When starting a solar project in Fresno, one of the most important factors that you should consider is the average peak sunlight. 

This figure is different from the number of hours between sunrise and sunset. Rather, it is the number of hours per day that the solar panels receive enough sunlight that they can efficiently convert into electricity. 

The average peak sunlight hours in Fresno changes depending on where you find yourself. Cities closer to the equator experience greater average peak sunlight compared to cities that are further away from the equator. 

It is estimated that the average monthly Global Horizontal Irradiance (GHI) of Fresno is 5.26 kWh/m2/day. This is 12% less than the monthly average Direct Normal Irradiance (DNI). 

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However the best solar companies in Fresno will tilt the panels at the latitude of Fresno to bump the average GHI to 5.91 kWh/m2/day. The best solar company in Fresno should be able to help you to get optimum energy output from your solar system and in extension save more on energy bills. 

The cost of solar panels in Fresno

Data as of June 2021 shows that owning a solar panel in Fresno, CA will cost you $2.89 per watt. Therefore, a solar panel size of 5 kW will cost between $12,282 and $16,618. However, the price can be significantly lower if you factor in the local and state incentives as well as the 26% Federal Investment Tax Credit (ITC). 

It might interest you to know that this cost can vary remarkably among Fresno solar companies. That is why it is always a smart move to compare quotes using a credible solar marketplace Like EnergySage Marketplace. If you do your research properly, you can save as much as 20% compared to when you work with a single installer. 

List of the top 7 solar energy companies in Fresno

The industry average cost of installing a solar panel is $3 per watt. Obviously, it is easy to see that installing solar panels in Fresno is cheaper compared to having a similar installation in other parts of the country. 

We chose our top solar companies in Fresno based on years of experience, reviews, certification, and cost of installation. All the installers on our list have over a hundred reviews on credible solar review websites. 

1. Semper Solaris

Address: 177 North First Street, Fresno, CA and 5234 East Pine Avenue, Fresno, CA

Telephone: 619-357-4142

Semper Solaris Construction, Inc. is a veteran-owned company with a primary focus on solar installation and repair. Established in 2012 by John Almond (20 years experience in construction) and Kelly Shawhan (20 years experience as a solar contractor), the company operates exclusively in California. In addition to solar installation and repair, the company also carries out maintenance and monitoring. 

The company has a positive relationship with all the top U.S.-based solar manufacturers like Solaria, LG Solar, Panasonic, etc. They offer 25 years warranty on solar systems, battery, and solar roofing. They are certified Tesla Powerwall home battery system installers. Expect to pay as high as $4.15 per watt which is considerably higher than the industry average. 

2. LA Solar Group

Address: 3980 North Chestnut Diagonal, Fresno, CA

Telephone: 855-552-7652

When it comes to solar design and installation, only a few companies can stand up to LA Solar Group, Inc. especially in terms of pricing. The privately-owned company offers solar installation at $3.6 per watt. Since its establishment in 2012, the company has installed over 100 commercial and 8,000 residential solar energy systems. Interestingly, 15% of their customers come from referrals which shows how well people talk about them. 

LA Solar is Tesla Powerwall 2 certified installer—one of the few solar companies in Fresno empowered to do so. In addition to solar system installation, they sell and install integrated solar home accessories, Smart Home energy management systems, EV charging outlets, and electrical main panels. They offer 25 years warranty on solar systems and 10 years on battery systems. 

3. PetersenDean

Address: 408 South Teiman Avenue, Fresno, CA

Telephone: 877-552-4418

PetersenDean prides itself as the biggest privately-owned solar power company in the U.S. The roofing and solar contractor company prioritizes sales and financing over solar leasing. From design to construction, and installation, PetersenDean personalizes the experience according to customer demand for maximum satisfaction. Founded in 1984 by Peterson (20 years) and Dean, this is one of the oldest Fresno solar companies that is still operational. 

To date, they have successfully installed over 10,000 solar systems in both residential and commercial properties. Annually, the company installs solar energy systems worth about $250 million. Also, when you get solar loans from PetersenDean, you don’t have to pay for the first 12 months and no money down is required. Their cost of installation is $4.04 per watt.

