Cooling tower, Kelly-Springfield Tire Plant, Cumberland, Maryland, HAER survey
Cooling tower, Kelly-Springfield Tire Plant, Cumberland, Maryland, HAER surveySource: commons.wikimedia.org

Dry Cooler or Cooling Tower: What the Water Bill Says in 15 Markets

Douglas County $24.80 per kgal6 million gallons per MW-yearGoogle's sitesHouston 3,339 wet-bulb hoursdry-cooler fan penaltyfour markets where hybrid paysthe 50 MW BoM

The lead. A thousand gallons delivered to a large meter in Douglas County, Georgia, costs $24.80 once it is sent back to the sewer. The authority's current chart splits that into $12.10 for the water in the top tier and $12.70 for the treatment. The same thousand gallons in Baton Rouge costs $1.51 from the water company and $7.17 from the parish sewer, $8.68 together. An open cooling tower rejecting 50 MW of heat needs about 300 million gallons a year, so with a sewer deduct meter in place the gap between those two sheets is $3.6 million a year for the same plant. The Open Factory Datacenter MEP Cost Table now holds the water and sewer tariff for every one of the 15 markets in the Large-Load Cost Table, and this piece is the first side-by-side.

The bars run from $24.80 in Douglas County and $23.96 in Santa Clara through $21.14 in Houston to $9.43 in Denver and $8.68 in Baton Rouge, and the sewer segment is the larger of the two in eleven of the fifteen rows. The piece covers the gallons a tower needs, the fifteen tariff sheets in one table, what Google, Microsoft and Meta disclose, the wet-bulb and dry-bulb hours that decide which machine works where, the fan penalty of going dry, the ten-year breakeven by market, why the water fights are about permits rather than bills, and, behind the wall, the 50 MW bill of materials three ways with the vendor shortlist.

Read the article
A five-cubicle 15 kV metal-clad lineup. The vermilion relay window marks the cubicle under test; breaker availability, not sheet metal, sets its lead time.

Lead-Time Monitor

Published lead times for eleven equipment classes compiled from OEM lead-time guides, Census M3 unfilled orders over shipments, ISM supplier deliveries and backlog disclosures in filings. Every cell carries its OEM and date.

50 weeksLV switchgear, Sep 2026

Monthly. Headline free. Compiling data

Book-to-Bill League Table

Quarterly orders, backlog and book-to-bill for every listed electrical, power and cooling OEM, from filings only, with the read-across for buyers: which classes are getting longer and which are clearing.

3.0 xPowell Industries book-to-bill, Aug 2026

Quarterly. Headline free. Compiling data

Datacenter MEP Cost Table

Capex per MW by component on the Turner & Townsend and JLL baselines, air-cooled and liquid-cooled, with each line's lead time from the Lead-Time Monitor and the carrying cost of delay.

$9.8M per MWall-in datacenter build cost, Mar 2026

Quarterly. Pro. Compiling data

Large-Load Cost Table

What a 50 MW connection costs and takes in 15 US markets: study fees, security per MW, minimum bills, contract terms, exit fees and realistic energization year, from tariffs and dockets.

2033realistic energization year for a new 50 MW load in Northern Virginia, Aug 2026

Updated as dockets move; reviewed monthly; energization years revisited each quarter. Table free. Compiling data

  • Copper and Wire Price Sheet

    Latest copper price to $/ft of metal by NEC conductor size, with an escalation-clause calculator for bids.

    Inputs: Copper and aluminum $/lb (defaults from FRED, overwrite with the COMEX settlement), Conductor size (#4 AWG to 600 kcmil copper, 4/0 to 900 kcmil aluminum) and run length, Escalation clause: line price at bid, index at bid and at PO, copper share or pounds, deadband. Defaults from the Public Bid-Tab Price Book.

    Open the calculator
  • Genset TCO

    Ten-year cost of a standby or prime generator set: diesel vs gas vs dual fuel, fuel, maintenance, permitting, Tier 4 aftertreatment, run hours.

    Inputs: Rating (kW), fuel (diesel, gas, dual) and Tier 4 Final toggle, Run hours per year and average load, Fuel price (diesel default from EIA via FRED; gas from your contract) and fuel use from the spec sheet. Defaults from the Public Bid-Tab Price Book.

    Open the calculator
  • Large-Load Interconnection Cost

    MW and market to study fees, security deposit, minimum-bill exposure and realistic energization year, from the Large-Load Cost Table.

    Inputs: Market (15 utilities across PJM, ERCOT, CAISO, MISO and the non-RTO Southeast and West), Requested MW, Your demand charge ($/kW-month) to dollarize the minimum bill. Defaults from the Large-Load Cost Table.

    Open the calculator

Subscribe