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Who We Are


Solar Gain Inc

Your Energy Needs, Goals and Interests are our Priority

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Who We Are


Solar Gain Inc

Your Energy Needs, Goals and Interests are our Priority

Who We Are

Our mission is to make the world a better place, one solar panel system at a time. We are energy pioneers and see each system we design and install as a way to making our clients’ lives better and move society as a whole in a positive direction. 

Solar Gain’s top priority is and always will be our customers. We pursue your needs, goals and interests above all else, and our process is specifically designed to deliver a hassle-free, enjoyable and affordable solar power experience.


Solar Gain Inc. is a leader in design, engineering, and the implementation of high-performance, integrated solar energy, storage, and smart technology products. Our process starts with you - the customer - and an in-depth analysis of your facility and energy needs, along with a review of your financial goals. Not only do we help you choose the best financing option for your business, we ensure you receive the maximum available incentives across local, state, and federal levels. Then, our engineers welcome your design challenges and meet them with the industry’s best technologies and product warranties while providing the highest return on investment.

What We Do


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Team


Meet the Solar Gain Team

Team


Meet the Solar Gain Team

Ken Riley, President   Ken is a registered Civil Engineer and has worked in the construction industry for over 30 years with the Kiewit Companies. He has held executive oversight for multiple business units and estimated, negotiated, and executed numerous large projects ranging from $250 million to $1+ billion construction value. These include roads, bridges, dams, rail projects, and treatment and power plants. Notable projects include the Carlsbad Desalination Plant, the Pine Tree Wind Farm commissioned by the LA Department of Water and Power in the Tehachapi Mountains, the Los Angeles Freeway 405 infrastructure repair project, a high-stakes project also known as Carmegeddon, and the Benicia-Martinez Bridge in Solano County, California. In 2016 he became involved in the solar industry and, through a mutual friend, met Roman Black. Solar Gain had entered the California market and Ken and Roman saw an opportunity to form a partnership and help Solar Gain take on the challenges that come with growth. Ken is a past chair and active board member of the Tahoe Prosperity Center and, when he’s not in Tucson, spends his time backpacking, skiing, and enjoying his home and family in Lake Tahoe.

Ken Riley, President

Ken is a registered Civil Engineer and has worked in the construction industry for over 30 years with the Kiewit Companies. He has held executive oversight for multiple business units and estimated, negotiated, and executed numerous large projects ranging from $250 million to $1+ billion construction value. These include roads, bridges, dams, rail projects, and treatment and power plants. Notable projects include the Carlsbad Desalination Plant, the Pine Tree Wind Farm commissioned by the LA Department of Water and Power in the Tehachapi Mountains, the Los Angeles Freeway 405 infrastructure repair project, a high-stakes project also known as Carmegeddon, and the Benicia-Martinez Bridge in Solano County, California. In 2016 he became involved in the solar industry and, through a mutual friend, met Roman Black. Solar Gain had entered the California market and Ken and Roman saw an opportunity to form a partnership and help Solar Gain take on the challenges that come with growth. Ken is a past chair and active board member of the Tahoe Prosperity Center and, when he’s not in Tucson, spends his time backpacking, skiing, and enjoying his home and family in Lake Tahoe.

Roman Black, Vice President   Roman holds significant experience in commercial solar project development and sales, and is committed to serving our clients in the expanding California and Arizona markets with continued excellence in his role as VP of Sales & Marketing. Roman earned his degree in Finance from the University of Arizona, and spent several years in Costa Rica expanding his knowledge and skill set in sustainable industries. While in Costa Rica, he served as project manager for the construction of custom homes that integrated LED lighting, rainwater harvesting, black water recycling, and solar and wind power. After returning to the United States, Roman took on responsibility for leading Solar Gain and helmed the company for eight years as President during periods of tremendous growth.  At Solar Gain he builds the best possible financing options through strong funder relationships and aggressive pursuit of financial benefits and incentives for our clients. Roman is a founding board member of the Southern Arizona Green Chamber of Commerce.

Roman Black, Vice President

Roman holds significant experience in commercial solar project development and sales, and is committed to serving our clients in the expanding California and Arizona markets with continued excellence in his role as VP of Sales & Marketing. Roman earned his degree in Finance from the University of Arizona, and spent several years in Costa Rica expanding his knowledge and skill set in sustainable industries. While in Costa Rica, he served as project manager for the construction of custom homes that integrated LED lighting, rainwater harvesting, black water recycling, and solar and wind power. After returning to the United States, Roman took on responsibility for leading Solar Gain and helmed the company for eight years as President during periods of tremendous growth.

