Sunrun

- Max. panel efficiency
- 22%
- Panel warranty
- 20 years
- Payment options
- Cash, loan, lease
- BBB rating
- A+
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Sunrun is the best solar company in Carlsbad, California, based on local customer satisfaction ratings. Sunlux stands out for offering quality solar panels and battery storage systems. ShopSolar is our pick for long-term savings on energy bills.
The ConsumerAffairs Research Team compared popular solar companies on customer ratings and reviews, warranties, availability and other factors to select the top picks for this guide. Our picks may be Authorized Partners that compensate us, but this does not affect our evaluations. Read the full methodology for all the details on how we make solar company recommendations.
| Company | Customer rating | Our pick for | Pro install | Max. panel efficiency | Panel warranty | Payment option | In-house financing | BBB rating | |
|---|---|---|---|---|---|---|---|---|---|
![]() Sunrun | Learn More | 4.3
3,932 reviews
3,932 reviews
| Top overall | 22% | 20 years | Cash, loan, lease | No | A+ | |
![]() Sunlux | Get Started | 3.8
580 reviews
580 reviews
| Solar equipment | 19.7% | 25 years | Cash, loan and lease | No | A+ | |
![]() ShopSolar | Learn More | 4.6
219 reviews
219 reviews
| DIY projects | Varies | Varies | Cash, loan | No | A+ |
Solar can be a big investment. This guide highlights companies best equipped to meet most Carlsbad residents’ energy needs.



We started with a list of popular solar energy companies and narrowed it down to those serving Carlsbad. We then ranked them based on the factors that matter most to homeowners:
Local customer satisfaction (65%)
We analyzed reviews from verified customers in the Carlsbad area. Companies with the most recent positive ratings were scored higher.
Price satisfaction (7%)
We evaluated customer feedback on overall cost and value.
Installation satisfaction (7%)
We looked at reviews of the installation process, including professionalism, timeliness and overall quality of the work.
Customer service satisfaction (7%)
We evaluated feedback on how responsive and helpful each company is before, during and after installation.
Payment options (7%)
We considered companies that make paying for solar easier by offering multiple financing and payment options.
Warranties and guarantees (7%)
A long warranty shows confidence in a company’s work. We compared both equipment and workmanship warranties. Our top picks provide 10 to 25 years of coverage.
Pro tip
If your home is near the coast, exposure to salty air can corrode solar equipment. Choosing durable, corrosion-resistant materials and scheduling regular maintenance can help extend the lifespan of your system.
» MORE: Best solar companies in California
Jump into our guides and start learning
ConsumerAffairs has heard from thousands of Californians who have already gone through the solar panel installation process. Here’s what Carlsbad residents should look for when choosing a solar panel installation company.
A typical residential solar panel installation costs $22,608 in Carlsbad.
Jump to insightHigh electricity costs in San Diego County make going solar a good financial decision for a lot of homeowners.
Jump to insightSolar panels are a long-term investment — most systems last 25 years or more. That means choosing the right installer is just as important as choosing the right equipment.
Jump to insightThe federal solar tax credit expires at the end of the year, meaning you only have until Dec. 31, 2025, to install a system and get the 30% solar tax credit.
Jump to insightIn our experience, the best solar companies in California have a few things in common: lots of experience, reliable equipment and transparent contracts. Here are some hiring tips.
Look at reviews on platforms like ConsumerAffairs, Better Business Bureau and solar-specific forums to see real customer experiences. Watch out for these red flags:
Local experience matters too. Companies with a history in the San Diego area understand local incentive programs, utility rules, permitting requirements and how to design systems that perform well in the semi-arid Mediterranean climate.
Look out for solar scammers who falsely claim to be affiliated with a San Diego County or California government agency.
California requires solar contractors to hold a C-46 licensing classification, which you can check through the Contractors State License Board. Also, confirm your installer has:
Get at least three or four quotes to compare different proposed equipment, pricing, financing terms and estimated energy production.
