what is the best solar company

What Is the Best Solar Company? A Complete 2025 Guide

Choosing the best solar company is one of the most consequential decisions a homeowner or business owner can make. A solar installation typically costs between $15,000 and $35,000 before incentives, and it is expected to perform reliably for 25 to 30 years. Unlike buying a phone or a laptop, you cannot easily return a poorly installed solar system. The company you select will determine not only your upfront price but also your long-term energy savings, warranty coverage, and peace of mind.

The problem is that “best” is not a universal label. The best solar company for a homeowner in California with a shaded roof may be entirely different from the best solar company for a small business in Texas with flat, unshaded commercial roof space. National installers, regional specialists, local electricians, and solar leasing providers all compete for your business, and each has distinct strengths and weaknesses.

This guide breaks down the factors that actually matter, compares the major players, and gives you a practical framework for identifying the best solar company for your specific situation. We will also cover the most common market pain points and the solutions that leading companies use to address them.

Key Topics That Define the Best Solar Company

To answer the question “what is the best solar company,” we need to examine five critical dimensions. Each of these topics will be explored in detail below.

1. Financial stability and track record — Will the company still be in business when you need warranty service in year 15?
2. Equipment quality and technology partnerships — Which panels, inverters, and batteries do they install, and why does it matter?
3. Installation quality and workmanship warranties — How do they handle roofing, wiring, and permitting?
4. Pricing transparency and financing options — Are you getting a fair deal, and what financing structures are available?
5. Customer service and post-installation support — What happens after the panels are on your roof?

Let’s examine each of these in depth.

1. Financial Stability and Track Record: The Hidden Deal-Breaker

The solar industry has a long history of bankruptcies and consolidations. Companies like Sungevity, Verengo, and PetersenDean all collapsed despite once being major players. When a solar company goes out of business, your 25-year production guarantee and workmanship warranty can become worthless overnight.

Before signing any contract, research the following:

• Years in business: Companies with fewer than five years of operation carry higher risk.
• Better Business Bureau rating: Look for an A+ rating and read the actual complaints, not just the score.
• Public filings: If the company is publicly traded (like Sunrun, Sunnova, or Tesla), you can review their financial statements for signs of distress.
• Local licensing: Verify the contractor’s license number with your state licensing board. In California, check the CSLB; in Texas, check the TDLR.
• Lawsuits and liens: Search county court records for unresolved lawsuits or mechanic’s liens filed by subcontractors.

A company that has been in business for 10 or more years, maintains strong financials, and has a verifiable local presence is far more likely to honor its warranties than a startup chasing rapid growth.

2. Equipment Quality and Technology Partnerships

The best solar company does not necessarily install the most expensive equipment, but it does install equipment from reputable manufacturers with strong warranty terms. The three core components are solar panels, inverters, and batteries (if you are adding storage).

Component	Top-Tier Brands	Typical Warranty	Why It Matters
Solar Panels	SunPower (Maxeon), LG, Panasonic, REC, Q CELLS	25–40 years product & performance	Higher efficiency means more power per square foot; better degradation rates mean more lifetime production.
Inverters	Enphase, SolarEdge, SMA, Fronius	10–25 years (Enphase microinverters up to 25 years)	Inverters convert DC to AC power; they are the most common point of failure. Microinverters offer panel-level monitoring and shading tolerance.
Batteries	Tesla Powerwall, Enphase IQ Battery, LG RESU, Generac PWRcell	10 years or 10,000 cycles	Storage lets you use solar power at night and provides backup during outages.

A company that offers only one brand of panels or inverters may be limiting your options. The best solar companies typically offer a curated selection of two or three top-tier brands and can explain the trade-offs between them.

