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This document provides technical requirements for High Impact Large Loads (HILLs) to meet voltage and frequency ride-through standards for interconnection to the SPP Transmission System, ensuring system stability during disturbances.
Year:
2025
Region / City:
N/A
Subject:
Voltage and frequency ride-through requirements for High Impact Large Loads (HILLs)
Document Type:
Technical Specification
Organization:
SPP Operations
Author:
Daniel Baker, Mostafa Sedighizadeh
Target Audience:
Industry stakeholders, Transmission Customers
Effective Period:
N/A
Approval Date:
2025-08-04
Revision Date:
2025-08-04
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The product description is provided for reference. Actual content and formatting may differ slightly.
Year:
2025
Region / City:
Southwest Power Pool (SPP)
Topic:
Transmission System Load Performance Requirements
Document Type:
Technical Specification
Agency/Institution:
SPP Operations & SPP Planning Policy & Research Team
Author:
SPP Operations & SPP Planning Policy & Research Team
Target Audience:
Energy professionals, power system engineers, technical stakeholders
Period of validity:
Ongoing, subject to updates
Approval Date:
08/15/2025
Revision Date:
07/24/2025
Purpose:
Binding requirements for interconnecting High Impact Large Loads (HILLs) to the SPP Transmission System
Applicability:
HILLs ≥10 MW (≤69 kV) or ≥50 MW (>69 kV)
Document Version:
0.1
Ride-through performance:
Voltage and frequency disturbance tolerance requirements for HILLs and associated resources
Control Methodology:
Power-electronic loads control strategies outlined
Evaluation and Compliance:
Compliance with technical standards for load behavior during voltage and frequency disturbances
Industry Alignment:
Aligns with ERCOT voltage ride-through requirements and NERC frequency standards
Terms and Acronyms:
Includes technical terms and acronyms used in power system operation
Context:
A technical specification outlining performance requirements for large electrical loads (HILLs) to ensure grid stability during voltage and frequency disturbances.
Reference number:
RFB 3024/2024
Document type:
Bid specification annexure
Procuring entity:
South African Police Service (SAPS)
Implementing agency:
State Information Technology Agency (SITA)
Country:
South Africa
Year:
2024
Subject matter:
Procurement of F5 load balancers and related services
Products covered:
F5 VELOS hardware, software, licenses and add-ons
Services included:
Maintenance, support and professional services
Service period:
Five years (60 months)
Scope of work:
Supply, design, installation, configuration and support of load balancing and application security solutions
Delivery locations:
SITA Centurion, SITA Beta, Pretoria
Evaluation framework:
Mandatory administrative, technical and contractual evaluation stages
Related annexes:
Annex A (Bidder substantiating evidence), Annex B (Addendum 1)
Year:
2020
Region / City:
Georgia
Subject:
Renewable energy procurement program
Document Type:
Regulatory Order
Agency / Organization:
Georgia Public Service Commission
Author:
Georgia Power
Target Audience:
Commercial and Industrial customers
Effective Period:
From 2020 onward
Approval Date:
January 23, 2020
Amendment Date:
N/A
Note:
Year
Subject:
Load Aggregation Point selection
Document type:
Instructional document
Organization / institution:
California Independent System Operator
Target audience:
Scheduling Coordinators, Load Serving Entities
Year:
2025
Region / City:
N/A
Subject:
Transmission system load assessment
Document Type:
Overview
Agency / Organization:
Southwest Power Pool, Inc.
Author:
N/A
Target Audience:
Transmission Customers, Transmission Owners
Period of validity:
N/A
Approval Date:
09/03/2025
Date of Amendments:
N/A
Year:
Not specified
Region / City:
Not specified
Topic:
Crane operation, safety protocols, risk assessment
Document Type:
Safety procedure
Organization / Institution:
MPC
Author:
Not specified
Target Audience:
Employees or contractors of MPC
Period of validity:
Not specified
Approval Date:
Not specified
Revision Date:
Not specified
Year:
2025
Region / City:
Southwest Power Pool (SPP)
Topic:
Transmission System Load Performance Requirements
Document Type:
Technical Specification
Agency/Institution:
SPP Operations & SPP Planning Policy & Research Team
Author:
SPP Operations & SPP Planning Policy & Research Team
Target Audience:
Energy professionals, power system engineers, technical stakeholders
Period of validity:
Ongoing, subject to updates
Approval Date:
08/15/2025
Revision Date:
07/24/2025
Purpose:
Binding requirements for interconnecting High Impact Large Loads (HILLs) to the SPP Transmission System
Applicability:
HILLs ≥10 MW (≤69 kV) or ≥50 MW (>69 kV)
Document Version:
0.1
Ride-through performance:
Voltage and frequency disturbance tolerance requirements for HILLs and associated resources
Control Methodology:
Power-electronic loads control strategies outlined
Evaluation and Compliance:
Compliance with technical standards for load behavior during voltage and frequency disturbances
Industry Alignment:
Aligns with ERCOT voltage ride-through requirements and NERC frequency standards
Terms and Acronyms:
Includes technical terms and acronyms used in power system operation
Context:
A technical specification outlining performance requirements for large electrical loads (HILLs) to ensure grid stability during voltage and frequency disturbances.
