Every side of the table. One standard.

We are an electrical power systems engineering firm working from 4 kV to 765 kV — interconnection, substations, transmission, studies, renewables, nuclear, data centers and compliance — for utilities, developers, EPCs and public agencies across the United States.

30+ Years in Practice
3 Engineering Groups
11 Service Lines
4–765 kV Voltage Range
4 US Offices
Who We Are

Certainty, where the work is complex

Keentel Engineering is an electrical engineering firm built around the part of a project that decides whether it gets built: the power system. Our engineers are organised into three groups — design, studies and compliance — working under one roof, so a model, a drawing set and the evidence that defends them do not come from three different firms with three different assumptions.

Our clients are utilities, independent power producers, developers, EPC contractors, data center operators and public agencies. Most of them come to us at the point where a project has met something it cannot get past on its own — a queue comment, an interconnection study result, an audit finding, a protection scheme that will not coordinate, a load that has outgrown the service.

We would rather lose the hours than sign something we cannot defend in front of the utility, the auditor or the AHJ.

That is the whole difference. A study you cannot defend is not a deliverable, it is a liability with a cover page. So our proposals name what you will receive, state the assumptions, name the standard we will work to and end — and when the honest answer is that you need less work than you asked for, we say so on the scoping call, before there is anything to invoice.

Every deliverable is sealed by a licensed Professional Engineer, and every study carries the model, the inputs and the reasoning that produced it — because six months later, someone will ask.

Keentel Engineering team at an electrical substation
How the team is built

Three groups, each doing what it does best

Licensed, seasoned engineers across the United States, deliberately specialised — because the person who models the plant should not be the person marking their own homework.

Engineer working on electrical switchgear equipment

The Designers

Power System Design Group

18 Engineers

Physical and electrical packages from 4.16 kV collector stations to 500 kV switchyards — calculated, modelled and detailed for reliable energisation.

Platforms we work in
AutoCAD CAD 3D Revit ETAP PVsyst
Typical deliverables
  • General arrangements, plans, sections and elevations
  • Single lines, schematics and interconnect
  • Grounding, lightning protection and cable schedules
Power system engineers reviewing electrical equipment with a laptop

The Grid Whisperers

Power System Studies Group

17 Engineers

They handle large-plant and grid-dynamics studies so projects work with the utility today and the network they will join tomorrow.

Platforms we work in
PSCAD PSS®E DIgSILENT PSLF ASPEN ETAP CDEGS
Typical deliverables
  • Load flow, short circuit and coordination studies
  • Dynamic stability, EMT and ride-through
  • Harmonics, insulation coordination and grounding
Field engineer recording data at a transmission structure

The Watchdogs

Compliance & Assurance Group

16 Engineers

From NERC and FERC to NFPA 70, NFPA 70E and OSHA, they prepare evidence for inspection, audit and compliance review.

Frameworks we work to
NERC O&P 693 FERC NFPA 70 NFPA 70E OSHA IEEE
Typical deliverables
  • Applicability, registration and gap analysis
  • RSAW narratives and evidence packages
  • Mock audits, controls and compliance training
Leadership

Thirty years, five seats at the table

In 1995, Sonny Patel earned his B.S. in Electrical Engineering from the University of Illinois. Degrees do not build legacies — action does.

For three decades he has worked the power industry from every side of the table: sixteen years as a utility engineer at Exelon / Commonwealth Edison; leadership across generation fleets of every kind — hydroelectric, industrial steam turbine and a 9 GW renewable portfolio; NERC Regional Entity Senior Compliance Engineer and Audit Team Lead, auditing some of the largest utilities in the country; and transmission testing and commissioning lead on equipment from 69 kV to 765 kV — the very top of the North American grid.

Utility. Generation. Transmission. Regulator. Executive. Few engineers have seen all five seats. Fewer still have sat in them.

Utility

16 years inside
Exelon / ComEd

Generation

Hydro, thermal and a
9 GW renewable fleet

Transmission

Testing and commissioning,
69 kV to 765 kV

Regulator

NERC Regional Entity
audit team lead

C-Suite Executive

Founder & CEO,
Keentel Engineering

His experience spans nuclear, hydro and conventional generation, renewables, oil and gas, mining — and today’s data centers, where he is authoring a three-book series on data center design.

He is a licensed Professional Engineer in six states and a licensed Electrical Contractor in Florida (Unlimited EC) — he does not just design the work, he is qualified to stand behind its execution.

Why clients keep us

What actually sets us apart

Not the adjectives every engineering website uses. These are the things clients tell us they came back for.

01

Depth before hours

We do not staff a project to fill a schedule. The engineer who understands the problem does the work, and the fee reflects the work — not the number of people we could put on it.

02

We have sat in your seat

Utility, generation, transmission, regulator, executive. When we tell you how a utility will read your submittal or how an auditor will read your evidence, it is because we have been the one reading it.

03

Design, studies and compliance in one firm

The model, the drawings and the evidence come from the same team, so the assumptions match. No gap between the study that got approved and the design that gets built.

04

Proposals that end

Named deliverables, stated assumptions, the data we need from you, the standard we will work to, the schedule and the fee. No open-ended scope, no discovery phase that never closes.

