Critical Infrastructure
Reliability and risk questions for facilities where interruption has high consequence.
Independent Power-System Reliability & Large-Load Advisory
Reliability Decisions for Power Systems and Data Centers
General Reliability helps utilities, developers, data-center stakeholders, and engineering firms evaluate capacity claims, system configurations, load behavior, outage consequences, and planning-study results—combining deterministic engineering with probabilistic reliability and vendor-neutral automation.
Independent assessment for utilities, transmission planning, emerging large loads, and data centers—working directly or alongside consultants, software providers, and specialist partners. GR does not grant interconnection approval, certify compliance, or replace the utility, RTO/ISO, or engineer of record.
Decades of power-system reliability experience · SUBREL/TRANSREL/DISREL foundations · InfraRel under development · Independent and partner-compatible
What we do
How We Can Help
Start with your reliability, planning, or large-load decision. We can help with consulting, probabilistic assessment, independent review, study automation, GR tools, training, and collaboration with specialists where the problem requires it.
Consulting & Engineering
Capacity and flexibility assessment, architecture screening, POI load behavior, outage consequence framing, probabilistic reliability, and independent study review.
Explore named engagements →Study Automation
Repeatable power-system study workflows with client-selected tools, documented assumptions, and human review—not office chatbots or autonomous grid control.
Study automation →Software & Analytical Tools
GR-developed reliability tools (SUBREL, TRANSREL, DISREL; InfraRel under development) and other platforms selected to fit the problem.
See tools →Training, Seminars & Mentoring
Utility and industry training on probabilistic reliability, study interpretation, modeling assumptions, and practical automation.
Open training →Research & Collaboration
Emerging reliability problems, data centers, probabilistic methods, and academic or industry collaboration.
Open Knowledge & Insights →AI Reliability & Workflow Automation
Separate from grid study automation: AI reliability/trust screening and general office/document workflow automation upon request.
AI & workflow services →The method follows the problem — not the other way around.
Large loads & data centers: Can a data center make a dependable operating commitment to the grid? · Grid Capacity & Flexibility Assurance Framework (under development; scoped assessments and pilots available).
Where we work
Industries & Systems We Work With
GR’s principal practice is independent power-system reliability for utilities, transmission planning, emerging large loads, and data centers—with probabilistic analysis, study automation, and independent review. Additional Services & Capabilities remain available without dominating the homepage.
Utilities & Power Systems
Transmission, substations, distribution, outage data and probabilistic planning.
Utilities detail →Data Centers & Large Loads
Grid commitment screening, MW/Mvar/duration/ramp assessment and facility–grid reliability at the interface.
Data-center overview →Engineering & Consulting Organizations
Independent review, study integration and methodology collaboration.
Collaboration →Industrial Facilities
Large electrical loads, supply reliability and planning alternatives.
Technology & Software Organizations
Reliability methods, test cases, validation and study-platform workflows.
Software & methods →Education & Research
Seminars, mentoring and supervised academic research collaboration.
Academic collaboration →Knowledge hub
Knowledge & Insights
Technical papers, reliability methodology, industry developments and learning — without leading with a software catalog.
Technical Papers & Research
Technical papers, research notes and ongoing reliability work.
Open papers & research →Reliability Knowledge
Methods, concepts, systems perspectives and decision-support practice across industries.
Open reliability knowledge →Industry Developments
NERC, FERC, EPRI and other consequential reliability developments.
Open industry developments →Commentary & Learning
Perspectives, seminars, training and emerging engineering topics.
Open commentary & learning →Methods & platforms
Tools We Use & Develop
GR selects analytical tools and methods to fit the problem. Customers are not required to adopt GR-developed software.
GR-Developed Tools
- SUBREL — substation reliability
- DISREL — distribution reliability
- TRANSREL — transmission reliability
- SUBREL Studio — workspace under development
- InfraRel — emerging infrastructure reliability platform
- Automation and data-center analytical methods under development
Engineering Platforms & Methods
Where a problem requires complementary commercial or industry platforms, GR works with methods and tools suited to the study — including client planning engines and specialist applications. No single platform is assumed to fit every engagement.
