About Us

Innovative Solutions to Maximize Your Benefits

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Who We Are

We are passionate and innovative in everything we do, with a foundation of honesty and integrity.

Top Commercial Solar installer in Southern California

What We Do

We pride ourselves in safely delivering the highest quality products, service, and workmanship.

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People Forward

Our team, customers, and partners are the lifeblood of what we do.  We foster a friendly, fun, and family-oriented environment.

About HES Renewables

Commercial Solar in San Diego

HES Renewables is a local, family owned and operated, full-service commercial solar company. Beginning its quest in 2001 to put power into the hands of the people and businesses of California, HES Renewables expanded out of the HES Solar commercial division 22 years after the original mission began.

Since our founding, our main focus has been to share the financial and environmental benefits of renewable energy. We use the best quality components to provide energy systems that are designed for durability and results.

We use Tesla and BYD for battery storage to provide maximum energy storage capacity for your business or property. All of our installers are highly trained and certified by Tesla and BYD. We don’t subcontract our installations.

We are committed to client success and 100% customer satisfaction. We will deliver cost-saving alternatives to utility power that bring financial savings, energy cost stabilization, reliable power, and energy independence; and our industry experts will ensure your system maximizes the incentives available to your business.

We have brought solar power to the people since 2001 and can help you too. Call us at 866.437.7639 or schedule your free energy consultation online.
Construction worker in hard hat holds onto girder over his head.
Tesla Megapack energy storage system installation by HES Solar

Meet Our Leadership Team

California solar company owner wearing a button up shirt

Ross
Williams

President and CEO
commercial solar and energy storage company officer

Wenjie
Chen

Vice President

Spencer
Holt

Director of Business Development

Meet Our Sales Team

Man smiling in polo shirt with HES Renewables logo on the chest.

Kirstin
Bement

Commercial Development Manager

Kelsey
Rawlings

Territory Sales Manager
Business solar company employee wearing a polo

Yazan
Ziadeh

Senior Sales Engineer

Meet Our operations Team

Top commercial solar construction manager

brett
reischman

Senior Construction Manager
Solar designer wearing a polo shirt

charlie
nguyen

Design Engineer
California solar company project manager in a polo

charles
MoHR

Project Manager
An HES Renewables employee in a brown company polo shirt smiles to the camera.

Josh
Jump

Project / Commissioning Manager
California solar employee

Bernie
Silva

Quality / Safety Manager
Commercial solar San Diego employee placeholder
San Diego business solar employee in a polo

Andrew
Hickey

Construction Manager
Commercial solar San Diego employee placeholder

Scott
Ballardo

PV Designer
Commercial solar San Diego employee placeholder

Meet Our SERVICe Team

Commercial solar service manager

Albert
Ongkingco

Service Manager
Solar system service technician in brown polo shirt with company logo in gold.

Joe
Seraphin

Service Sales Manager
Commercial solar San Diego employee placeholder
Commercial Solar Service technician in brown company polo with HES Renewables logo on shirt

Niko
Suarez

Service Tech II

Juan
Mancilla

Service Tech I
Commercial solar San Diego employee placeholder

HES Renewables History

2001

Solar Company Founded

Founded on April 16 in response to the 2000–2001 California electricity crisis under Governor Gray Davis.

2002

Commercial Solar System

Installed 750kW solar carports at North Island Naval Air Station.

2006

Solar at San Diego School

Installed a 200kW system at Monterey Ridge Elementary School.

2006

Utility Solar Installation

Installed 350kW solar carport system for Vallecitos Water District.

2008

H.G. Fenton Partnership Established

Installed 165kW rooftop and carport system on company HQ.

2008

Hamann Construction Partnership Established

Roof-mounted system installed, beginning long-term partnership with Hamann Construction.

2010

PV Laminate System

Installed 803 Uni-Solar PVL modules on Scottish Rite cathedral's arched roof.

2012

First Virtual Net Metering in California

First California VNEM solar system in San Diego, boosting NOI for multi-family property.

2014

Ground Mount System

Expanded hillside, ground mount solar array at Aquatera, an H.G. Fenton property in Mission Valley.

2017

YMCA Solar Partnership

Completed seven solar projects for San Diego YMCA facilities with PPA financing.

2019

Parking Garage Top Solar

Installed longspan array and Tesla ESS on county health services building in Oceanside.

2020

National Recognition

Named National Commercial Dealer of the Year by SunPower; regional winner four years running.

2021

20 Years as California Solar Installer

Celebrated company's 20th Anniversary as a top solar company in California.

2021

Intelegant Award

Won Intelegant Award for elegant commercial solar design; 20-year anniversary milestone.