05

Documentation built to be audited

Every study names its inputs, its model version, its standard and its date. Our compliance group writes evidence for a reader who was not in the room — because that is who reads it.

06

We will tell you to do less

If the scope you asked for is larger than the problem you have, you will hear that on the first call. It has cost us work. It has also kept clients for years.

Our Services

Nine integrated service lines

Multidisciplinary engineering support for power systems, substations, interconnection, transmission, renewables, compliance and complex electrical infrastructure. Each line has a standalone flyer covering scope, standards and deliverables.

Interconnection and Site Intelligence
01

Interconnection & Site Intelligence

Site and market screening, interconnection cost screening, large-load headroom analysis, and queue due diligence for generation and large-load projects.

EHV HV and MV Power System Studies
02

EHV, HV. MV Power System Studies

Load flow, short circuit, arc flash, coordination, stability, EMT, harmonics, grounding and insulation coordination — 4 kV through 765 kV.

Substation Design Services
03

Substation Design
Services

Complete physical and electrical packages from 4.16 kV collector stations to 500 kV switchyards, in air-insulated and gas-insulated configurations.

POI Interconnection Engineering Support
04

POI Interconnection Engineering Support

Queue strategy across every ISO and RTO, what triggers an EMT study in each, model quality gates, affected-system coordination and the interconnection agreement work that follows.

Nuclear Power Plant Services
05

Nuclear Power Plant Electrical Engineering

Offsite power and switchyard interface, degraded voltage analysis, balance-of-plant electrical, and support for uprates, restarts and new build.

Transmission Line Design Services
06

Transmission Line Design Services

Route and corridor studies, conductor and ampacity, sag and tension, structures and foundations, NESC clearances, and reconductoring or uprating.

Owner's Engineer Services
07

Owner’s Engineer
Services

Independent technical representation — design review, procurement and bid evaluation, EPC oversight, factory and field testing, commissioning and due diligence.

NERC O and P 693 Compliance Services
08

NERC O&P 693 Compliance Services

Applicability and gap analysis, PRC / FAC / MOD / VAR remediation engineering, RSAW evidence packages, mock audits and mitigation plans.

Utility-Scale Renewable Energy Engineering
09

Utility-Scale Renewable Energy

Solar, wind, BESS and hybrid plants — collector design, inverter and transformer sizing, plant controller and SCADA, POI studies and IEEE 2800 compliance.

Our Clients

Who we work for

Utilities, independent power producers, developers, EPC contractors, technology companies and public agencies.

Software capabilities

Measured in years on the tools

From power system engineering design to fault studies and relay coordination, Keentel combines engineering fundamentals with cutting-edge simulation and automation.

AutoCAD

27+ Years

DIgSILENT

8+ Years

ETAP

15+ Years

PSSE

14+ Years

Bentley

14+ Years

SEL

27+ Years

EasyPower

10+ Years

PSCAD

5+ Years

SKM PowerTools

15+ Years

Cyme

27+ Years

Power systems, plainly explained.

Field-tested engineering insights covering NERC, PJM, ERCOT, IBR modeling, data-center interconnection and modern power-system studies — delivered directly through the Keentel Engineering channel.

Subscribe on YouTube
Keentel Engineering latest video

Keentel Engineering — Latest Video

New insights on power systems, interconnection, and modern grid engineering.

Keentel Engineering electrical power engineering video series

The Keentel Engineering Series

Start here — an overview of the channel and the topics we cover in each episode.

Utility interconnection for large electrical loads

Utility Interconnection for Large Loads

What utilities require for large-load connections: stability limits, load modeling and ride-through.

AI data centers reshaping United States electricity demand

How AI Data Centers Are Reshaping U.S. Electricity

Why hyperscale AI demand is straining reliability and forcing utilities to rethink planning.

PJM interconnection process explained

PJM Interconnection Explained

How large loads move through the PJM queue, from application to study to energization.

ERCOT Texas electricity grid explained

ERCOT Explained

How the independent Texas grid operates, and why its market rules differ from other ISOs.

PSCAD electromagnetic transient modeling explained

PSCAD Modeling Explained

EMT simulation for inverter-based resources, weak-grid conditions and switching transients.

Large load utility interconnection engineering

Large Load Interconnection

What utilities, developers and regulators each need from a large-load interconnection study.

RMS versus EMT power system simulation comparison

RMS vs EMT

When positive-sequence RMS modeling is enough, and when a study genuinely requires EMT.

Large electrical loads reshaping the United States grid

Large Loads Reshaping the U.S. Grid

What recent Xcel, FPL and Duke planning moves signal for large-load developers.

Digital substations and IEC 61850 protocol explained

Digital Substations & IEC 61850

How station and process bus architectures replace copper wiring, and what changes at commissioning.

Substation design milestones 30 60 90 percent and issued for construction

Substation Design: 30 / 60 / 90 / IFC

What belongs in each milestone package, from 30% concept through issued-for-construction.

Tell us what you are building.

Fifteen minutes with an engineer — not a sales team. Bring the queue comment, the audit finding, the one-line or just the deadline, and we will tell you candidly what it needs and whether we are the right firm for it.