About Us

Leaders in Customer Service, Innovation, and Quality

Rooftop solar panel installation best quality work

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.

Best solar company in San Diego celebrates growth

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 Solar

A Top Solar Energy Company in San Diego

HES Solar is a local, family owned and operated, full-service solar company that was established in San Diego in 2001. Since our founding, our main focus has been to share the financial and environmental benefits of solar renewable energy with both residential and commercial clients. Our solar experts use the best quality solar arrays to provide energy systems that are designed for durability and results. We also use Tesla, Enphase, and BYD for battery storage to provide maximum energy storage for your home, business, or electric vehicles. All of our installers are certified by Tesla, Enphase, and BYD and we don’t subcontract our installations. We are committed to customer satisfaction and provide top-tier support to all of our customers. We specialize in turn-key implementation of money-saving alternatives to utility power that includes design, installation, and monitoring:

We have brought solar power to the people since 2001 and can help you too. Call us at 619-692-2015 or schedule your free energy consultation online.
Commercial energy storage installation
Residential solar installation in Escondido
Tesla Megapack energy storage system installation by HES Solar

Meet Our Leadership Team

Ross Williams

President and CEO

Brad Souza

President of Residential

Wenjie Chen

Director of Commercial
Top San Diego solar employee for HES Solar

Eva Tan


Meet Our Residential Team

Gene is a popular Senior Energy Consultant at HES Solar. He's a expert is the benefits of solar systems and home batteries

Gene Najor

Senior Energy Consultant, Residential
Robert is a Senior Energy Consultant at HES Solar. He will answer all your questions on the best solar system for your home.

Robert Laverty

Senior Energy Consultant, Residential
David is an Energy Consultant for HES Solar, one of the top San Diego based solar companies in California

David Shemai

Energy Consultant, Residential
Tom is an Energy Consultant for HES Solar. He works at a top San Diego solar company

Tom English

Energy Consultant, Residential
Solar system salesman in a gray HES Solar polo shirt

Mark Wang

Energy Consultant, Residential
Tommy might be the first voice you hear from HES Solar. Tommy will start your process toward going solar with HES Solar

Tommy merced

Inside Sales, Residential

Meet Our Commercial Team


Director of Commercial Sales
Photo of HES Solar employee in gray polo shirt. He has a beard and is wearing glasses.


Director of Internal Sales
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Commercial Sales Engineer
Top San Diego solar company employee Jake


Sales Consultant
Top San Diego solar company employee MC


Chief Electrical, Commercial
Top San Diego solar company employee Brett


Commercial Construction Manager


Commercial Project Manager
Photo of a happy San Diego solar employee in a gray polo shirt


Designer, Commercial
Charles is a key player in the Commercial division of HES Solar


Project Engineer
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Commercial Quality / Safety Manager
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Assistant Commercial Construction Manager
Photo of man looking into camera. He wears a gray polo shirt with HES Solar on the chest


Commercial Project Manager
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Commercial Sales Engineer


Territory Sales Manager

Meet Our SERVICe Team

Miranda Gibbons

Service Specialist

Meet Our Office Team

A woman wearing glasses smiles to the camera

Shannon Ricaud

Human Resources Manager
Woman smiling to camera in gray polo


Purchasing Manager
A man smiles to the camera. He wears a gray polo with HES Solar on the front and 20 Years on the sleeve

Pete Peterson

Marketing Manager
HES Solar employee in a gray polo

Elizabeth Tremble

Office Manager
Woman in gray HES Solar polo shirt


Accounting Manager
Solar employee in a gray polo shirt

Azela Munguia

Jr. Staff Accountant

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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 brand and immediately knew it was his calling. So confident in the business’ direction, in 2015 Mr. Williams purchased the company from its trailblazing founder and has since expanded, improved, and even rebranded the company to HES Solar. 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 an average annual growth of 30% and recently led to HES Solar’s designation as the 2020 SunPower Commercial Dealer of the Year.

Brad Souza

President of Residential

Mr. Souza joined HES Solar in the Spring of 2020 to oversee the Residential division just as the COVID-19 lockdowns were being enacted. Undaunted, and with 22 years in the energy industry, Mr. Souza led the division through the rapidly changing business landscape and ultimately delivered the division’s best quarter just nine months after taking the reins. Mr. Souza’s work experience at SunPower exposed him to HES Solar’s impressive design, install, and service functions as well as the company culture, and when an opportunity arose for him to grow what he saw as the best solar installer in Southern California he made the leap and has steadily expanded the Residential division. Mr. Souza has earned a Bachelor’s degree in Environmental Resources Engineering with an emphasis on Energy from Humboldt State University and an MBA from the University of Southern California. He is also a licensed Mechanical Engineer in California.