Document type:
Regulatory guidance
Subject area:
Stormwater management
Program:
Municipal Regional Permit
Provision:
C.10 Trash Load Reduction
Fiscal year:
2024–2025
Regulatory authority:
Regional Water Board
Permittees:
Population-based Permittees; Flood Management Agencies
Compliance benchmarks:
100% trash load reduction
Key topics:
Trash load reduction calculation; full trash capture systems; control measures; compliance status reporting
Applicable entities:
Municipal agencies and flood management agencies
Geographic scope:
Jurisdictional areas generating Very High, High, or Moderate trash levels
Source type:
Permit reporting guidance
Year:
2024
Region / City:
California
Topic:
Renewables Portfolio Standard (RPS), Renewable Energy Credits (REC)
Document Type:
Guidance
Organization / Institution:
California Energy Commission (CEC)
Author:
California Energy Commission (CEC)
Target Audience:
Load Serving Entities (LSEs), Retail Sellers, Publicly Owned Electric Utilities (POU)
Effective Period:
2024
Approval Date:
Not specified
Modification Date:
Not specified
Registered Entity:
Registered name of entity being audited
NCR Number:
NCRnnnnn
Compliance Enforcement Authority:
Region or NERC performing audit
Compliance Assessment Date(s):
Month DD, YYYY, to Month DD, YYYY
Compliance Monitoring Method:
[On-site Audit | Off-site Audit | Spot Check]
Names of Auditors:
Supplied by CEA
Applicability of Requirements:
BA, DP, GO, GOP, PA/PC, RC, RP, RSG, TO, TOP, TP, TSP
Requirements Covered:
D.B.1, D.B.2, D.B.3, D.B.4, R6, R7, R8, R9, R10, D.B.11, D.B.12
UFLS Entities Definition:
Distribution Providers, UFLS-Only Distribution Providers, Transmission Owners, and Transmission Owners that own Elements identified in the UFLS program
Supporting Evidence:
Compliance narratives, reports, memorandums, emails, and other documentation demonstrating compliance with PRC-006-5 requirements
Subject Matter Experts:
SME Name, Title, Organization, Requirement(s)
Compliance Assessment Approach:
Verification of joint regional review participation, island identification, and UFLS program adoption within Western Interconnection
Time Horizon:
Long-term Planning
VRF Level:
Medium
Year:
2019
Region / City:
N/A
Subject:
Committee Structure, Strategic Planning, Faculty Review
Document Type:
Report
Organization / Institution:
N/A
Author:
N/A
Target Audience:
Faculty Members
Effective Period:
N/A
Approval Date:
N/A
Date of Changes:
N/A
Note:
Year
Year:
2025
Region / city:
SPP
Topic:
Energy, Power Generation, Grid Interconnection
Document Type:
Report
Organization / Institution:
SPP
Author:
SPP
Target Audience:
Utility companies, energy producers, transmission operators
Effective Period:
2025-2026
Approval Date:
2025-10-24
Revision Date:
2025-11-25
Context:
A report outlining the High Impact Large Load Generator Assessment (HILLGA) process, its requirements, and its impact on the existing power grid interconnection procedures.
Year:
2025
Region / City:
California
Theme:
Energy, Forecasting, Grid Operations, Renewable Energy
Document Type:
Grant Funding Opportunity
Organization:
California Energy Commission
Author:
California Energy Commission
Target Audience:
Researchers, Utilities, Energy Market Participants, Policy Makers
Period of Validity:
October 2025 onwards
Approval Date:
October 2025
Date of Modifications:
N/A
Year:
2012
Region / city:
North America
Topic:
Energy management, Balancing Authority, Contingency Reserve
Document type:
Comment form
Organization / institution:
BARC SDT
Author:
N/A
Target audience:
Energy professionals, Balancing Authorities, Reserve Sharing Groups
Period of validity:
N/A
Approval date:
N/A
Amendment date:
N/A
Year:
2011
Region / Location:
Chile, NCSA
Document Type:
Commissioning Plan
Institution:
Large Synoptic Survey Telescope Project
Authors:
Chuck Claver, Christopher Stubbs
Target Audience:
LSST Project Staff, Scientific Community
Period Covered:
2-year commissioning phase
Last Release Date:
August 15, 2011
Change Log:
Versions 1.0–1.2 with updates to schedule, resources, and activity sequences
Related Documents:
LSST Science Requirements Document (LPM-17), LSST System Requirements (LSE-29), LSST Observatory System Specifications (LSE-30), LSST Telescope & Site Subsystem Requirement (LSE-60), LSST Camera Subsystem Requirements (LSE-59), LSST Data Management Subsystem Requirements (LSE-61), Telescope & Site Integration Plan (LTS-104), Camera Integration Plan (LCA-40), Data Management Integration Plan (TBD)
Acronyms Included:
BFP, CCS, DAC, ISR, FPA, LSR, M1M3, M2, SRD, RVC, OCS, OSS, ORR, TCS, WCS
Note:
Year
Subject:
Library Management
Document Type:
Job Description
Year:
Not provided
Region / City:
Not specified
Topic:
Research ethics, manuscript submission
Document type:
Template
Author:
Not specified
Target audience:
Authors submitting research articles
Period of validity:
Not provided
Approval date:
Not specified
Date of changes:
Not specified
Author:
Gregory Dubois-Felsmann
Organization:
Large Synoptic Survey Telescope (LSST) Project
Document identifier:
LSE-82
Related documents:
LSE-81; LPM-17; LSE-29; LSE-30; LDM-138; LDM-141
Document type:
Technical explanation report
Subject area:
Astronomy data management and survey science
Revision date:
August 15, 2011
Revision history:
Versions 1, 1.1, 1.2
Survey duration referenced:
10-year survey
Primary topics:
science estimates; camera specifications; survey cadence; data management sizing; storage and network requirements
Intended use context:
LSST data management and system design
Technical source type:
Project internal technical documentation