Consider if you need an electric vehicle (EV) charger or solar storage battery. Just the cost of an energy storage battery adds $7,000 to $18,000 to your system’s price tag.
If you don’t understand something about the payment terms, warranty or ongoing services, get clarification. You don’t want to pay hidden fees for monitoring or maintenance if something breaks.
Did you know?
A battery lets you store excess energy generated during the day and use it when your panels aren’t producing. It’s worth considering if California’s net metering rates continue to decline or if your area gets frequent blackouts.
» TIPS: Get the best solar quotes
A typical solar panel installation costs anywhere from $8,005 to $22,871 in California. Prices in Carlsbad are comparable, ranging from $8,091 to $23,117.
Homeowners with solar panels can save $20,000 to $110,000 over 25 years.
System size is a major solar cost factor. The average Carlsbad household needs a system with a capacity of 7.2 kW (kilowatt) to fully offset their electricity costs. Depending on how much energy you and your family use, you might need a smaller or larger one.
Most installers set the price according to the system's wattage, with a typical cost between $2.50 and $5 per watt. In California, the average cost per watt is $2.44.
Average solar panel costs by system size in Carlsbad
| 5 kW | 6 kW | 7 kW | 8 kW | 9 kW | 10 kW | |
|---|---|---|---|---|---|---|
| Before federal tax credit | $12,109 | $14,531 | $16,953 | $19,375 | $21,797 | $24,219 |
With the federal solar investment tax credit expiring at the end of the year, it makes sense to take advantage of as many local solar incentives in California as possible.
For instance, the California Energy Commission (CEC) offers various incentives and rebates, including incentives for solar water heating systems and energy efficiency upgrades, which can be combined with solar installations to maximize overall savings.
Solar panels are generally worth it in California if you like the idea of lowering your monthly utility bills. With good planning, solar can save money and provide energy independence in the long run. On average, Carlsbad homeowners with solar panels can avoid $117,170 in total utility costs over 25 years.
Solar panels typically pay for themselves within 10 years.
There’s also the environmental benefit. The impact of a single house going solar may seem small. But when enough people in a city like Carlsbad go solar, the cumulative reduction in air pollution can be significant.
For a lot of homeowners, the main drawback is the high upfront cost of purchasing and installing the panels and equipment. Assuming an upfront purchase, it takes about 7.32 years to break even (when your savings with solar panels make up for the cost).
Potential roof problems
If your roof is more than 10 years old, consider fixing it before going solar. Installing solar panels on an old roof might mean you have to remove the panels, replace your roof and then reinstall the panels again. This is an expensive and frustrating process.
» SHOULD YOU: Replace your roof before going solar?
Getting solar panels is like buying a car. Most people pay cash, finance or lease. Similar to leasing, a power purchase agreement (PPA) lets you get the benefits of solar without actually owning the equipment.
» SOLAR PANELS: Buy vs. lease
If you’re going solar to save on energy costs, you have to make sure your system is big enough to generate enough power.
On your electric bill, it should say how many kilowatt-hours (kWh) you used last year. Divide that number by 1,200 to estimate your system size in kilowatts (kW). For example, if you used 12,000 kWh last year, you need a 10-kW system.
No. Under California law, solar installations are exempt from property tax reassessments, meaning the value added to your home by solar panels won’t increase your property taxes.
A relatively slanted roof with plenty of unshaded space is best. The worst place to install would be on north-facing roofs, especially if those roofs have a high pitch (very steep). Here are a couple of other questions to ask yourself:
As long as your house is a good candidate for solar, it’s at least worth considering. We suggest using NREL’s PVWatts Calculator to estimate how much electricity a solar panel can produce over a year on your house. Project Sunroof is a reliable online solar savings estimator.