3. Installation Quality and Workmanship Warranties

Even the best equipment will underperform if it is installed poorly. Common installation problems include:

• Roof penetrations that are not properly flashed, leading to leaks
• Undersized wiring that causes voltage drop and efficiency losses
• Poorly planned layouts that create shading issues
• Inadequate grounding and rapid shutdown compliance
• Subcontracting to low-bid crews with no direct oversight

Ask every solar company the following questions:

1. Do you use your own employees or subcontractors? (In-house crews generally provide better quality control.)
2. What is your workmanship warranty, and what does it cover? (Look for at least 10 years, ideally 25.)
3. Who handles the permitting and interconnection paperwork?
4. Will you conduct a structural roof assessment before installation?
5. Can you provide references from customers whose systems are at least three years old?

A strong workmanship warranty is a signal that the company stands behind its installation. Companies that offer only a one-year workmanship warranty are telling you something important about their confidence in their own work.

4. Pricing Transparency and Financing Options

Solar pricing varies widely by state, system size, and equipment choice. According to EnergySage, the national average cost of solar in 2024 was between $2.50 and $3.50 per watt before incentives. That means a 6 kW system costs roughly $15,000 to $21,000, while a 10 kW system costs $25,000 to $35,000.

Financing Option	How It Works	Pros	Cons
Cash Purchase	You pay the full cost upfront.	Lowest total cost; you own the system and all incentives.	High upfront cost; requires available capital.
Solar Loan	You borrow money and own the system.	No upfront cost; you own the system and qualify for the 30% federal tax credit.	Monthly loan payment; interest charges.
Lease	You pay a monthly fee to lease the system.	No upfront cost; predictable payments.	You do not own the system; the leasing company keeps the tax credit; selling your home can be complicated.
Power Purchase Agreement (PPA)	You buy the electricity the system produces at a fixed rate.	No upfront cost; lower electricity rate than the utility.	You do not own the system; long-term contract; complications when selling your home.

The best solar company will present multiple financing options clearly, without pressure, and will show you the total cost of each option over the life of the system. Be wary of companies that quote only a monthly payment without disclosing the total system cost or the interest rate.

5. Customer Service and Post-Installation Support

Your relationship with your solar company does not end when the panels are installed. It begins. Over a 25-year lifespan, you may need:

• System monitoring and performance alerts
• Inverter replacement (typically in years 10–15)
• Panel cleaning or troubleshooting
• Warranty claims for defective equipment
• Assistance with utility net metering changes
• System expansion if you add an EV or battery

Look for companies that offer:

• 24/7 monitoring: They should proactively detect underperformance.
• Dedicated support channels: Phone, email, and a customer portal.
• Local presence: A company with a local office can send a technician quickly.
• Clear warranty documentation: You should receive a written summary of all warranties at installation.

How the Major Solar Companies Compare

The U.S. solar market includes several large national companies and hundreds of regional installers. Below is a comparison of some of the most well-known names, based on publicly available data, customer reviews, and industry reports.

Company	Type	Coverage	Key Strengths	Potential Drawbacks
Sunrun	National installer & leasing	Nationwide (22+ states)	Largest residential solar company in the U.S.; strong lease/PPA options; good for customers who want no upfront cost.	Leases and PPAs mean you do not own the system; customer service reviews are mixed.
Tesla Solar	National installer	Nationwide (select areas)	Competitive pricing; sleek Solar Roof product; Powerwall integration.	Limited customization; customer service complaints; no longer offers leases in most states.
SunPower (now Complete Solaria)	National installer	Nationwide	High-efficiency Maxeon panels; strong warranties.	Premium pricing; financial difficulties in 2024 led to restructuring.
Momentum Solar	National installer	East Coast, Midwest, South	In-house installation crews; strong workmanship warranty.	Limited geographic coverage; higher prices than some local installers.
Palmetto Solar	National installer	Nationwide (select areas)	Good technology platform; solar + storage bundles.	Uses subcontractors in some markets.
Local/Regional Installers	Local businesses	Specific metro areas	Personalized service; often lower prices; deep knowledge of local incentives and utilities.	Limited warranty backing if they go out of business; less standardized processes.

There is no single “best” company on this list. Sunrun is best for someone who wants a lease with no upfront cost. Tesla is best for someone who wants a low price and is comfortable with minimal hand-holding. A local installer is often best for someone who values personalized service and wants to support a local business.

