HydroColocate

REGULATION & TECHNOLOGY

A credible project starts
with the approval path.

We connect the regulatory, commercial and engineering questions before a site advances. Each workstream produces evidence for a decision.

01Plant authority and permitted usesFERC / FEDERAL OWNER / PROJECT BOUNDARY

Establish which license, exemption or federal-owner authority governs the plant. Review the project boundary, authorized uses and operational obligations. Determine whether the facilities, power arrangement or cooling works need non-project-use approval, a license amendment or other consent.

02Electricity supply and grid obligationsUTILITY TARIFF / INTERCONNECTION / ISO–RTO

Establish the right to supply a new on-site load and continue surplus exports. Review interconnection agreements, metering, protection, standby service, transmission-service exposure and load studies. How the partner’s on-site load and the plant’s exports are metered and contracted, confirmed for each site. Existing grid access does not establish all rights needed for the proposed data center load.

03Closed-loop cooling and the riverTHERMAL EFFECTS / CLEAN WATER ACT / STATE WATER QUALITY

The proposed cooling design has no river-water intake or discharge: a sealed submerged heat exchanger transfers heat from a separate coolant loop to the river. Counsel and engineers must confirm treatment of thermal effects, fluid containment, water-quality obligations and the applicability of NPDES, Clean Water Act Section 316 and state requirements. The design does not establish a permit exemption.

04Environmental review and in-water structuresNEPA / ESA / NHPA / USACE / SECTION 401

Identify environmental review and consultation triggered by the proposed approvals and physical works. Screen submerged structures, anchoring and construction for Clean Water Act Section 404, Rivers and Harbors Act Section 10 and Section 401 certification, where applicable. Include fish habitat, navigation, sediment, historic resources and Tribal consultation.

05Dam safety and local developmentPART 12 / FLOOD / BUILDING / FIRE / LAND USE

Protect the dam’s operating envelope and maintenance access. Evaluate flood exposure, structural loads, electrical separation, fire protection, construction access and zoning. Review FERC Part 12 requirements where applicable and the authority having jurisdiction for modular data-center installations.

06Approval sequence and conditions to proceedPERMIT REGISTER / CRITICAL PATH / CONDITIONS PRECEDENT

Turn the findings into a responsibility matrix and approval schedule. Identify agency engagement, studies, contractual dependencies and conditions precedent for a term sheet, closing, construction and energization. Do not treat a proposed tariff date as approval.

07Acquisition, lease and contract consentsLICENSE TRANSFER / ASSIGNMENT / LENDER CONSENT

Review ownership or lease structure, title and property rights, any required license-transfer approval, existing power-contract assignment and change-of-control provisions. Establish lender and counterparty consents, easements, rights-of-way and any restrictions on the proposed use before committing to a transaction.

08State rules on supplying power to an on-site data centerSTATE LAW / PUBLIC UTILITY COMMISSION / RETAIL SALE

Determine how supplying electricity to a separately owned on-site data center is treated under the applicable state’s laws. Review public-utility status, retail-sale restrictions, service territory, exemptions and backup-service requirements with state-qualified counsel. Confirm the treatment of the actual entities, ownership boundaries, metering and site and power agreements.

09Financing eligibility and C-PACESTATE & LOCAL PROGRAM / ELIGIBLE SCOPE / CONSENTS

Where relevant, screen Commercial Property Assessed Clean Energy financing for the state and county or municipality, eligible improvements, property interest, program approval and mortgage-lender consent. Plant acquisition, land, AI servers and modular equipment must not be assumed to qualify.

THE ENGINEERING CONCEPT

Power on site.
Fluids kept separate.

River flow drives the turbines. Electricity feeds the facilities behind the meter; surplus continues through the existing grid connection.

The partner’s IT cooling circuit and CDU transfer heat at the agreed interface to HydroColocate’s separate sealed river loop and submerged heat exchanger. River water stays in the river.

THE PROPOSED SITE ARCHITECTURE

HydroelectricturbinesOn-site powerdistributionPartner-ownedfacilitiesExisting gridinterconnectionBEHIND THE METERSURPLUS POWERHeat-transfer interfacePartner connects hereRIVER FLOWRIVER / NO COOLING-WATER WITHDRAWALSubmerged closed-loop heat exchangerPARTNER IT LOOPHYDROCOLOCATE RIVER LOOP
Conceptual flow, not a construction drawing. The partner’s IT loop and CDU connect at the heat-transfer interface. HydroColocate provides the separate sealed river loop and submerged exchanger. The two fluids remain isolated. Proposed boundaries are confirmed for each site.

Power & resilience

Net dependable output, critical IT load, medium-voltage distribution, protection coordination, UPS and backup strategy. Evaluate N+1 or 2N only against a defined reliability requirement.

Closed-loop heat rejection

Thermal duty (MWth), coolant distribution unit (CDU) interfaces, approach temperature, pumping energy, containment, fouling, river temperature and low-flow limits.

Facilities & connectivity

Facility footprint, foundations and service access, rack density (kW/rack), flood design, fire protection, carrier availability, diverse routes, easements and rights-of-way.

Flow: cfs / L/sTemperature: °F / °CArea: ft² / m²Electrical capacity: MWHeat rejection: MWth
Measure performance at a defined boundary.

Power Usage Effectiveness (PUE) and Water Usage Effectiveness (WUE) require a stated system boundary and operating profile. No cooling-water withdrawal is a design objective, not a claim of zero total water use.

Questions we address early.

Where will the data center be located?
The facility layout and building design are established for each site. Location, flood exposure and separation from dam operations are assessed through engineering.
Is river water pumped through the cooling system?
No. The proposed two-loop design transfers heat through a sealed submerged exchanger, with the river outside the cooling circuit. Seasonal thermal capacity and permitting still require review.
Does HydroColocate rent rack space to third-party operators?
We provide powered, cooled data center sites. Partners install and operate their own equipment. We do not rent rack space.
Who owns and operates the data center?
The data center partner owns and operates its data center facilities, servers and IT equipment.
Does behind-the-meter supply avoid utility regulation?
That cannot be assumed. State counsel must review the ownership and supply structure, and the utility and regional tariffs must be evaluated for the actual connection.