Monocrystalline and polycrystalline are the most common types of solar panels used in residential installations. In general, monocrystalline panels are considered the best bang for your buck. Cheaper solar panels are typically polycrystalline. The key difference is in materials and efficiency: Monocrystalline panels use pure, single silicon crystals, while polycrystalline panels are made from melted silicon fragments, resulting in different efficiency levels.
Solar panel efficiency is a measure of how well a panel makes electricity. Standard efficiency rates range from 19% to 23%, which means 19% to 23% of the sunlight that hits the panels gets converted into electricity. The more efficient the solar panels you buy are, the fewer panels you need. While more efficient panels cost a little more, you save by buying fewer panels.
ConsumerAffairs writers primarily rely on government data, industry experts and original research from other reputable publications to inform their work. Specific sources for this guide include:
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| Company | Customer rating | About | Learn More |
|---|---|---|---|
ShopSolar
| 4.6
219 reviews
| Solar energy solutions. Offers solar energy kits, DIY solar kits and lithium batteries. Small- and large-scale equipment. Online purchasing with shipping to 48 states. Partner installer network. Financing and warranty available. | Read reviews |
Sunrun
| 4.3
3,932 reviews
| Sunrun, in business for 18 years, serves customers in 20 states. It offers residential solar system financing options, including purchase and lease. Consultants customize systems to match each household’s unique energy needs. | Read reviews |
Sunlux
| 3.8
580 reviews
| Sells panels, inverters and batteries. Includes monitoring, full-service installation and 25-year warranty on parts, labor and repairs. Offers purchase, finance, lease and energy prepay options. Available in California and Texas. | Get Started |
SolarGuru Energy
| 5.0
View profile
| SolarGuru Energy specializes in residential solar installations. It offers products from Enphase Energy, FranklinWH, Generac Power Systems, REC Group and Tesla. Based in San Diego. | Read reviews |
Senga Energy
| 3.0
View profile
| Residential and commercial solar energy system installation, roofing and batteries for parts of California. Offers brands like Enphase Energy, LG Electronics and Tesla Powerwall. Free estimates available. | Read reviews |
CSI Electrical Contractors
| No reviews | Commercial and large-scale solar design, installation and maintenance plus battery storage systems. Covers several counties in California, including Los Angeles, Orange, San Francisco, San Diego and Ventura. | |
Current Home
| No reviews | Provides solar services, battery backup and roofing. Offers home improvement services. Reports to have a streamlined installation process with experts who take care of permits and setup. Only available in Florida and California. | |
Gimenergy
| No reviews | Residential and commercial solar panel design and installation plus energy monitoring and storage services. Products from Solaria. Serves all of California. Warranties and financing available. | |
Sunlight Solar Energy
| No reviews | Services include solar energy system installations, battery storage and EV charging station installations across Oregon. Five-year energy production, 10-year workmanship, 25-year inverter and 25-year panel warranties included. | |
SunSolar U.S.
| No reviews | Residential and commercial solar installations, solar carports and solar patio covers in parts of Southern California. Offers a 25-year warranty on solar energy systems. Finance through a loan, lease or power purchase agreement. | |
Western Sun Systems
| No reviews | Specializes in residential solar energy systems. Offers products from SMA. Performs off-grid solar installations. Battery backup systems available. Financing for qualified buyers through loans. | |
Semper Solaris
| 1.0
View profile
| Semper Solaris offers home solar panel installations, energy storage and roofing services. Silfab, Qcells and Enphase equipment available. Based in California. Also available in parts of Texas, Florida and Arizona. | Read reviews |
NRG Clean Power
| No reviews | Works with a variety of solar panel brands. Installs solar batteries and EV charging stations. Provides solar panel cleaning services. Can tackle roof replacement before installing solar panels. Available in California and Texas. | |
Solarium Energy
| No reviews | Solarium Energy specializes in residential, commercial and nonprofit solar installations plus nationwide sales and rebate assistance. Based in San Diego and available throughout California. |