Wenjie Chen

Director Of Commercial

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 Solar’s Commercial Division and since the HES Solar Commercial Division has 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 Solar Commercial’s creation of the best quality systems that optimize locations, expansion of installations of energy storage and EV charging stations, strengthening of HES Solar’s amazing partnerships, and spreading of the company’s reach across the entire Southern California region from its San Diego home base.

Eva Tan


Ms. Tan moved to Northern California from Singapore in 2004 and reached San Diego in 2012 where she earned a Bachelor’s degree in Economics with a minor in Finance from UC San Diego. She worked for a short time as a consultant to HES Solar beginning in 2019 and joined the company full-time in 2020 to adapt the department to the company’s rapid growth. Ms. Tan structures and guides the accounting department’s procedures and systems to meet the evolving needs of the various departments she supports. HES Solar is the first solar industry company Ms. Tan has worked at and she is inspired and impressed by the passion her co-workers show for the work being done at the company.

Gene Najor

Senior Energy Consultant, Residential

Gene Najor is a San Diego native who earned a Master’s degree in Public Administration at San Diego State University. Gene is passionate about helping the environment and has found a calling in doing that while at the same time gaining another sense of satisfaction saving families money on their energy costs. Gene joined HES Solar in June of 2019 after five years in the solar and electric vehicle industry. Gene has seen the planet he loves, touching down in over 25 countries and visiting families in homes without electricity. Gene spends his free time with his wife and two kids.

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.

David Shemai

Energy Consultant, Residential

Mr. Shemai joined HES Solar and helped accelerate the company’s strong 2021 growth. He grew up in Cincinnati and doubled-majored at Ohio State University in Business Marketing and Spanish Literature. Mr. Shemai stepped from the university commencement ceremony in Ohio almost directly onto the beach sand of San Diego in 2007. He has worked in the corporate world while also following his entrepreneurial drive in 2012 by creating and growing an active wear company with designs based on and inspired by the culture of Thailand. Mr. Shemai has been a sales consultant for fourteen years; applying that experience to the solar industry gives him great satisfaction by bringing the financial and environmental benefits of solar to more homes. When Mr. Shemai isn’t helping families plan and design their ideal solar system, he can be found surfing, sailing, climbing, running, SUPing, snowboarding or even playing the musical instrument “the hand pan.”

Tom English

Energy Consultant, Residential

Tom English joined HES Solar in 2021 with a Bachelor’s degree in Finance from San Diego State University, decades of customer service experience, years entrepreneurial business experience locally in Carlsbad, and five years of local solar industry experience. Tom has been an environmental advocate for his entire adult life and has a ‘one rooftop at a time’ philosophy toward improving the world, starting from his homebase of San Diego. Tom is also passionate about the cost savings that solar brings to homeowners in Southern California as they gain energy independence through renewable energy production and storage technology. When not helping grow renewable energy production Tom can be spotted in the waves or harnessing the wind on his hydrofoil surfboard.


Title, Department

HES Solar has had four strong years of growth in 2020, 2021, 2022 and now 2023. We’ve been hiring steadily and now are well over 100 employees strong – all based in San Diego and Southern California. We’re working on employee bios and expect to have this bio updated soon.

Tommy Merced

Inside Sales, Residential

Mr. Merced came to HES Solar after three years in the solar industry. Living in New Jersey, Mr. Merced was drawn to the solar industry by its incredible growth. Mr. Merced might be the first person you speak with at HES Solar and he enjoys the process of getting people started on their solar or energy storage journey and putting them together with an HES Solar Energy Consultant. Mr. Merced has plans to grow the Inside Sales department and has his sights set on breaking into new territories. Mr. Merced loves to learn and share his knowledge of solar. He takes special satisfaction in not only saving customers money on their energy costs but also increasing the value of their home. When he’s not at work Mr. Merced can be found spending time with friends and family, which often includes shopping or cheering on his New York teams: the Yankees, the Giants, and the Rangers.

