Mario Castillo Electric

Mario Castillo Electric Licensed & insured team serving SoCal with expert residential & commercial electrical services for 20 years. Learn more at mariocastilloelectric.com

Today, we lead the way in solar & clean energy solutions, helping homeowners & businesses install, maintain, and upgrade systems built to last. Licensed and insured in Long Beach, LA County, Orange County Communities and Surrounding Areas

At Mario Castillo Electric, we do more than flip the switch — we keep your power running for the long haul. For over 20 years, our licensed and insured team h

as served Southern California with expert residential, commercial, and industrial electrical services. Today, we’re also leading the way in solar and clean energy solutions — helping homeowners and businesses install, maintain, and upgrade systems built to last. Whether you need a new solar installation, troubleshooting on an inherited system, battery storage integration, or ongoing maintenance, we’ve got you covered. We’re here long after the install is done, making sure your power is reliable, efficient, and ready for the future. What we offer:
- Residential, commercial & industrial electrical services
- Solar panel installation, upgrades & troubleshooting
- Battery storage integration (Tesla Powerwall, Enphase & more)
- Smart home & energy automation
- Long-term maintenance & system monitoring

At Mario Castillo Electric, we believe reliable power shouldn’t come with headaches. That’s why our customers trust us to deliver clear communication, expert solutions, and dependable service — every time. Ready to power your home or business with confidence?

05/26/2026

Your electrical contractor shouldn’t only show up when something breaks. At Mario Castillo Electric, we work alongside businesses and property managers as a long-term partner, helping you plan ahead, reduce downtime, and make informed decisions about your electrical and energy systems.

From maintenance to upgrades to clean energy solutions, we’re here to support your operation at every stage.

05/21/2026

We're Hiring Electricians!

Mario Castillo Electric is growing. We're hiring Service Electricians, Journeymen & a Master Electrician. Family-owned, Long Beach-based. Competitive pay, full benefits & room to grow.

Apply today. Link in bio.

05/19/2026

The difference between a small electrical issue and a major failure is often timing.

With a structured maintenance program, your systems are regularly inspected, tested, and monitored to catch problems before they impact your business. From compliance to performance, it’s about staying ahead, not reacting.

Mario Castillo Electric works with businesses and property managers to build maintenance plans that reduce risk and support long-term reliability.

05/12/2026

Solar is about more than saving on energy bills. It’s about building a more resilient, cost-controlled operation.

For commercial properties, a well-designed solar power system paired with ongoing support can reduce operating expenses, protect against rising utility rates, and keep your business running even when the grid is unpredictable.

Mario Castillo Electric helps businesses take a long-term approach to energy by designing, installing, and maintaining systems that perform.

05/07/2026

Together, we power more than circuits. We power results!

At Mario Castillo Electric, every job starts with a team that’s aligned, skilled, and committed to getting it done right. Residential or commercial, big or small, we bring the same dedication to every project… and a little fun along the way.

05/05/2026

Waiting until something breaks is the most expensive way to manage your electrical system. For businesses and property managers, electrical issues lead to downtime, safety risks, and unexpected costs.

A proactive maintenance program helps identify problems early, protect your operations, and keep your property compliant!

04/21/2026

Your electrical panels are the backbone of your facility’s power system. When panels are outdated, overloaded, or nearing capacity, it can affect performance, safety, and reliability.

Mario Castillo Electric offers comprehensive commercial panel services, including upgrades, replacements, and capacity evaluations, to help businesses maintain safe, code‑compliant electrical infrastructure.

https://mariocastilloelectric.com/services/commercial-panel-services/

04/16/2026

The morning roll-out!
Who's heading to a job site and who's heading to grab a donut? 🍩 They are all probably doing both. 😂

04/05/2026

Happy Easter from Mario Castillo Electric!

We hope the holiday brings time to relax, recharge, and enjoy the company of family and friends. Our team is grateful to be part of a community that continues to trust us with their homes, businesses, and electrical needs.

04/03/2026

Electrical issues don’t wait for a convenient time, but with the right maintenance plan, you have one less thing to worry about.

Mario Castillo Electric offers tiered Commercial Electrical Maintenance Programs designed to fit your facility’s needs, whether you’re looking for routine inspections or more comprehensive, ongoing support. It’s a proactive approach that helps prevent downtime, extend the life of your systems, and keep your business running without interruption.

Reliable power starts with a plan and a team that’s ready when you need them.

Learn more:
https://mariocastilloelectric.com/services/commercial-electrical-maintenance-program/

Address

444 West Ocean Boulevard Suite 800
Long Beach, CA
90802

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+15622734660

Website

https://www.cslb.ca.gov/onlineservices/checklicenseII/LicenseDetail.aspx?LicNum=1043

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