At Solar Gain he builds the best possible financing options through strong funder relationships and aggressive pursuit of financial benefits and incentives for our clients. Roman is a founding board member of the Southern Arizona Green Chamber of Commerce.

Ron Leuzinger, Chief Financial Officer   Ron came to Solar Gain in early 2017 with nearly 30 years of leadership experience in various finance and operations management roles. Upon graduating from the University of Wisconsin with degrees in Accounting & Finance, he began his career in public accounting with Ernst & Young where he earned his CPA certification. Ron has led process improvement initiatives in multiple manufacturing, engineering design, and project management enterprises in the water treatment and aerospace sectors. Most recently, Ron spent 16 years in the medical device industry as part of Smiths Medical and Teleflex, focused on supply chain strategy and product cost optimization.  While Ron now makes his home in Tucson and enjoys motorcycling, biking, and hiking in his spare time, he remains faithful to all things Wisconsin – including Packers, Badgers, and cheese.

Ron Leuzinger, Chief Financial Officer

Ron came to Solar Gain in early 2017 with nearly 30 years of leadership experience in various finance and operations management roles. Upon graduating from the University of Wisconsin with degrees in Accounting & Finance, he began his career in public accounting with Ernst & Young where he earned his CPA certification. Ron has led process improvement initiatives in multiple manufacturing, engineering design, and project management enterprises in the water treatment and aerospace sectors. Most recently, Ron spent 16 years in the medical device industry as part of Smiths Medical and Teleflex, focused on supply chain strategy and product cost optimization.

While Ron now makes his home in Tucson and enjoys motorcycling, biking, and hiking in his spare time, he remains faithful to all things Wisconsin – including Packers, Badgers, and cheese.

Tim Graunke, Project Development   Tim was born and raised in Tucson, AZ and is the oldest of 5 siblings. He went to Salpointe High School, and graduated from the University of Arizona in 2007 with a Bachelor of Economics. In early 2008, Tim moved to Honolulu and started a career in solar. Early experience as a project and construction manager led to a strong understanding of what it takes to complete projects on schedule and within budget. He soon became Lead Commercial Project Manager for one of Hawaii's top companies in 2011. Later, he returned to Tucson and started working with Solar Gain in late 2015 developing projects pre- & post-contract execution.

Tim Graunke, Project Development

Tim was born and raised in Tucson, AZ and is the oldest of 5 siblings. He went to Salpointe High School, and graduated from the University of Arizona in 2007 with a Bachelor of Economics. In early 2008, Tim moved to Honolulu and started a career in solar. Early experience as a project and construction manager led to a strong understanding of what it takes to complete projects on schedule and within budget. He soon became Lead Commercial Project Manager for one of Hawaii's top companies in 2011. Later, he returned to Tucson and started working with Solar Gain in late 2015 developing projects pre- & post-contract execution.

Jeremiah Mosij, Marketing & Sales Director   Jeremiah has been working in the sustainability sector for over seven years. His father is a general contractor, so construction has been a way of life at a very young age. Before finding his home at Solar Gain, Jeremiah was certified as a Rainwater harvesting practitioner under the instruction of Brad Lancaster and Lincoln Perino. When Jeremiah is not out saving the world, you can find him playing in a local Spaghetti Western band called Hey, Bucko! in downtown Tucson.

Jeremiah Mosij, Marketing & Sales Director

Jeremiah has been working in the sustainability sector for over seven years. His father is a general contractor, so construction has been a way of life at a very young age. Before finding his home at Solar Gain, Jeremiah was certified as a Rainwater harvesting practitioner under the instruction of Brad Lancaster and Lincoln Perino. When Jeremiah is not out saving the world, you can find him playing in a local Spaghetti Western band called Hey, Bucko! in downtown Tucson.

Brian Smith, Commercial Superintendent   Brian is a NABCEP-certified PV installation professional with more than six years of experience in both residential and commercial PV projects throughout southern Arizona. With a bachelor’s degree in Mechanical Engineering and additional photovoltaic training, he uses his advanced education to oversee the multiple facets of complex photovoltaic installation projects. Brian is also involved in Solar Guild, a local nonprofit that develops solar projects that benefit the community. Through Solar Guild he has led numerous projects, including the Biosphere 2 and Catalina State Park.