2021

First Micro-Grid in IID

Installed first commercial micro-grid in Imperial Irrigation District territory at Mathis Home with rooftop solar and Megapack.

2022

Service Department Launched

Established department to provide O&M agreements, service, and repairs throughout Southern California.

2022

First Commercial Micro-Grid in Carpinteria

Installed dual Tesla Megapack ESS solar systems at BEGA North America in Carpinteria.

2023

Commercial Establishes New Corporation

Commercial division branches out into HES Commercial, Inc.

2023

Company Rebrand

HES Commercial, Inc. rebranded as HES Renewables with new name and logo.

2024

Silfab Installer of the Month

Honored as Silfab Solar’s Installer of the Month in August 2024.

2025

Completed H.G. Fenton Portfolio Build

80+ systems, totaling over 12 megawatts, producing over 19 million kilowatt hours per year.

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Ross Williams

President And CEO

Mr. Williams joined Home Energy Systems in 2010 where he began developing and implementing many of the company’s programs and policies that are still in use today. His degree in Business Administration from the University of Pittsburgh as well as his professional experience as a successful project manager for a Washington DC area general contractor served him well when he moved to California and joined the solar industry and its purpose. Mr. Williams spurred initial quick growth of the company and immediately knew it was his calling. So confident in the business’ direction, in 2015 Mr. Williams purchased the company from its trailblazing founder. Eight years later, the company’s commercial division expanded and incorporated as a stand-alone company, HES Renewables. Through innovation, a focus on customer care, partnerships with premier solar component providers, and the evolution of a company culture his efforts have resulted in strong company growth and client success.

Wenjie Chen

VICE PRESIDENT

Mr. Chen first applied his Bachelor’s degree in Mechanical Engineering from UC Berkeley to auto industry projects prior to entering the solar industry in 2011 with a stint in design & engineering at Tesla/SolarCity that took him through residential solar and into commercial solar. In July of 2017 Mr. Chen made the jump to HES Renewables (then HES Solar’s Commercial Division) and after that point the company won four straight SunPower Commercial Regional Top Producer of the Year awards as well as being honored with the 2020 SunPower National Commercial Dealer of the Year top designation. Mr. Chen leads HES Renewable’s creation of the best quality systems that optimize locations, expansion of installations of energy storage and EV charging stations, strengthening of HES Renewable’s amazing partnerships, and spreading of the company’s reach across the entire Southern California region from its San Diego home base.

Spencer Holt

Director of Business Development

Mr. Holt developed a successful marketing and sales career before joining HES Renewables (then HES Solar) in 2018 to lead the company’s Commercial Business Development. His knowledge, relationships and innovative approaches have been instrumental components in the strong and steady growth of the company since his arrival. After earning a degree in Political Science from UC Berkeley Mr. Holt has made San Diego home for the past 20 years. He brings a wealth of local experience and relationships to the HES team, and he is excited to grow HES Renewables through improving the financial position of local businesses while also expanding the renewable energy footprint in the state. He takes pride in the company’s distinction of winning SunPower’s “Top Commercial Regional Producer of the Year ” award for four consecutive years as well as receiving SunPower’s 2020 National Commercial Dealer of the Year Award, the manufacturer’s top honor.

Kirstin Bement

Commercial Development Manager

Mr. Bement joined HES Renewables in early 2024 as a Territory Sales Manager for the Los Angeles area. Mr. Bement brought 18 years of solar experience to his role and now leads the push to expand HES Renewables further into the greater Los Angeles region. Mr. Bement has a deep understanding of all facets of solar power and energy storage, from project development, design, engineering, permitting, construction and ongoing asset management. Throughout his solar industry experience he found his calling in consultative business development; he finds tremendous satisfaction in helping clients achieve their energy and cost-saving goals, and takes pride in strong follow-through to ensure each energy project is perfectly understood and fully utilized. On a deeper level, Mr. Bement finds great meaning in helping the US move toward cleaner, greener energy sources. When not working or spending time with his family, Mr. Bement enjoys surfing, sailing and practicing as many musical instruments as he can get his hands on.

Kelsey Rawlings

Territory Sales Manager

Ms. Rawlings came to HES Renewables in 2025 and brought with her a Bachelors Degree in Natural Resource Management and Conservation from San Francisco State University. Originally born in Lake Tahoe, Ms. Rawlings grew up in Oceanside and Temecula where she developed her passion to protect the environment through local beach clean-ups and camping trips to the National Parks. After college, Ms. Rawlings pursued roles in the solar industry that included distribution, residential solar sales, and eventually solar manufacturing. Ms. Rawlings gets great satisfaction out of helping clients make impactful, sustainable decisions that align with their business and energy goals. When away from work, you might find Ms. Rawlings forging rings – she recently took up silversmithing.