Market Pain Points and Their Solutions

The solar industry has several well-documented problems that make it difficult for consumers to identify the best solar company. Understanding these pain points — and the solutions that leading companies have developed — will help you ask the right questions.

Pain Point 1: Aggressive and Deceptive Sales Tactics

Solar sales has a reputation problem. Door-to-door salespeople sometimes exaggerate savings, obscure the terms of leases, or pressure homeowners into signing contracts before they have had time to review them. The result is that many homeowners end up with systems that cost more than promised or contracts they do not fully understand.

Solution: The best solar companies have moved away from high-pressure sales. They provide written proposals with clear assumptions, offer references, and give you time to review the contract. Look for companies that provide a detailed production estimate based on satellite shading analysis and local weather data, not just a generic savings claim. Third-party platforms like EnergySage allow you to compare multiple quotes side by side without a salesperson present.

Pain Point 2: Confusing Financing and Hidden Fees

Solar financing can be opaque. Some solar loans have dealer fees of 15–30% that are rolled into the loan balance, meaning you pay interest on a higher amount than the actual system cost. Leases and PPAs often include annual escalators of 1–3%, so your payment increases every year.

Solution: Reputable companies disclose the total system cost, the interest rate, the dealer fee (if any), and the escalator (for leases/PPAs) in writing before you sign. Ask for the “cash price” of the system and compare it to the financed price. If the difference is more than 10–15%, you are likely paying a significant dealer fee.

Pain Point 3: Poor Post-Installation Support

Many solar companies are excellent at sales and installation but poor at ongoing support. Once the system is on the roof and the final payment is made, getting someone to respond to a performance issue can be frustrating. This is especially common with companies that have grown quickly or that subcontract installation and service.

Solution: Choose a company with a dedicated service department, not just a sales team. Ask how many service technicians they employ and how quickly they can respond to a service call. Companies that offer 24/7 monitoring and proactive maintenance alerts are more likely to catch problems before you notice them.

Pain Point 4: Warranty Confusion and Gaps

A solar system comes with multiple warranties: panel product warranty, panel performance warranty, inverter warranty, workmanship warranty, and sometimes a production guarantee. Homeowners often do not realize that these warranties are provided by different parties and that the installer’s workmanship warranty may be the most important one for the first decade.

Solution: The best solar companies provide a single, clear warranty document that explains who covers what and for how long. They also register your equipment warranties with the manufacturers on your behalf. If a company cannot clearly explain its warranty structure, that is a red flag.

Pain Point 5: Roof Damage and Leaks

Improperly sealed roof penetrations are a leading cause of homeowner complaints after solar installation. Water damage can take months or years to appear, and by then the installer may be difficult to reach.

Solution: Choose a company that performs a roof inspection before installation and that offers a workmanship warranty covering roof penetrations for at least 10 years. Some companies partner with roofing contractors to provide an integrated roof-and-solar warranty. If your roof is more than 15 years old, consider replacing it before installing solar to avoid the cost of removing and reinstalling panels later.

Pain Point 6: Utility Interconnection Delays

After installation, your system must be inspected and approved by your local building department and then interconnected by your utility. These steps can take weeks or months, and delays are common in high-demand areas. During this time, your system may be installed but not yet producing power.

Solution: Ask the solar company how they handle permitting and interconnection. The best companies have dedicated permitting teams and track record of fast approvals. They should also set realistic expectations about the timeline and keep you informed throughout the process.

How to Choose the Best Solar Company for Your Situation

Now that we have covered the key factors and the market pain points, here is a step-by-step framework for choosing the best solar company for your home or business.

Step 1: Define Your Goals

Are you trying to eliminate your electric bill, reduce it by a certain percentage, or achieve energy independence with battery backup? Your goals will determine the system size, whether you need storage, and which financing option makes sense.

Step 2: Get at Least Three Quotes

Never accept the first quote you receive. Get at least three quotes from different types of companies: a national installer, a regional installer, and a local company. Compare them on price per watt, equipment quality, warranties, and financing terms.