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4. Infinity Energy

Address: 2695 North Fowler Avenue, Fresno, CA

Telephone: 888-244-2513

Infinity Energy makes a bold claim that they make solar work for their customers. If you decide to get a solar installation from them now, you will not make any payment until 2022. They partner with award-winning brands in construction and energy storage to provide customers with diverse and innovative financing options. 

Infinity Energy offers 45-day solar installation. Another interesting point to note is that they offer 25 years warranty on solar and battery systems. However, one thing you should pay attention to if you are choosing Infinity Energy is the high cost per watt ($4.61) of their installation which is far higher than the industry average. 

5. Sunrun

Address: 4507 North Selland Avenue, Fresno, CA

Telephone: 844-321-6937

It is easy to see that Sunrun is the largest residential solar company in the United States. They have an office in virtually every part of California. The company founded in 2007 is the brainchild of two classmates from Stanford Graduate School of Business, Edward Fester, and Lynn Jurich. As of 2019, the company had 233,000 cut across 22 states of the nation. 

One of Sunrun’s biggest installations to date was the 115 megawatts rooftop solar energy system they put together in 2018. The company has so far installed over 1,575 megawatts of solar power. At $3.92 per watt, their solar system installations is one of the cheapest in Fresno. Sadly, they only offer 11 years warranty on the battery system. 

6. Energy Concepts

Address: 2960 N Miami Ave Fresno, CA

Telephone: 559-377-7080

Energy Concepts emphasizes that they use Maxeon quality cells to produce 75% more energy than conventional panels in the first 25 years. With over 25-years of existence in the solar industry, the company also offers no-money-down financing, in-house designs. Unlike other big names, Energy Concepts doesn’t subcontract their 

Energy Concepts is fully certified to install Tesla Powerwall—and there are only a few solar installers allowed to do so. The company is also a SunPower elite dealer. A section of the website is dedicated to helping customers understand the California Solar Tax Credits. The value they offer to customers explains their glowing reviews online.

7. A.M. Sun Solar

Address: 4230 West Swift Avenue, Fresno, CA

Telephone: 805-457-4049

A.M. Sun Solar designs and installs solar systems for residential, commercial, or agricultural settings. With over 20 years in business, the company has developed interesting programs that will help people—especially the elderly—to afford solar. One of them is the $500 cashback on every referral. Another useful tool they offer is the solar savings calculator that lets you see how much you can save by going solar. 

A.M Sun Solar offers diverse financing options to help customers finance their solar energy system. Sadly, the company doesn’t offer a solar or battery system warranty. However, when you work with A.M. Solar you are entitled to monitoring and a 12-year workmanship warranty—irrespective of the financial option you choose. 

Frequently Asked Questions

  • Are solar panels a rip-off?

The right solar company should be able to calculate your energy requirement and determine if installing solar panels will lead to lower or higher utility cost. This initial analysis will help to eliminate the awkward feeling of being ripped off. 

  • How do I find a reputable solar company?

It is always recommended that you choose approved retailers and installers. Our list will make a good start when making your research. 

  • What are the 2 main disadvantages of solar energy?

The initial high cost of installing a solar system is one of its biggest disadvantages. The other is that it is weather-dependent. Its efficiency drops significantly during rainy or cloudy seasons. 

  • Is it dangerous to live near a solar farm?

The majority of concerns that people have with living close to a solar farm are usually fixable. Therefore, there is no reason to be afraid of living near a solar farm. 

How to optimize your panels to get the most energy in Fresno

2-Axis solar panel (Photo credit: Turbine Generator)

With the 2-axis tracking solar panel, you can boost your average peak sunlight from 5.7 hours per day to 7.8 hours per day. This mounting strategy allows the solar panels to move in direction and tilt to ensure maximum exposure. 

For example, in the morning a 2-axis panel will be facing the east and by evening it will be in the west. This is the best way of increasing solar efficiency. However, it is more expensive due to the two-axis rotation. 


When it comes to setting up a solar system, it is always important to pay attention to the reviews. Some installers may claim to be among the best solar companies in Fresno but the experience of working with them will leave you in tears. Others may claim that they can help you to save thousands of dollars in utility bills but end up adding more to you. Choosing the right Fresno solar companies can help you to avoid such bitter experiences. 

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