Emerging platform
InfraRel Reliability Analysis Platform
An emerging extension of the SUBREL reliability foundation for evaluating interconnected power, cooling, communications, controls and critical-load infrastructure. Compare configurations, identify dependencies and connect component failures to service interruption and outage cost.
Under active development Explore InfraRel →
Complementary expertise
Collaborating Specialists & Partners
GR works with qualified specialists and engineering organizations when a project requires complementary expertise — for example transient stability, EMT / harmonics, protection coordination, detailed facility-side engineering, specialist modeling, or sealed/stamped design where required.
V&R Energy
V&R Energy is an identified collaborator for selected power-system studies and complementary technical support—not GR’s exclusive platform, not a dependency for every study, and not a substitute for independent review.
How collaboration works
Roles, intellectual property, software access and responsibilities are defined separately for each engagement. No named software partnership or production connector is implied beyond the wording above.
Background
Selected Experience
Organizations supported through our work include utilities and engineering assignments reflected in published materials and prior professional experience. These references are not current endorsements, partnerships or statements of active contract.
Utilities & planning
Outage-event analysis, probabilistic planning and substation detail — including published examples associated with Idaho Power, BPA and Transend Networks.
Reliability software & training
Decades of reliability program development, seminars and mentoring for power-industry engineers.
Emerging large loads
Scoped assessments and methodology development at the grid–data center interface.
Engineering practice
Engineering Judgment Matters
Running software is only one part of an engineering study. The greater value lies in defining the right question, validating the data and models, selecting an appropriate analytical method, interpreting the results, and using them to support a technically sound decision.
Reliability should not be assumed. It should be defined, assessed, and designed into the system.
Differentiation
Why GR
Systems Perspective
From components and failure modes to complete interconnected systems.
Engineering Experience + Modern Technology
Established reliability engineering combined with modern automation, data tools and AI.
Independent Problem Solving
Methods and tools selected to suit the problem rather than forcing a predetermined solution.
Human Engineering Judgment
Automation and AI support accountable engineering decisions rather than replacing technical responsibility.
Practical workflow
Our Engineering Philosophy
GR does not start with a program or a predefined study. We start with the decision that needs to be made, then work backward to determine what information, modeling, analysis, and engineering judgment are required.
- Define the Objective
- Validate Data & Models
- Select the Method
- Verify the Analysis
- Interpret Results
- Communicate Clearly
- Support the Decision
- Analysis should begin with the decision or objective, not with a preferred software package alone.
- Models contain assumptions and limitations; the appropriate level of modeling depends on the problem.
- A successful program run does not by itself establish that a result is correct or useful.
- Results must be interpreted in context — assumptions, uncertainty, system behavior, and consequences.
- Communication should fit engineers, managers, regulators, developers, operators, and other stakeholders.
Next step
Start With Your Problem
You can come to GR with a clearly specified technical requirement or simply with a problem or goal. Tell us what you are trying to accomplish, what is getting in the way, or what risk concerns you. We will review the situation with you and discuss whether and how GR can help.
Technical depth retained
Detailed programs, case studies and resources
Existing technical content remains available below for visitors who want software detail, published case studies, downloads and FAQ.
Software — power & infrastructure reliability
Reliability programs developed for real planning work
Within the broader workflow-reliability mission, these proven programs support planning engineers. They help evaluate base cases, create options, run studies, compare results, and prepare reliability-based recommendations — with human engineering oversight throughout. GR software can be used alongside solver-independent outage-data, probabilistic-methodology and study-integration work described on the Utilities & Infrastructure page.
SUBREL
SUBREL — substation reliability evaluation, N-1/N-2/higher-order outage studies, stuck breaker/device events, common-mode outage modeling, switching/restoration actions, load point and system reliability indices, alternative comparison, case studies, and training.
- Proven analysis engine used in utility planning
- Alternative configuration comparison and outage-cost quantification
- In Development SUBREL Studio workspace around the same engine
TRANSREL
TRANSREL — transmission system reliability evaluation, transmission outage data, reliability criteria, outage cost, planning alternative comparison, system reliability studies, case studies, and training.