Brian Smith, Commercial Superintendent

Brian is a NABCEP-certified PV installation professional with more than six years of experience in both residential and commercial PV projects throughout southern Arizona. With a bachelor’s degree in Mechanical Engineering and additional photovoltaic training, he uses his advanced education to oversee the multiple facets of complex photovoltaic installation projects. Brian is also involved in Solar Guild, a local nonprofit that develops solar projects that benefit the community. Through Solar Guild he has led numerous projects, including the Biosphere 2 and Catalina State Park.

John Reusche, Project Development and Management   John, a licensed general contractor, specializes in commercial steel buildings, solar arrays and medical tenant improvements. A graduate of U.C. Berkeley, John is passionate about Solar Gain and its goals of creating a sustainable cleaner environment for future generations. A firm believer in giving back to his local community, John has served as Past President of Stockton Rotary, the Stockton Asparagus Festival and the Engineers Club of Stockton. John is an avid outdoors man and loves working with youth and has been the Director of the Rotary Youth Leadership Awards camp, held annually for more than 20 years. John is the dedicated father of two college students and loves taking trips with his wife, Sherri.

John Reusche, Project Development and Management

John, a licensed general contractor, specializes in commercial steel buildings, solar arrays and medical tenant improvements. A graduate of U.C. Berkeley, John is passionate about Solar Gain and its goals of creating a sustainable cleaner environment for future generations. A firm believer in giving back to his local community, John has served as Past President of Stockton Rotary, the Stockton Asparagus Festival and the Engineers Club of Stockton. John is an avid outdoors man and loves working with youth and has been the Director of the Rotary Youth Leadership Awards camp, held annually for more than 20 years. John is the dedicated father of two college students and loves taking trips with his wife, Sherri.

Brett Lange, Electrical Superintendent   Brett is an electrical superintendent/ lighting specialist. He is a native Tucson resident, proud family man, Scouter, and father of 2. He has 30 years of electrical experience in the alternative energy and electrical fields including years of experience in the lighting design field.

Brett Lange, Electrical Superintendent

Brett is an electrical superintendent/ lighting specialist. He is a native Tucson resident, proud family man, Scouter, and father of 2. He has 30 years of electrical experience in the alternative energy and electrical fields including years of experience in the lighting design field.

Sol Hassler, Lead Commercial Designer   Sol has 8 years of solar installation and design experience. He holds an Associate’s degree and is NABCEP Solar Electrical Installation-certified. Sol has made Tucson his home for the last ten years and has a deep fascination with sustainable design. He always has several active projects outside of work, the subject matter of which vary greatly.

Sol Hassler, Lead Commercial Designer

Sol has 8 years of solar installation and design experience. He holds an Associate’s degree and is NABCEP Solar Electrical Installation-certified. Sol has made Tucson his home for the last ten years and has a deep fascination with sustainable design. He always has several active projects outside of work, the subject matter of which vary greatly.

Will Lawton, Warehouse Manager   Born and raised in Tucson, Arizona, Will understands the importance of conserving natural resources. Will majored in Natural Resources Conservation and Management at the University of Arizona after it became clear that his work would focus on conservation. Upon graduating, he came across the opportunity to work for a solar company, which was a great way to get into conserving precious natural resources, while also being a part of an expanding effort to develop and produce renewable energy.

Will Lawton, Warehouse Manager

Born and raised in Tucson, Arizona, Will understands the importance of conserving natural resources. Will majored in Natural Resources Conservation and Management at the University of Arizona after it became clear that his work would focus on conservation. Upon graduating, he came across the opportunity to work for a solar company, which was a great way to get into conserving precious natural resources, while also being a part of an expanding effort to develop and produce renewable energy.

Santino “Sonny” Perez, Lead Technician   Sonny was born and raised in Tucson, Arizona, and has been installing P.V. Solar for 4 ½ years. Since he joined Solar Gain in 2014, he has taken on added responsibility and supervisory roles, rising to the Lead Technician role. And he loves his job! Says Sonny: “I love working for this company, and couldn’t ask for better co-workers, and the bosses are great. It’s huge to be with this company as we continue to grow. Thank You, Solar Gain!”

Santino “Sonny” Perez, Lead Technician

Sonny was born and raised in Tucson, Arizona, and has been installing P.V. Solar for 4 ½ years. Since he joined Solar Gain in 2014, he has taken on added responsibility and supervisory roles, rising to the Lead Technician role. And he loves his job! Says Sonny: “I love working for this company, and couldn’t ask for better co-workers, and the bosses are great. It’s huge to be with this company as we continue to grow. Thank You, Solar Gain!”