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.
Full Branch Contact Info
179 Granada Dr. #2
San Luis Obispo, CA 93401
Mon - Fri 9:00AM - 6:00PM
Customer Stories



San Luis Obispo Representatives
Carlos Carrasco
Sales Manager
Carlos is the sales/branch manager for Ilum Solar and has more than 10 years of experience in the solar industry. Starting in installation and later moving into the sales department, Carlos is your go-to guy for any questions related to energy-saving solutions. Carlos was born and raised on the central coast, and enjoys spending time with his wife and three children at the beach.
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Electrical Engineering
Residential Solar
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..
Commercial Solar
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.
Battery Storage
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.
Ilum Solar’s
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.