Data Center Practice Column
Find out what documents you need to prepare and what tasks you need to delegate—from applying for electricity service through evaluation, contracting, and power connection. You can also search our existing technical and operational articles.
Series on the Practical Process of Applying for Electricity Service
8PageApplying for Data Center Electricity: Start by Organizing the Site and Power Requirements
This is a method for distinguishing between IT load and power supply capacity, and for communicating the initial and final capacities along with the date of use to the design firm.
Required Documents · Application Process · Vendor Roles →02 · Notice of ScheduleWhat is the difference between a notice of intended electricity use and a formal application for electricity service?
This document outlines, in chronological order, the process of receiving a notice of intended power supply, submitting supplementary information, receiving a response regarding supply review, and determining whether the project is subject to a power system impact assessment.
Required Documents · Application Process · Vendor Roles →03 · Technical ReviewKEPCO Technical Review Application: From Submission of Documents to Response on Grid Review
This document outlines the actual submission process for KEPCO’s technical review for the Grid Impact Assessment, the breakdown of costs, and the role of the design firm.
Required Documents · Application Process · Vendor Roles →04 · Power System Impact AssessmentPower System Impact Assessment: What Is Submitted to and Reviewed by the Ministry of Climate
This is the process of submitting an evaluation report—which includes evidence of business viability, financial viability, and efficiency improvements, in addition to KEPCO’s response—and incorporating the review conditions into the design.
Required Documents · Application Process · Vendor Roles →05 · Energy ConsultationConsultation on the Power System Impact Assessment and the Energy Usage Plan: Why They Are Not the Same Process
This is a method of preparing annual energy demand, supply, and efficiency plans separately from the grid review and incorporating them into the design.
Required Documents · Application Process · Vendor Roles →06 · Application and ContractOfficial Electricity Service Application and KEPCO Contract: Account Holder, Supply Terms, and Facility Surcharge
This section explains the actual process for submitting a new application, as well as the supply start date, the scope of the service connection work, and cost responsibility that should be verified before signing a contract.
Required Documents · Application Process · Vendor Roles →07 · Construction and Power ConnectionThe final stage, from electrical construction through the pre-operation inspection to the actual power connection
Distinguish between electrical design, construction, and supervision; inspections by the Korea Electrical Safety Corporation; and the commencement of power supply by KEPCO, and prepare the completion documentation.
Required Documents · Application Process · Vendor Roles →Company and Contract OperationsWhich provider and which contract should I choose before applying for electricity service?
This document compares the tasks, deliverables, and contract timelines for electrical design, power system evaluation, energy consultations, electrical construction, supervision, and development project management.
Required Documents · Application Process · Vendor Roles →Technology & Operations Column
9PageIs it okay to shut down a server just because its CPU usage is low?
This is an operational checklist used to distinguish between server utilization and non-utilization, and to verify the responsible personnel, observation period, scheduled tasks, and dependent services.
Read the column →TECHNICAL GUIDEValues to record when comparing server power profiles
This guide explains how to record power, throughput, response time, and recovery conditions—not just by comparing the names of power settings—but by aligning equipment, workloads, and test periods.
Read the column →TECHNICAL GUIDEWhat’s the difference between a 40 MW data center and a 32 MW IT load?
Using the official announcement of the Pohang AI Data Center as an example, we distinguish between power capacity and IT load. We provide a comparison table that categorizes design values, actual operational measurements, and unverified items.
Read the column →TECHNICAL GUIDEData Center PC Construction Methods and Schedule: How to Distinguish Between Planning and Completion
This document summarizes the scope of application, prerequisites, and criteria for completion to be verified when reviewing the concept of precast concrete and the data center construction schedule.
Read the column →TECHNICAL GUIDEUnderstanding Data Center WUE: Compare Water Usage and Measurement Scopes Together
This is a comparison table that verifies the units, time periods, and measurement ranges of WUE, which indicates the relationship between on-site water usage and IT energy consumption. It does not imply actual measurements at a specific center or water supply availability.
Read the column →TECHNICAL GUIDEWhen the air in front of and behind the servers mixes: hot aisles, cold aisles, and empty rack space
This is a practical checklist for distinguishing between airflow in hot aisles and cold aisles and empty rack space, and for recording observations, estimates, and measured values separately.
Read the column →TECHNICAL GUIDEDoes “free cooling” mean it doesn’t use electricity? Guidelines for interpreting outdoor air cooling
This guide explains how to understand air-side economizers and verify outdoor air conditions, temperature and humidity, filters, and operating modes. It does not guarantee zero power consumption or specific energy savings.
Read the column →TECHNICAL GUIDEUPS Efficiency Table: Read by load range, not by a single rated value
UPS efficiency may vary depending on the load level. Ensure that the comparison sequence includes the same load point, measurement conditions, and expected operating load.
Read the column →TECHNICAL GUIDEReason for including the load factor along with capacity in the UPS redundancy comparison table
Even with the same N+1 configuration, the load factor varies depending on device capacity and the number of units in operation. Compare the load factors for the normal, failure, and expansion phases in the same table.
Read the column →Where should we start with our project site?
We will determine the necessary tasks and the scope of vendors based on the address, desired power capacity, intended usage period, and the response received from KEPCO.
Request for Review of Power Supply and Permits for the Project Site