Learn More About Keentel Engineering.

At Keentel Engineering and its Consultants, our mission is to establish a sustainable business that delivers top-notch technical services to meet the unique needs of our valued clients.

A person in a white lab coat using a pipette to transfer liquid into a clear glass vial in a laboratory setting.
A black and white close-up shows a human eye, focusing intensely on the iris with distinct, radial patterns.
An aerial view of a white, heart-shaped island surrounded by a calm, turquoise ocean.
A golden-brown, crispy fried chicken breast fillet sandwich on a toasted bun with pickles and sauce.

About Keentel Engineering

Your Trusted Partner in Electrical Engineering and Power Systems


At Keentel Engineering, we deliver electrical power engineering services built on 30 years of experience and a commitment to excellence. Our clients include utilities, developers, EPCs, and public agencies across the U.S.


Unlike firms that sacrifice technical depth to chase billable hours, we prioritize precision, compliance, and value engineering. From transmission services and relay modeling to winterization and SCADA planning, we never compromise on quality.

Who We Are

Learn more about Keentel Engineering. We’re not just engineers—we’re problem solvers, system thinkers, and quiet revolutionaries helping power the future.

Across the United States, our 51-member electrical engineering team shows up every day to bring certainty to complexity. We’re licensed. We’re seasoned. And we’re divided into three groups, each doing what they do best:

The Designers

18 Engineers

They turn lines into lifelines. With tools like AutoCAD, Revit, ETAP, PVSyst, and CAD 3D, they translate ambition into design—calculating, modeling, and detailing systems that work the first time.

The Grid Whisperers

17 Engineers

These are your PSCAD, PSS®E, and DIgSILENT experts. They speak the language of large-scale power plants and grid dynamics—ensuring your project plays well with the utility and the future.

The Watchdogs

16 Engineers

They live and breathe compliance. From OSHA and NFPA 70 (NEC) to NERC and FERC, they make sure your systems are bulletproof—ready for inspection, audit, and everything in between.

The Designers

Power System Design Group

18 Engineers

They turn lines into lifelines. With tools like AutoCAD, Revit, ETAP, PVSyst, and CAD 3D, they translate ambition into design—calculating, modeling, and detailing systems that work the first time.

The Grid Whisperers

Power System Studies Group

17 Engineers

These are your PSCAD, PSS®E, and DIgSILENT experts. They speak the language of large-scale power plants and grid dynamics—ensuring your project plays well with the utility and the future.

The Watchdogs

Regulatory Compliance, Inspection & Audit Group

16 Engineers

They live and breathe compliance. From OSHA and NFPA 70 (NEC) to NERC and FERC, they make sure your systems are bulletproof—ready for inspection, audit, and everything in between.

Why Choose Us

At Keentel Engineering, we take pride in being the go-to engineering firm for power and utility system planning, design, control, and analysis. Some of the many attributes of our company that set us apart are:


At Keentel Engineering and its Consultants, our mission is to deliver high-quality technical services tailored to the unique needs of our clients.


We are committed to maintaining a strong technical foundation and providing reliable, cost-effective solutions.


With over 30+ years of hands-on experience in industrial and utility power systems, our expertise includes power system analysis, electrical design, transmission planning, protective relaying, and NERC compliance.


We are dedicated to solving our clients’ challenges and ensuring the reliability and performance of their electrical systems.



Sandip "Sonny" R. Patel, P.E.

IEEE Senior Member · Founder & CEO, Keentel Engineering


In 1995, Sonny Patel earned his Electrical Engineering degree from the University of Illinois. But degrees don't build legacies — action does.


For three decades, he has worked the power industry from every side of the table: 16 years as a utility engineer at Exelon/Commonwealth Edison; generation leadership across hydroelectric, industrial steam turbine, and a 9 GW renewable fleet; NERC Regional Entity Senior Compliance Engineer and Audit Team Lead, auditing some of the nation's largest utilities; and testing and commissioning lead on equipment up to 765 kV — the very top of the North American grid.


Utility. Generator. Regulator. Consultant. Few engineers have seen all four seats. Fewer still have sat in them.


His experience spans nuclear, hydro, 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 doesn't just design the work; he's qualified to stand behind its execution.


Today, as Founder and CEO of Keentel Engineering, Sonny leads 51 engineers delivering substation design, power system studies, NERC compliance, and commissioning — done right, coast to coast. Three decades. Every side of the table. One standard: accountable engineering.

Sandip "Sonny" R. Patel, P.E.
Founder & CEO, Keentel Engineering

Our Services

Multidisciplinary engineering support for power systems, substations, interconnection, transmission, renewables, compliance, and complex electrical infrastructure.

Power System Studies engineering

Power System Studies

Power system analysis, modeling, and simulation to support reliable operation, grid integration, system performance, and informed engineering decisions.

Substation Design Services

Substation Design Services

Electrical engineering and design support for reliable, safe, coordinated, and constructible substation infrastructure across complex power projects.

NERC O&P 693 Compliance Services

NERC O&P 693 Compliance Services

Engineering support for NERC compliance, technical documentation, assessments, reliability requirements, audit preparation, and regulatory readiness.

POI Interconnection Engineering

POI Interconnection Engineering

Our experienced engineering team supports complex grid interconnection projects with technical studies, substation coordination, utility requirements, and commissioning support.

Utility Scale Renewable Energy

Utility Scale Renewable Energy

Electrical engineering support for utility-scale solar, wind, and energy storage projects, including system design, technical studies, and grid integration.

Transmission Line Design

Transmission Line Design

Transmission line engineering for complex power infrastructure, including route optimization, structural modeling, conductor design, sag-tension analysis, and construction-ready deliverables.