Yazan Ziadeh

Senior Sales Engineer

Mr. Ziadeh grew up in Illinois, spent several years living in Jordan, then moved to San Diego as a teenager where he earned a Bachelor of Science degree in Chemical Engineering from the University of California at San Diego. After gaining experience in the automotive industry as well as the pharmaceutical industry, he joined HES Renewables (then HES Solar) in early 2023. He enjoys being a part of providing energy that reduces business costs and impact on the environment through his role in the solar industry. When he’s not analyzing energy usage, designing solar systems, or preparing commercial proposals you can find Mr. Ziadeh playing basketball or adding to his wristwatch collection. His long-term personal goal is to visit as many countries as possible before reaching the age of 50.

Brett Reischman

Senior Construction Manager

Mr. Reischman has been a San Diegan since the age of 15 after living in Washington, Alaska, and other parts of California. Mr. Reischman’s solar experience began in 2007 where he first gained expertise in commercial solar; his first job was a full megawatt-sized project. After gaining more expertise in commercial solar he transferred into residential solar construction where he became a Lead Inspection Tech and immediately implemented innovative approaches to improving the quality and completion speed of solar projects. Mr. Reischman joined HES Renewables (then HES Solar) in 2021 where his innovation further bolsters the continued growth and efficiency improvements of HES Renewables. As testament to Mr. Reischman’s penchant to build, one of his hobbies is blacksmithing.

Charlie Nguyen

Design Engineer

Mr. Nguyen grew up in Southern California up to and through earning a Bachelor of Science degree in Industrial Technology with a concentration in Energy and Transportation Technology from CSULA. Post-college and between engagement and wedding, Mr. Nguyen and his fiance split time between California and Arizona; California won out and Mr. Nguyen and now his family of five have planted roots in Southern California. Mr. Nguyen found the solar industry through a college internship, leading to four years as a residential solar system designer. He joined HES Renewables (then HES Solar) in June of 2021 and was impressed by the quality and offerings from a company big enough to do everything yet small enough to keep the personal touch with clients. Today Mr. Nguyen designs and constructs commercial solar systems that maximize their energy production and benefit to the environment. When not planning solar arrays or exceeding Authority Having Jurisdiction and all local building requirements, Mr. Nguyen can be found at a local zoo with his wife and kids or cheering on the Los Angeles Lakers or Arizona Cardinals.

Charles Mohr

Project Manager

After growing up in Hawaii, Mr. Mohr moved to Southern California for college and has called it home ever since. Mr. Mohr joined HES Renewables in 2023 and brought with him a degree in Renewable Energy Systems from Santa Monica College; he currently also holds an NABCEP certification, is LEED accredited, and as of the summer of 2024 is in the process of testing for his PMP certification as well as applying into the SDSU Construction Management major. Mr. Mohr’s solar experience began in college as a permit runner. He gained a deeper knowledge of solar projects through design and installation roles before joining HES Renewables as a Project Manager. His position has him ensuring optimal value, quality, and safety of each solar, storage, and EV charging station project. Mr. Mohr strives to be the best in all facets of his life, both professionally and personally – just don’t fault him for rooting for sports teams based in Los Angeles rather than San Diego. When not helping his clients and contributing to HES Renewables’ growth, you’ll find Mr. Mohr having fun at one of his kids’ sports events, church, the beach, the river, or while camping.

Josh Jump

Project / Commissioning Manager

Mr. Jump’s professional experience started in training as an electrician where he received his OSHA, scissor-lift, and forklift certifications. A San Diego native, Mr. Jump spent time in New Orleans before returning to San Diego and then joining HES Renewables in early 2024. Prior to that, he gained ten years’ of experience in the solar industry as an installer and then an installation crew foreman. He found his calling in project management, and takes great satisfaction in helping design top-quality solar installations and then seeing them energized to bring renewable energy to the client. He appreciates the positive culture at HES Renewables that emphasizes project quality and also encourages professional growth among its employees. When away from the office, Mr. Jump enjoys writing and learning about new things such as the capabilities of Artificial Intelligence.

Bernie Silva

Quality / Safety Manager

Mr. Silva is a Southern California native who grew up in San Diego. After gaining construction experience and multiple certifications as a structural welder, he came to HES Renewables (then HES Solar) in 2014. His prior construction experience serves him well in commercial site surveying, quality assurance, and safety management. Mr. Silva enjoys his job and loves to see a plan move from blueprint to energy system reality. Mr. Silva came to the solar industry for the stability and growth of renewable energy projects. In his free time he enjoys lowriding; his hobby is creating custom cars. He shows an award-winning car named “Back by Popular Demand.”