Spencer Holt

Director of Commercial Sales / Business Development

Mr. Holt developed a successful marketing and sales career before joining HES Solar in 2018 to lead the company’s Commercial Sales and Business Development. His knowledge, relationships and innovative approaches have been instrumental components in the strong and steady growth of HES Solar 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 Solar through improving the financial position of local businesses while also expanding the renewable energy footprint in the state. He takes pride in HES Solar’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.

Nick Liles

Director of Internal Sales

Mr. Liles grew up in North Carolina before his family moved to California when he was 12 years old. Mr. Liles joined HES Solar in the summer of June, 2023 with a decade of solar experience that covered everything from lead generation, to inside sales, to development and training. Mr. Liles initially took an interest in the California solar industry due to its impressive growth; over his decade in the business he has found the most gratifying aspect to be delivering solar’s energy cost savings to businesses and people. At HES Solar, Mr. Liles’ focus is on growing the best customer-focused commercial solar division in California. When Mr. Liles and his wife are not on local adventures with their dogs, they enjoy visiting the national parks and local amusement parks.

Yazan Ziadeh

Commercial 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 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.



Originally from a suburb of Cleveland, Ohio, Mr. Cosmo moved to California in 2011 for college and never wanted to leave. Mr. Cosmo joined HES Solar’s Commercial division in 2021 with five years of previous solar industry experience as an engineer and project manager, and holds a Mechanical Engineering degree from Cal Poly San Luis Obisbo. His education and experience inform him in solar and energy storage analysis, technical sales, and business development strategies. His goal is to facilitate solar growth while improving clients’ bottom line, boosting sustainable development, and encouraging decarbonization through infrastructure investment. Mr. Cosmo is a LEED Green Associate and holds an EIT (Engineer in Training) license. He leads a minimalist lifestyle and can often be found with a surfboard under his feet or a backpack over his shoulders.

Mike Collins

Chief Electrical, Commercial

Mr. Collins grew up primarily in San Francisco and in other areas of the United States, and as well he and his family lived in Australia for two years while he was a child. The family eventually settled in America’s Finest City and Mr. Collins chose to pursue a career as an electrician. He carries a certificate in embedded microcontrollers from the UCSD program, carried a C-10 Contractors License for six years, and worked with Martin Learn as an electrician prior to Mr. Learn founding what is now HES Solar in 2001. Once Mr. Learn had established the company and had the opportunity, he hired back Mr. Collins, who was happy to join the young company back in the early 2000s. Mr. Collins has been with HES Solar ever since, and holds the designation as being the HES Solar employee who has been with the company the longest. Mr. Collins applies most of his design and build expertise to challenging commercial projects but also gets called up for unique service or residential projects that can benefit from his vast experience, knowledge and understanding. When not working with electronics, Mr. Collins does his own car repair and micro brews small batches of beer.

Brett Reischman

Commercial 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 Solar in 2021 where his innovation further bolsters the continued growth and efficiency improvements of HES Solar Commercial. As testament to Mr. Reischman’s penchant to build, one of his hobbies is blacksmithing.

Blake Miller

Commercial Project Manager

Mr. Miller grew up in Arizona but spent summers working in San Diego. He started with HES Solar in 2018 and in 2019 moved full-time to San Diego, bringing along his Bachelor’s degree in Business with an emphasis in Marketing from Arizona State. Starting at the top, so to speak, Mr. Miller’s time at HES began in the field with commercial system solar array installs along with assisting in system design. Shortly thereafter Mr. Miller took on commercial design responsibilities and from there transitioned to Assistant Commercial Project Manager, at which point he earned a Project Management Professional Certificate from the University of San Diego. His knowledge, approach, and focus on providing the best quality systems soon advanced Mr. Miller to his current role as Commercial Project Manager where he oversees every step from inception to completion of commercial solar production, storage, and charging projects.

Brad Carbiener

Designer, Commercial

After growing up in Florida, Texas, and Idaho, Mr. Carbiener moved to Arizona to attend Arizona State University where he earned a Bachelor of Arts in Spanish Linguistics. He has called The Grand Canyon State home ever since. He worked as a site surveyor manager for another solar company and then spent a few years working for Amazon in various roles. Mr. Carbiener joined HES Solar in 2017 as a part-time designer for residential solar systems. He appreciates and took advantage of HES Solar’s policy of giving employees paths to grow their careers; Mr. Carbiener moved to full time, then jumped from the Residential division to the Commercial division in 2019. He now designs large commercial solar and solar + storage systems. When not designing commercial energy systems, Mr. Carbiener enjoys spending time with his wife and two children and still makes time to travel. His favorite destination so far has been Costa Rica but his wanderlust is always looking for the next adventure.

