Ilum Solar is San Luis Obispo's Most Experienced
Solar Power Installer
We have helped thousands of homeowners and businesses throughout the region reduce their energy costs with solar.
San Luis Obispo Representative
John Espinoza is a Cal Poly Alumni that has called the Central Coast home since 2004. John has worked in sales and business management in San Luis Obispo for 11 years. In his free time, John enjoys travel, sports and outdoor activities with his close friends and family.
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we have a team of experts
Our engineering and installation team can design and install a solar power system that delivers the best possible energy savings for your home, particularly during San Luis Obispo’s sweltering summer months..
We offer reliable solar solutions
We understand the specific needs of businesses and industrial operations of all scales, and can develop custom solar solutions that will deliver significant energy savings for decades.
store excess energy to increase your savings
Our battery storage solutions maximize the energy savings offered by residential and commercial solar power systems, and give you greater control over how and when you consume electricity from the grid.
engineers, installers, and customer service personnel are here to serve San Luis Obispo.
Founded and owned by business partners Ben Hernstedt and Robert Dean, through their and our team’s shared expertise, Ilum Solar has helped thousands of Central Valley homeowners and business owners realize the energy savings possible with solar power. For those seeking a premier-quality solution to their renewable energy needs, Ilum Solar is the right choice.
Contact us to start saving with solar!
Frequently Asked Questions
We carry a C-46 Solar Contractors License in California, and a C-2 Electrical Contractors License in the state of Nevada. In addition, Ben Hernstedt has more than a decade of combined experience in solar engineering and solar consultation, and has managed more than 1,000 residential and commercial projects. Meanwhile, co-founder Robert Dean has 7 years of experience developing solar power systems, has worked with permitting departments throughout California, and designed more than 10,000 code-compliant solar systems of all scales and complexities.
We serve all of San Luis Obispo County as well as many parts of Santa Barbara and Monterey County.