Andrew Hickey

Construction Manager

Mr. Hickey is a San Diego native who joined HES Renewables team in 2019 with three years of ABC Electrical Trade School education and an OSHA 10 certification. He started at HES Renewables as an installer and worked his way up to the Electrical Foreman position. He takes great pride in the build of a system and strives to make panel and disconnect installations look like artwork. In his role as Commercial Construction Manager, Mr. Hickey helps manage five field crews and their job sites. When not helping HES Renewables with its incredible growth since joining the team, you can find Mr. Hickey riding his dirt bike or camping.

EMPLOYEE BIO COMING SOON

Title, Department

The HES Renewables team is based in San Diego and Southern California. We’re working on employee bios and expect to have this bio updated soon.

Albert Ongkingco

Service Manager

Mr. Ongkingco brought general construction, commercial property improvement, as well as seven years’ of prior solar experience with him when he joined HES Renewables in early 2023. Mr. Ongkingco, with his business degree and experience leading a utility-scale project in Kauai, Hawaii, now runs the HES Renewables service department. He appreciates the renewable energy industry’s family-like dynamic and is passionate about finding sustainable energy solutions beyond fossil fuels. In addition to providing excellent service to HES Renewables’ clients, Mr. Ongkingco is expanding the commercial solar service offerings to clients that did not engage HES Renewables for their initial solar installation. Outside of work, Mr. Ongkingco is often found restoring or tinkering with cars, attending car shows, or riding his motorcycle or mountain bike; he is also an avid wakeboarder and surfer.

Joe Seraphin

Service Sales Manager

Mr. Seraphin brought a Bachelor of Science degree from the University of Mary Washington, as well as extensive construction and electrical experience which include designations of NABCEP Pro and Journeyman Electrician, when he joined HES Renewables in 2024. Mr. Seraphin entered the solar industry in 2012 because he wanted to make a positive difference in the world. With experience in both Virginia and California, he takes great enjoyment watching customers and clients experience their own satisfaction in their solar systems. His role at HES Renewables is to continue the growth of the service department into the top, “lean, green, problem-solving machine.” Mr. Seraphin has lived on a boat, at one time not touching a dock (but touching beaches) for over three months in the Sea of Cortez. When not at HES Renewables you will likely find Mr. Seraphin racing sailboats in San Diego Harbor, mountain biking, or stand up paddleboarding.

Niko Suarez

Service Tech II

Mr. Suarez joined HES Renewables in 2023 with electrical experience including lockout/tagout procedures, arc flash safety, Enphase/SolarEdge battery installation, OSHA 30, and a C10 electrical contractor’s license. Mr. Suarez has lived in San Diego as well as Denton, Texas and now calls San Diego home. In his previous roles, he gained experience as a solar installation forman as well as in solar inspection and service. With his role at HES Renewables, Mr. Suarez takes satisfaction in helping to lower clients’ energy costs through long-term solar service solutions, and is dedicated to quickly dispatching technicians to diagnose and resolve any possible production or monitoring issues. When not at HES Solar, Mr. Suarez can often be found skateboarding, hiking, or scuba diving.

SOLAR, ENERGY STORAGE, & EV CHARGING STATIONS

We are a San Diego-based solar energy production and energy storage installation company. We have been an energy innovator since 2001 and can handle projects from solar-only arrays to micro-grid solar and storage systems with on-site EV charging stations. 

If you’re looking into the benefits of on-site energy production, energy storage, or EV Charging capability, we’d love to speak with you. We’ll show you how to lower and stabilize energy costs, receive the maximum incentives, open new revenue streams, and gain control over one of the largest expenses of your business or commercial property. 

Click here to be contacted by an HES Renewables representative, or simply dial us at 866-HES-RNEW (866-437-7639).

Robert Laverty

Senior Energy Consultant, Residential

Robert Laverty joined the HES team in the summer of 2018, bringing his ten years of solar design experience and his Bachelor’s degree from the University of Puget Sound with him. Robert is dedicated to finding solutions to help families produce and store electricity in order to reduce their reliance on grid power as well as help reduce their household’s carbon footprint. Robert’s experience as a newspaper editor as well as his involvement with the sustainability-focused Rocky Mountain Institute drives him to constantly seek out innovative ways to meet energy needs through renewable resources as well as helps him share those ideas with Southern California homeowners. When not at work or volunteering time with his church or community, Robert spends time with his wife and two sons or pursues his passion of fly fishing.
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