- Transmission network reliability assessment
- Cause-and-effect, situation, root-cause, and weak-point analysis
- Comparison of project options and system improvement alternatives
- Integration with load-flow tools and substation-originated outage data
DISREL
DISREL — distribution system reliability evaluation, historical and predictive reliability indices, feeder/customer reliability analysis, outage-data-based planning support, improvement option comparison, case studies, and training.
- SAIFI, SAIDI, ASAI, EUE, outage cost and customer indices
- Normally-open tie points and alternate supply modeling
- Manual and automatic switching strategy comparison
- Distribution automation and reliability-improvement studies
GRSolutions / Automation
GRSolutions and related automation services help organizations manage engineering data, methods, reports, and repeated study workflows in one structured environment.
- Study workflow automation
- Data and report management
- Customized reports in Word, Excel, PowerPoint, and other formats
- Reduced rework and improved consistency
Flagship software
SUBREL: proven substation reliability analysis for planning decisions
SUBREL is established engineering software used by utilities and consultants to evaluate substation and switchyard reliability. It quantifies how component failures, protection operation, switching, load transfers, and restoration affect load-point indices, system indices, and outage cost—supporting defensible comparisons of design and operating alternatives.
Proven Capabilities
Capabilities below are part of the established SUBREL methodology and have been applied in published utility planning studies.
Study scope
- Substation reliability analysis
- N-1, N-2, and higher-order outage studies
- Maintenance-overlap studies
- Stuck breaker and stuck device studies
- Common-mode outage studies
Modeling & indices
- Switching and restoration modeling
- Load-point reliability indices
- System reliability indices
- Outage frequency, duration, EUE, and outage cost
- Customer interruption and availability measures
Planning outcomes
- Alternative configuration comparison
- Base case versus upgrade evaluation
- Benefit/cost support for capital decisions
- Published case studies (see Case Studies)
How planners use it
A study is organized as a workspace with a base case and multiple project options. Each option has its own input data, run settings, results, and reports—making it easier to compare alternatives under one roof.
What it simulates
SUBREL models station component failures, incoming line outages, maintenance overlapping forced outages, stuck breakers or fuses, automatic protection operation, and user-specified time-sequenced manual switching.
Why it matters
Traditional planning can identify whether a system meets a criterion. SUBREL helps explain which station design is more reliable, how much reliability improves, what the outage-cost benefit is, and whether the improvement justifies the investment.
Next-generation study workspace
SUBREL Studio: from proven analysis to modern study workflow
SUBREL Studio is General Reliability’s evolving local/on-premise workspace around SUBREL — an example of connecting proven analysis with modern workflow reliability. It keeps the proven calculation engine while improving how engineers organize studies, navigate results, compare options, and prepare recommendations. Capabilities are labeled clearly: Proven (established SUBREL), In Development (active prototype work), and Planned (roadmap—not yet available).
Proven Capabilities
Delivered through SUBREL today—decades of utility and consultant use.
- Substation reliability analysis
- N-1, N-2, and higher-order outage studies
- Maintenance-overlap studies
- Stuck breaker and device studies
- Common-mode outage studies
- Switching and restoration modeling
- Load-point and system indices
- Alternative configuration comparison
- Published case studies
In Development SUBREL Studio
Early prototype capabilities under active development—not a finished product release.
- Modern local study workspace
- Dashboard and report navigator
- Searchable result tables with sort and filter
- Component and load-point drill-down
- Multi-study option comparison (e.g. RBTS configurations)
- Mini study summaries for quick review
- Improved organization of study files and validation notes
- Local/on-premise execution on customer infrastructure
- SQLite-based ingestion for repeatable engineering queries
Planned Roadmap
Directional roadmap—planned capabilities, not yet productized.
- Excel-centered reporting workbooks
- Automated Word study reports
- PowerPoint management summaries
- Sensitivity analysis across study parameters
- Load-profile and seasonal scenario analysis
- Smarter screening of candidate improvements
- GIS integration for topology and asset context
- Utility outage-data integration
- Local/on-premise Ask-style investigation
- Secure local AI assistance integrated with study archives and dashboards
- Structured input editing and SUBREL text export from Excel
- Launch Subrel.exe from run setup with consistent logging
Prototype preview
Early SUBREL Studio work includes an RBTS comparison dashboard: executive summaries, contingency and protection reports, component and load-point views, validation traceability, and side-by-side study comparison. These features demonstrate the investigation workflow direction—they are in development, not a general product release.
