or the commencement of service.
  not published2026-05-08· Source ↗

Never add these figures to each other, to a utility forecast that already includes the facility, or across facilities. The utility on a dossier is the one a filing or contract names. Proximity to a substation, a service-territory polygon or a balancing authority never establishes who serves a facility.

• A superseded announcement restates the earlier one: the chain is one figure, not several.
• A service request, a minimum billing demand, a contracted capacity and a metered use describe one facility in different roles; the same MW can appear in more than one.
• A utility's class forecast (Idaho Power's additional firm load, PGE's data-center load) already contains its named customers: adding a named figure counts it twice.
• MW, MWa, MWh and square feet are different quantities; dollars are not load.

Curation and sources