Charles Nguyen

Project 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 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.

Bernie Silva

Commercial 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 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

Assistant Commercial Construction Manager

Mr. Hickey is a San Diego native who joined HES Solar in 2019 with three years of ABC Electrical Trade School education and an OSHA 10 certification. He started at HES Solar 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 new role as Assistant Commercial Construction Manager, Mr. Hickey helps manage five field crews and their job sites. He has set the goal of receiving his J-card before the end of 2023. When not helping HES Solar with its incredible growth since joining the team, you can find Mr. Hickey riding his dirt bike or camping.

Braulio Aguilera

Project Manager, Commercial

Mr. Aguilera grew up in San Diego and came to HES Solar in 2023 with nearly fifteen years of supervisor experience at UPS as well as eight years of solar experience. From his solar experience in the field and as an Operations Manager, combined with the efficiency required in his UPS role, Mr. Aguilera is an expert at project planning and precision execution. He enjoys the challenge that each unique solar project brings and loves to see how the pieces go together best to prevent delays for the customer or the installation crew. Mr. Aguilera was excited to find the positive and professional environment at HES Solar and now adds to the team’s success with his winning attitude. When not ensuring solar projects are running smoothly you can find Mr. Aguilera hiking, cycling, or playing paintball or board games; he has a collection of over 200 board games.

alejandro guerena

Sales Engineer

Mr. Guerena grew up in Mexico and moved to San Diego in 2008 and now lives in Oceanside. He joined HES Solar in 2022 and brought with him a Bachelor of Engineering degree in Renewable Energies from UTT/SDSU Extension an extraordinary list of certifications and qualifications including the following: OSHA 30, LG Chem and Resu Prime Certified Installer, Enphase PV Designer and Installer, Helioscope Commercial Pro Designer, and more. Mr. Guerena’s solar and energy experience includes solar design from residential systems up to megawatt-sized solar farms; he also has experience designing and installing transmission and distribution lines from 480V to high tension. He takes particular satisfaction in helping keep California a leader in solar implementation. Mr. Guerena enjoys watching the Padres as well as playing poker or trading card games. Fun fact: he is planning a trip to Japan to attend a trading card convention.

Shannon Ricaud

Human Resources Manager

Ms Ricaud moved to California in her teens and joined the HES Solar team in 2018. She learned the company and industry and was quick to react and adapt when the Covid-19 shutdowns were enacted then continuously adjusted. Ms. Ricaud became the ‘point person’ for many of the departments and her efforts helped not only facilitate the company’s fast recovery but also support its growth after the reductions to the restrictions. Ms. Ricaud enjoys the employees and takes pride in the rapid growth of HES Solar. She holds a degree in art and has a soft place in her heart for dogs.

Karina Garcia

Purchasing Manager

Ms. Garcia came to HES Solar in 2023 with two years of experience in the solar industry. Born in Mexico, she moved to Oceanside, California at the age of five. Ms. Garcia sought a career in the solar industry because she wanted to make a positive impact. She enjoys the fast pace of her role and the continuing evolution of the solar industry in general. Her position at HES Solar challenged her to create and implement a purchasing strategy that produced savings that would be reflected in lower project costs to HES Solar customers. When she’s not looking for cost efficiencies at HES Solar Ms. Garcia is pursuing her love of travel, local and exotic, or working on creative endeavors such as painting and ceramics.

Pete Peterson

Marketing Manager

Mr. Peterson is a California native with a degree from UC Santa Barbara who enjoys writing, photography, and videography. After over a decade in enthusiast media where he rose to the title of Editor-in-Chief of a print magazine, Mr. Peterson transitioned into marketing content creation and joined HES Solar in 2020 with a year of solar industry experience under his belt. Mr. Peterson hopes to shine a light on the great employees and quality works of HES Solar to Southern California residents through educational, informational, and occasionally lighthearted images and words. When Mr. Peterson isn’t creating marketing content, he enjoys writing novels and reading.


We are a San Diego-based, family-owned solar company. We have been an energy innovator since 2001 and can handle projects from small, rooftop solar panel additions to large-scale commercial microgrid systems. 

Our website is a great resource for your solar research. We’d also love to speak with you to answer any specific questions you have about your project. Click here to be contacted by an HES Solar representative, or simply dial us at 619-692-2015. We don’t use call centers so you’ll speak with a full-time HES Solar employee in California.

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