Planned Secure local AI in SUBREL Studio
Planned SUBREL Studio integration — optional AI-assisted search, summarization, and study review within the Studio workspace, deployed on customer-controlled servers or private networks.
Intended uses include navigating large result sets, comparing study options, drafting report sections, and reviewing archived SUBREL outputs—always as decision support for engineers, not autonomous planning or unsupervised system changes.
See Secure Local / On-Premise AI Assistance and Security & deployment.
Published Case Studies
Selected examples of SUBREL in utility planning
SUBREL has been used in published utility studies to compare station designs, evaluate substation-originated outages, and support cost-benefit decisions.
Ontario Station Upgrade
A probabilistic process was used to compare station design options by combining reliability indices, outage costs, capital cost, and sensitivity studies. The study demonstrated how reliability and economics can be balanced to select a defensible station design.
Sheffield 220 kV Redevelopment
SUBREL and TRANSREL were used to evaluate redevelopment options for a critical 220 kV hub serving North and North-West Tasmania. The analysis compared bus arrangements, station-originated outages, load loss, EUE, SAIFI, SAIDI, and outage cost.
Substation Detail in Transmission Planning
SUBREL supported contingency enumeration with detailed substation topology, breakers, disconnect switches, common-mode failures, and RAS-related planning workflows before further system-level evaluation.
Resources / Downloads
Materials for exploration and customer use
GR is preparing downloadable and request-based resources for early visitors. Items below show availability — contact info@gri-us.com for general inquiries or sales@gri-us.com for demos and service questions.
Power Reliability Developments
Selected primary-source NERC, FERC, EPRI, research and large-load links with brief reliability summaries.
Reviewed 18 August 2026NERC & Grid Reliability Change Watch
Selected, source-verified developments affecting large loads, transmission planning, modeling, operations, and cybersecurity.
Verified 18 August 2026SAFERai.power overview
Independent GR discussion of EPRI’s operational AI-risk initiative for the electric sector, with links to the official EPRI source.
Available now View SAFERai.power →Reliability-Constrained Power Utilization in AI Data Centers
Illustrative Framework and 100-MW Reference Study
A technical working paper exploring how probabilistic reliability methods can be extended to estimate usable electrical capacity in AI data centers while maintaining defined reliability targets. The current study presents a framework and illustrative reference model; topology-aware case studies using public workload and reliability data are under development.
Technical Working Paper — Illustrative StudyResearch note: next-phase topology-aware analysis →
Illustrative reference study — numerical results are not field-validated and do not represent any specific hyperscaler. See also Data Center Power Utilization, Reliability & Risk Modeling, Knowledge & Insights and What we mean by reliability.
Sample case studies
Download selected GR case studies and technical papers related to power-system reliability evaluation, utility planning, and reliability-study automation.
Available nowTechnical Papers
SUBREL / Substation Reliability
DISREL / Distribution Reliability
TRANSREL / Transmission Reliability
See also published case studies on this page.
Program demo
SUBREL, DISREL, or TRANSREL demonstration overview — no download yet; request a live or remote demo.
Available upon request Request software demo →Seminar agenda
Brief information about the three-day power system reliability seminar, workshop options, and hands-on training is available on the Training page. A detailed agenda can be requested by email.
Available upon request View seminar outline → Request detailed agenda by email →SUBREL FAQ
Common questions about substation reliability software.
Coming soon General FAQ →DISREL FAQ
Distribution reliability program questions.
Coming soon General FAQ →TRANSREL FAQ
Transmission reliability program questions.
Coming soon General FAQ →SUBREL Studio notes
Development status and workspace capabilities.
In development SUBREL Studio section →Workflow automation examples
Illustrative process maps and checklist patterns.
Coming soon Ask about workflow examples by email →Landlord / property workflow pilot notes
Pilot-area guidance for property-related administrative workflows.
Pilot service Under reviewCustomer software downloads
Licensed program installers and updates for existing customers — no public download portal yet.
