Professional Solar Panel Installation You Can Trust
Switching to solar energy has never been easier. At Mario Castillo Electric, we provide professional solar panel installation services for both homes and businesses, helping you lower energy costs, reduce your carbon footprint, and take control of your power.
From consultation and design to permits, installation, and system activation, our licensed team handles every step of the solar installation process. We also offer battery storage solutions and ongoing maintenance to keep your system performing at its best. Whether you want to maximize savings at home or improve sustainability for your business, Mario Castillo Electric delivers trusted solar energy solutions tailored to your needs.
Power Your Home or Business with Clean Energy
Investing in solar panel installation is one of the smartest ways to cut energy costs and embrace sustainability. By generating your own clean, renewable energy, you’ll protect yourself from rising utility bills while reducing your impact on the environment.
With Mario Castillo Electric, you can:
- Lower monthly electricity costs with efficient solar panels
- Reduce dependence on the utility grid with renewable energy
- Increase property value with professional solar installation
- Take advantage of tax credits, rebates, and solar incentives
- Enjoy long-term reliability backed by expert electricians
We design and install solar energy systems that deliver dependable performance for both residential and commercial properties. With decades of electrical expertise, our team ensures every installation is safe, efficient, and built to last.
Expert Technicians
Local & Family-Owned Company
Free Financing Options
One-Year Warranty on Services
100% Customer Satisfaction Guaranteed
Why Go Solar with Mario Castillo Electric?
Making the switch to solar offers more than just savings. With professional solar panel installation, you gain energy independence, long-term reliability, and the peace of mind that comes from investing in a clean energy solution designed for the future.
- Save money by generating your own solar energy
- Reduce your carbon footprint with clean, renewable power
- Increase your property’s value with a modern energy upgrade
- Protect against rising utility rates and grid outages
- Add battery storage for reliable backup power when you need it most
- Access tax credits, rebates, and financing options to make solar affordable
What to Expect from Your Solar Panel Installation
At Mario Castillo Electric, we make the solar installation process simple and stress-free. Our team handles everything from planning to final activation, ensuring your system is safe, efficient, and built to last.
1. Consultation & Site Evaluation
We assess your property’s energy needs, roof space, and goals for solar.
2. Custom Design
Our experts create a tailored solar energy system to maximize performance.
3. Permits & Paperwork
We take care of approvals, utility requirements, and all necessary permits.
4. Professional Installation
Licensed electricians install your solar panels and system components.
5. Inspection & Testing
We ensure everything meets safety and performance standards.
6. System Activation
Once approved, your system is connected and ready to generate clean energy.
Residential Solar Panel Installation
Homeowners across California are turning to residential solar panel installation as a smart way to lower energy bills and gain energy independence. By producing your own renewable power, you can protect your household from rising utility costs and enjoy clean, reliable energy every day.
At Mario Castillo Electric, we design and install solar energy systems for homes that fit your roof, budget, and lifestyle. From maximizing efficiency with proper placement to offering options like battery storage and net metering, our team makes it easy to get the most out of your investment.
Commercial Solar Panel Installation
For business owners, commercial solar panel installation is an investment that delivers long-term financial and environmental benefits. Generating your own renewable energy can significantly lower operating costs, protect against unpredictable utility rates, and strengthen your company’s commitment to sustainability. With our professional installation and support, you can power your business with confidence.
Trust Our Experienced Solar Installers
When it comes to solar panel installation, choosing the right company is just as important as choosing the right equipment. Mario Castillo Electric is a licensed, bonded, and insured contractor with decades of electrical expertise and a proven track record in both residential and commercial solar projects. As a family-owned business, we are committed to delivering reliable systems, seamless installations, and complete customer satisfaction. From design and installation to battery storage integration and ongoing solar maintenance, our team provides full-service support you can trust for years to come.
Affordable Solar Installation with Incentives & Financing
One of the biggest advantages of solar panel installation is the variety of financial incentives available to make it more affordable. Homeowners and businesses can take advantage of the federal solar tax credit, local rebates, and utility programs that significantly reduce the overall cost of solar panels.
At Mario Castillo Electric, we guide you through your options for solar panel financing so you can enjoy the benefits of renewable energy without the stress of upfront costs. By combining incentives with flexible payment plans, we make it easier than ever to switch to clean, reliable solar power.
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 About Solar Panel Installation
Thinking about switching to solar or maintaining an existing system? We’ve answered some of the most common questions homeowners and business owners have about solar panel installation, costs, and long-term performance.
The cost of solar panels varies depending on system size, property type, and energy needs. With available incentives and solar panel financing, Mario Castillo Electric makes it easy to find a solution that fits your budget.
Most installations are completed within a few days once permits and approvals are in place. Our team manages the entire solar installation process to ensure everything is on schedule and stress-free.
If your previous installer is no longer in operation, Mario Castillo Electric can step in to provide maintenance, repairs, or upgrades. We service existing solar energy systems even if we didn’t complete the initial installation.
Yes. Our team has experience with a wide range of solar panels and inverters, and we can service or expand most existing systems.
Absolutely. Whether you’re looking for solar maintenance, troubleshooting, or expanding your system, you can rely on our licensed experts even if you originally went with another provider.
Yes. Solar panels generate electricity even when it’s cloudy, though output may be slightly lower compared to sunny days.
Solar panels require very little maintenance, but periodic cleaning and system checks help ensure maximum performance. Mario Castillo Electric offers solar maintenance services to keep your system running efficiently.
Check out our Blog
How to Maximize Your Electrical Savings with Mario Castillo Electric
May 13, 2025 | Electric/EV Car Charger, Residential Electric, Solar Energy
As California electricity rates are projected to rise through 2026, smart energy planning has never been more important. At Mario...
Read MoreThe Top 5 Electrical Upgrades for Your Home
Jan 12, 2025 | Electric/EV Car Charger, Panel Upgrade, Residential Electric, Smart Home, Solar Energy
Your home’s electrical system plays a crucial role in keeping your space safe, efficient, and functional. Whether you’re looking to...
Read MoreFrom Wiring to Lighting: How Our Electrical Services Transform Your Home
Dec 12, 2024 | Ceiling Fan, Electric/EV Car Charger, Electrical Rewire, Exhaust Fans, Lighting, Outlets, Panel Upgrade, Residential Electric, Smart Home, Solar Energy, Troubleshooting
Your home’s electrical system does more than just keep the lights on—it plays a crucial role in your safety, comfort,...
Read More
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