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Transformer Sizing and Cost
Load, voltage class and impedance to MVA, price band from the Bid-Tab Price Book and published lead time from the Monitor.
Method
Load, voltage class and impedance to MVA, price band from the Bid-Tab Price Book and published lead time from the Monitor.
Defaults come from the model named above. Every input is mirrored to the URL so a scenario can be shared as a link. Results are indicative; the model page states the sources and their dates.
Default assumptions come from the Public Bid-Tab Price Book. Pro subscribers can save inputs. Institutional seats get the underlying series.
Articles that use this calculator
What 50 MW Costs in 15 US Markets
A 50 MW connection requested in Northern Virginia in 2026 energizes in 2033 after $75 million of collateral and a 14 year contract, while the same 50 MW in Houston posts no rule-mandated security and can be live in 2028, per Open Factory's Large-Load Cost Table as of August 2026.
How to Write an RFQ for Capital Equipment in 2026
An equipment RFQ in 2026 has to settle escalators, LDs, milestones and tariff refunds: the City of Ocala agreed $8,070,340 for two 105 MVA autotransformers in August 2023 and approved $9,170,340 for the same units on April 28, 2026, a $1.1 million PPI escalator, per Open Factory's Bid-Tab Price Book.
The 2% Funnel: 474 GW Requested, 9 GW Approved, 5.8 GW Energized in ERCOT
Texas had about 474 GW of large-load interconnection requests as of August 2026, and ERCOT's March 26, 2026 status table shows 9.0 GW approved to energize and 5.8 GW energized, so about 2% has permission to draw power, as tracked in Open Factory's Large-Load Cost Table.
The $60 Million Deposit: How Equipment Slots Became Datacenter Currency
One slot for a 384 MW GE Vernova 7HA.02 turbine takes a $60 million reservation payment, 20% of a $300 million machine. GE Vernova ended June 2026 with 116 GW under contract, 63 GW as slot reservations, and $25.8 billion paid in advance, which Open Factory's MEP Cost Table carries.
Who Gets the IEEPA Refund
The IEEPA refund goes to the importer of record, not the buyer who paid a surcharge, and CBP puts the pool at about $166 billion across 53 million entries and 330,000 importers as of March 2026. Open Factory's Tariff Exposure Calculator flags the refundable lines on every 2025 entry.
Behind the Meter, In Front of the Queue: 90 GW Announced, 2 GW Running
Datacenter developers have announced about 90 GW of behind-the-meter generation across 59 US projects and about 2 GW of it runs, or 2.2%, while EIA's July 2026 inventory lists 68.1 GW of planned gas nationwide. Open Factory's Lead-Time Monitor forecasts what energizes by the end of 2028.
The 2 MW Plant Service Upgrade Nobody Budgets Right
A 400-person plant adding 2 MW of service pays $400k to $1.2M for the items the switchgear quote omits, and with the utility-owned pad-mount at 52 to 104 weeks the crane lands in week 74. Open Factory's Large-Load Cost Table shows the sequencing that pulls energization forward by 20 weeks.
The Used and Refurbished Market Nobody Indexes
Fifteen vendors bid $41,200 to $101,253 on one 2,500 kVA pad-mount transformer for Fayetteville's public utility in September 2025, a 2.5x spread at 10 to 35 week lead times, and a dealer shipping from stock lists it at $104,000, 1.77x the median bid, per Open Factory's Bid-Tab Price Book.
The OEM Disclosure Scorecard: Who Tells Buyers Anything
Open Factory's OEM Disclosure Scorecard version 0.1 finds that the eighteen largest electrical, power and cooling OEMs publish only 12 of 90 cells a buyer needs, with 16 Partials and 62 Noes: GE Vernova alone scores 2 of 5, ten score 1 and seven score 0, as of September 2026.
Why Your Switchgear Costs 50% More Than in 2021
The BLS producer price index for switchgear stood at 394.8 in July 2026, 78% above January 2021, and medium-voltage switchgear is up 50% since 2021 per Wood Mackenzie. Open Factory's decomposition finds inputs explain 36 of the 78 points and margin the other 43.
Transformer Lead Times Hit 143 Weeks: Who Gets Delivered First
A generator step-up transformer ordered in the United States was quoted at 143 weeks in the second quarter of 2025, a substation power transformer at 128 weeks and medium-voltage switchgear at 44, per Wood Mackenzie, against about 50 weeks in 2021, and Open Factory's Lead-Time Monitor lists both readings.
Quote Check: What Your Switchgear Quote Should Have Said
Open Factory's Quote Check tool places a switchgear quote against public awards: Riverside Public Utilities paid $2,254,387.50 for a 15 kV metal-clad lineup in May 2025, 52% above the $1,481,321 median of 12 public awards dated December 2016 to May 2025 in the Public Bid-Tab Price Book.
One Steel Mill Gates Every US Transformer
Every pound of domestic grain-oriented electrical steel in a US transformer core is melted at Cleveland-Cliffs Butler Works, a plant with a 920 mm maximum coil width, and the transformer PPI is up 91% since December 2019 at 381.8 in July 2026, per Open Factory's Lead-Time Monitor.
Tariff Bill of Materials: What Sections 232 and 301 Add to a UPS, a Lineup, a Genset and a Megapack
A 1 MW UPS assembled in the United States carries about 17 points of duty and the same UPS imported from China carries 55, under the tariff stack in force on October 10, 2025. The 50% copper tariff is 3.8 of those 17 points, per Open Factory's Tariff Exposure Calculator.
Introducing the Large-Load Cost Table: 15 Markets Side by Side
Open Factory's Large-Load Cost Table, version 0.1, compares a 50 MW connection across 15 US utilities on eight tariff cells each: 53 of the 120 cells come from primary documents, 20 from trade press, 2 from arithmetic, and 45 are not published anywhere, as of August 2026.
Introducing the Public Bid-Tab Price Book
Open Factory's Public Bid-Tab Price Book launches as version 0.1 with 2,712 public award lines and 51 price bands, and across 297 lines dated January 2024 to August 2026 the median three-phase pad-mount price runs from $153 per kVA at 75 to 167 kVA to $30 at 1,500 to 2,500.
The 171-Day Capex Lead Time: ISM's Most Ignored Table
The average US manufacturing buyer commits to capital equipment 171 days ahead of need in the August 2026 ISM report, with 27% committing more than a year out, against 147 days in December 2019. Open Factory's Lead-Time Monitor rebuilds the series back to 2007.
Book-to-Bill League Table, Q2 2026: Every Electrical OEM
Powell Industries posted a book-to-bill of 3.0 in the quarter to June 30 2026, booking $934 million of switchgear orders against $312 million shipped, and all eight electrical OEMs that print a ratio sit above 1.0, down to Eaton at 1.2, in Open Factory's Book-to-Bill League Table.
Introducing the Open Factory Lead-Time Monitor
Schneider Electric quotes low-voltage switchgear at 50 weeks from release to manufacturing in its September 2026 Lead Times Guide, and Open Factory's Lead-Time Monitor, launched as version 0.1, puts all eleven equipment classes in one table, of which only four have an OEM-published lead time.