Customer access Contact support →FAQ
Frequently asked questions
Quick answers for visitors exploring GR. View full FAQ page →
- What does “automating the automation” mean? Most organizations already use spreadsheets, forms, portals, email, and databases. GR helps connect those existing tools into clearer, more reliable end-to-end workflows — automating handoffs and repetitive steps between tools you already have.
- Do you replace existing systems? No. GR typically works with your current Excel files, PDFs, portals, databases, and reports — improving how they connect and how people follow the process.
- Can GR work with Excel-based processes? Yes. Excel-based workflows are a common starting point. GR can review, map, automate, and add tracking around spreadsheet-driven processes.
- Can GR help without moving data to the cloud? Yes. Many engagements use on-premise files, local databases, and secure local AI on customer-controlled infrastructure — aligned with your security policies.
- Does GR provide legal advice? GR provides workflow guidance and document-organization support, not legal advice or legal representation. Customers should consult a licensed attorney for legal advice or representation.
- Can customers choose DIY guidance instead of assisted service? Yes. For selected workflows, GR can provide DIY materials — checklists, official links, and instructions — or modest-fee assisted support. See How to start.
- Can GR help utilities keep data on-premise? Yes. Reliability studies, software, and optional AI-assisted tools can be scoped for local/on-premise deployment. Security posture depends on customer architecture and practices; GR does not guarantee automatic security.
- What software programs does GR offer? Established programs include SUBREL, DISREL, and TRANSREL for power-system reliability, plus GRSolutions automation and SUBREL Studio (in development).
- Do you provide training? Yes — GR offers a customizable three-day power system reliability seminar covering reliability foundations, SUBREL, DISREL, TRANSREL, case studies, and AI-assisted workflows, plus customized workshops and hands-on program training. View seminar outline · Request detailed agenda by email.
- Can you help set up an India-based technical team? GR offers U.S.-led, India-enabled capability teams with a pilot-first approach for engineering automation, data, software, and documentation work. Pilot service — inquire by email.
Local AI — additional questions
- What is Secure Local / On-Premise AI Setup? Consulting support to configure AI-assisted tools on customer servers or private networks — for search, summarization, and review aids with human oversight.
- Is this autonomous AI that runs studies or makes planning decisions? No. The focus is controlled decision support. It does not replace calculation engines, protection settings, engineering sign-off, or professional judgment.
- Does GR guarantee data security? No. Security depends on customer architecture, access controls, monitoring, and policy. GR helps design security-policy-aligned workflows; the customer retains responsibility for their environment.
Experience
Led by Dr. Sudhir K. Agarwal
Dr. Sudhir K. Agarwal has more than four decades of experience in power-system reliability, engineering software, planning studies, seminars, and consulting for utilities and engineering organizations worldwide.
Dr. Sudhir Agarwal has supported utilities in the United States, Australia, New Zealand and India in analyzing bulk-system outage events, developing component outage statistics and reliability indices, and applying probabilistic methods to transmission, substation and distribution planning.
Published materials associated with Idaho Power, Bonneville Power Administration and Transend Networks document prior professional experience in outage-event analysis, substation detail in transmission planning, probabilistic comparison of alternatives, and reliability–economic decision support. See Selected examples of SUBREL in utility planning and Selected Utility Applications. These references are not current endorsements, partnerships or statements of active contract.
His background includes a Ph.D. in Electrical Engineering from the University of Saskatchewan, a B.E. in Electrical Engineering from IIT Roorkee, professional reliability research, utility consulting, software development, and extensive training for power-industry engineers.
40+Years in reliability engineering
3Core reliability programs
29+Technical publications and studies
AIModern engineering intelligence focus
Contact General Reliability
Start with the problem you are trying to solve — or choose a specific contact path below for software, training, workflow, or support questions.
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Request a consultation
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General inquiries
info@gri-us.com
Workflow questions, consultations, secure AI inquiries
Phone / text
(858) 213-7564
Call or text to discuss a problem or goal
Sales & demos
sales@gri-us.com
Software demos, services, training, seminar agendas
Customer support
support@gri-us.com
Licensed software and customer downloads
Direct contact
sagarwal@gri-us.com
Dr. Sudhir K. Agarwal
San Diego, California