Mario Castillo Electric - Long Beach & the Surrounding Areas' Trusted Electrician
VISION
To provide exceptional electrical and solar solutions.
MISSION
To deliver dependable, high-quality service to our customers for all electrical and solar projects. We sare committed to being responsive and trustworthy, always offering honest advice and innovative solutions.

Our Core Values
Customer-Centric Service
We deeply care about our customers and strive to understand and meet their needs. Our goal is 100% customer satisfaction, and we pledge to exceed expectations in every project, whether electrical or solar.
Dependability
We are dedicated to delivering consistent, accurate, and reliable electrical and solar services, ensuring our solutions are always up to par.
Quality Service
By combining our extensive professional experience and commitment, we save our clients time and money, providing top-notch service in both traditional electrical work and modern solar installations.
Trustworthiness
We are friendly, knowledgeable, and transparent, offering honest advice and building trust through integrity in all our dealings.
Responsiveness
We prioritize swift and positive responses to customer requests, feedback, questions, and issues, utilizing state-of-the-art technology to enhance communication and ensure exceptional customer service.
Safety
The safety of our clients and technicians is paramount. Our team adheres to strict safety protocols, wearing appropriate protective equipment and practicing responsible measures on every job site, be it electrical or solar.

Why Long Beach & Surrounding Areas' Trusts Mario Castillo Electric
Long Beach & the surrounding areas like Carson, Cerritos and more - have come to rely on Mario Castillo Electric for all of its home and business electrical and solar needs. Mario Castillo Electric is a licensed, bonded, and insured local electrician in Long Beach whose primary goal is to provide reliable and quality service. We are also accredited by the Better Business Bureau (BBB) with an A+ rating. We are also an MBE, certified by the Southern California Minority Supplier Development Council (SCMSDC). We offer expertise in troubleshooting, installation, upgrades and maintenance of residential and commercial wiring systems as well as full-service solar solutions including panels and batteries.
In addition to top-of-the-line services we are known for our excellent customer care and fast response times. On top of this we offer competitive rates; making us the electrical and solar service provider of choice among locals in Long Beach. With years of experience and commitment to complete customer satisfaction, Long Beach and the surrounding areas trusts Mario Castillo Electric with their electrical and solar needs.
Why Should You Choose Mario Castillo Electric?
- Locally Owned - When you call us, Long Beach Locals answer the phones, not robots or machines.
- Trained Electricians - Our staff is licensed and insured to handle hundreds of electrical issues, big and small.
- Upfront Guaranteed Pricing - You’ll know exactly what you’ll be paying before the work begins.
- Personalized Scheduling - We offer quick response times working around your timetable.
- Stocked Trucks - Our trucks are already stocked with thousands of parts to handle any electrical job for your home or business.
- We are a Tesla Certified Electrician for installing wall connector chargers.
- We offer a wave of renewable solar energy solutions including solar energy consulting, assessment, customized panel and battery setups, and seamless installation.


Warranty on Services
Mario Castillo Electric strives to save you time and money by combining professional experience and exceptional service. Our goal is 100% Customer Satisfaction, which is why we don't leave the job until you're satisfied. And, we offer a 1-year warranty on our electrical services - for your peace of mind. Warranty on parts is limited to the manufacturer's warranty.

Expert Technicians

Local & Family-Owned Company

Free Financing Options

One-Year Warranty on Services

100% Customer Satisfaction Guaranteed
Mario Castillo Electric Specials
Take advantage of our expertise to keep your home's electrical system running smoothly and safely with our money-saving offers. Contact us now to schedule your appointment.
10% Off
Any Job
Trust the experts at Mario Castillo Electric with your next electrical service. Note: offer does not apply to Panel Upgrade or electrical rewire jobs.
*Valid on services $250 or more. Must mention offer during estimate or time of service. Valid for new customers only. Cannot be combined with other offers.
$25 Off
Any Job
Enjoy quality services at affordable prices.
*Valid on services $250 or more. Must mention offer during estimate or time of service. Valid for new customers only. Cannot be combined with other offers.
$200 Off
Panel Upgrade
Keep your home safe from fire hazards with the most up-to-date panel for your home.
*Valid on services $250 or more. Must mention offer during estimate or time of service. Valid for new customers only. Cannot be combined with other offers.
Frequently Asked Questions
Mario Castillo Electric is a trusted name in the electric and solar energy industries, and we pride ourselves on providing exceptional service to our clients. We understand that navigating the world of electric and solar services can be confusing, which is why we’ve compiled a list of common questions. View our resource below for homeowners and businesses.
We accept a variety of payment options including e-checks/ACH payment, Venmo, Zelle, credit cards and checks.
Yes. We offer a great financing option through Wisetack that will allow you to pay month-to-month. Many of our customers have already been approved and used this service successfully. Click here to learn more.
Yes, we will let you know exactly what it will cost to get the job done before we begin the job and we will stick to our pricing.
There are many reasons. When many of these old houses were built, there was no such thing as a building code. Over the years, you may have worked hard to get your home up to code, but you never know what you may have missed. An electric inspection can help you determine if your home’s electrical system is up to code and provide code corrections where needed.
Check out our Blog
Solar Power During Power Outages: What Commercial Businesses Need to Know
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Power outages are more than an inconvenience for businesses. They disrupt operations, interrupt critical systems, impact employee productivity, and can...
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Dec 22, 2025 | Clean Energy, Electric/EV Car Charger, Panel Upgrade, Residential Electric, Solar Energy
Homeowners and business owners across Long Beach, Los Angeles County, and Southern California are running out of time to take...
Read MoreHow to Ensure Your Home Meets the Latest Electrical Codes and Standards
Dec 10, 2025 | Panel Upgrade, Residential Electric
Keeping your home’s electrical system up to code is more than a legal requirement—it’s about safety, efficiency, and protecting your...
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South Bay and Orange County Communities We Serve
LA County / Southbay Cities:
Carson, Cerritos, Compton, Downey, Gardena, Harbor City, Hawaiian Gardens, Lakewood, Lomita, Long Beach, Norwalk, San Pedro, Signal Hill, Palos Verdes Peninsula, Torrance, Wilmington, Lynwood, Lawndale, La Mirada, Paramount, Artesia, Hawthorne, Willowbrook
Orange County Communities:
Rossmoor, Alamitos, Cypress, Seal Beach, Irvine, Buena Park, La Palma, Fullerton, Anaheim, Westminister, Stanton, Midway City, Orange, Garden Grove, Fountain Valley, Costa Mesa, Santa Ana, Newport Beach, Tustin/North Tustin, Huntington Beach, Villa Park, Placentia, Yorba Linda