Nuclear Power Plant Engineering

Nuclear Power Plant Engineering

Specialized electrical engineering support for nuclear power facilities, including safety-class power systems, protection coordination, equipment upgrades, compliance, and diagnostics.

Owner's Engineer Services

Owner's Engineer Services

Independent Owner’s Engineer support including design reviews, procurement support, EPC oversight, QA/QC, technical coordination, construction support, testing, and commissioning.

MEP Engineering Services

MEP Engineering Services

Integrated mechanical, electrical, and plumbing engineering for industrial, commercial, warehouse, and energy-intensive facilities, including HVAC, fire protection, BIM, and electrical systems.

Who We've Served

Serving utilities, EPCs, developers, and infrastructure organizations supporting critical power systems nationwide.

Flag within a target reticle.

Our Mission

To ensure we offer clients value-added solutions that showcase technical prowess. Our work is superior, cost-effective and designed to enhance electrical engineering system safety and reliability with the combination of our experience, knowledge, technology and expertise with ASPEN, PSSE (version 33/34), Digsilent and ETAP and other power system software programs.

Black and white eye icon, looking to the right.

Our Vision

To offer a growth rate of over 50% in the next five years by becoming a top choice and preferred partner for specialized and provider of various electrical engineering solution among IPP, large scale renewable sector and conventional T&D assets owners.

Black seal with a white star inside a circle.

Our Assurance

We want to continuously deliver projects promptly, thereby exceeding the stakeholders’ expectations in terms of high quality and completion while following industry mandated procedures and programs.

Red 3D

AutoCAD

27+ Years

DigSILENT | PowerFactory logo in dark red text.

DIgSILENT

8+ Years

Etap logo: red text with

ETAP

15+ Years

Siemens PSS®E logo. Teal text on a white background.

PSSE

14+ Years

Bentley MicroStation logo. White background. The word

Bentley

14+ Years

Blue rectangular logo with rounded corners. Contains the letters

SEL

27+ Years

EasyPower logo: gray circle with

EasyPower

10+ Years

PS CAD logo in dark blue text inside a yellow oval with a white indicator at the bottom.

PSCAD

5+ Years

Logo: yellow diamond with text

SKM PowerTools

15+ Years

Logo with blue CYME text and a gray waveform beneath it.

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

Engineering Support for Your Next Project

At Keentel Engineering, we take pride in being the go-to engineering firm for power and utility system planning, design, control, and analysis. Some of the many attributes of our company that set us apart are:

Targeted person icon. Fo F

Client-Focused Work Approach

Our team works cohesively on every project and with every client. We first develop a solid understanding of your project goals, requirements, and needs. From concept to commissioning, we assist you in every step.

Person icon with a star-shaped award. Expe Exp E Ex

30 Years of Experience

We have over two decades of experience in design and interconnection. Rest assured, we have the knowledge, understanding, and expertise to handle and execute all types of projects with sheer perfection and superior workmanship.

Black and white badge with a star inside a circle. Qual Q

Quality with Innovation

At Keentel Engineering, we have established our stellar market reputation on quality, work ethics, and innovation.

Magnifying glass over a sequence of shapes: diamond, circle, triangle, hexagon.

Attention-to-Detail

We work on every project with laser focus and attention to detail. This enables our team to deliver desired results with complete satisfaction.

Let's Discuss How to Optimize Your Next Project

Submit

Blog and Updates

Structure height and voltage in transmission line design guide by Keentel Engineering with power tow
By SANDIP R PATEL August 22, 2026
Learn how transmission structure height is calculated using NESC clearance rules, sag-tension analysis, voltage classes, terrain, span length, and IEEE standards.
Gas-insulated substation design and engineering diagram.
By SANDIP R PATEL August 22, 2026
Explore gas-insulated substations (GIS), including design, GIS vs AIS, SF₆ alternatives, grounding, VFTO, safety, and key IEEE and IEC standards.
Sizing AC cables in a utility-scale solar PV plant technical guide by Keentel Engineering, showing N
By SANDIP R PATEL August 22, 2026
Learn NEC-based AC cable sizing for utility-scale solar PV plants, including ampacity, voltage drop, derating factors, short-circuit checks, and inverter examples.
By SANDIP R PATEL August 22, 2026
Learn how NERC's new data center rules affect registration, modeling, protection, compliance, and what computational load operators should do now.
POI interconnection engineering for large loads and data centers.
By SANDIP R PATEL August 20, 2026
2026 guide to POI interconnection for data centers and large loads. Explore ISO/RTO requirements, grid studies, PSCAD modeling, costs, timelines and NERC rules.
Solar and battery storage shared bus resonance diagram
By SANDIP R PATEL August 20, 2026
Learn how shared 480 V solar and BESS buses create resonance, harmonic, grounding, and transformer issues—and how proper engineering prevents failures.
12.47 kV pole-mounted distribution transformer assembly designed for U.S. IEEE and NESC utility stan
By SANDIP R PATEL August 20, 2026
Learn U.S. pole-mounted transformer design requirements, including IEEE, ANSI, and NESC standards, voltage classes, grounding, protection, and DER considerations.
Neutral grounding resistor sizing guide for HRG and LRG power system grounding applications
By SANDIP R PATEL August 20, 2026
Learn how to size neutral grounding resistors using IEEE and NEC practices, including HRG/LRG selection, fault current calculations, duty ratings, and examples.
PRC-023-6 BESS relay loadability compliance guide
By SANDIP R PATEL August 19, 2026
Understand PRC-023-6 for utility-scale BESS: applicability, the 39-month rule, relay loadability, setting criteria, Category 2 IBRs, and audit evidence.