Step 3: Verify Licensing and Insurance

Check the company’s contractor license, liability insurance, and workers’ compensation insurance. In most states, you can verify a license online in a few minutes. Do not skip this step.

Step 4: Read the Contract Carefully

Before signing, make sure the contract includes:

• Total system cost and financing terms
• Equipment make and model numbers
• Estimated annual production (in kWh)
• Warranty details for all components and workmanship
• Timeline for installation, permitting, and interconnection
• Change order process (what happens if the scope changes)
• Cancellation policy and refund terms

Step 5: Check References and Reviews

Ask for references from customers who have had their systems for at least two years. Read reviews on Google, Yelp, the Better Business Bureau, and SolarReviews. Pay attention to how the company responds to negative reviews — that tells you a lot about their customer service culture.

Step 6: Trust Your Instincts

If a salesperson is pressuring you to sign immediately, if the contract is confusing, or if the company evades your questions, walk away. There are plenty of reputable solar companies. You do not need to work with one that makes you uncomfortable.

Frequently Asked Questions About the Best Solar Company

FAQ 1: Is it better to choose a national solar company or a local installer?

It depends on your priorities. National companies like Sunrun and Tesla offer standardized processes, strong financing options, and the backing of a large corporation. Local installers often provide more personalized service, competitive pricing, and deep knowledge of local utility rules and incentives. The best choice is the company that best meets your specific needs, regardless of size. Many homeowners find that a well-established regional company offers the best combination of accountability and service.

FAQ 2: How do I know if a solar company’s savings estimate is realistic?

A realistic savings estimate should be based on your actual electricity usage history, a shading analysis of your roof, local weather data, and your utility’s net metering policy. Be skeptical of estimates that assume 100% offset of your bill without accounting for seasonal variations, or that assume utility rates will rise at unrealistic rates. Ask the company to show you the assumptions behind their numbers.

FAQ 3: What happens to my warranty if the solar company goes out of business?

Equipment warranties (panels, inverters, batteries) are provided by the manufacturers, not the installer, so they usually remain valid even if the installer goes out of business. However, workmanship warranties and production guarantees are provided by the installer and may become difficult to enforce. This is why financial stability is such an important factor in choosing a solar company. If your installer does go out of business, you may be able to transfer your workmanship warranty to another company for a fee.

FAQ 4: Can I install solar panels myself and still get the federal tax credit?

Yes, you can install solar panels yourself and still qualify for the 30% federal Investment Tax Credit (ITC), as long as you own the system and it is installed on your primary or secondary residence. However, DIY solar is complex, requires electrical expertise, and may void equipment warranties if not installed by a licensed professional. Most homeowners find that the savings from DIY are not worth the risk and hassle.

FAQ 5: How long does the solar installation process take from start to finish?

The typical timeline is 2 to 6 months from signing the contract to turning the system on. This includes site assessment (1–2 weeks), permitting (2–8 weeks depending on your jurisdiction), installation (1–3 days), inspection (1–4 weeks), and utility interconnection (2–8 weeks). Some companies can complete the process faster in areas with streamlined permitting.

FAQ 6: What is the best solar company for homes with shaded roofs?

Homes with shaded roofs benefit most from solar panels paired with microinverters or power optimizers, which allow each panel to operate independently. Enphase microinverters and SolarEdge optimizers are the leading solutions. Companies that specialize in shaded installations, such as those that use Enphase equipment and perform detailed shading analysis, are the best choice. In some cases, a solar company may recommend trimming trees or installing panels on a different roof plane to maximize production.

Conclusion: The Best Solar Company Is the One That Fits Your Needs

There is no single best solar company for everyone. The best solar company for you is the one that offers high-quality equipment, transparent pricing, strong warranties, and responsive customer service — and that has the financial stability to honor those warranties for decades to come. National companies offer scale and standardized processes; local companies offer personalized service and local expertise. The right choice depends on your goals, your budget, and your tolerance for risk.

Use the framework in this guide to evaluate your options. Get multiple quotes, verify licensing and insurance, read the contract carefully, and check references. Do not let a salesperson rush you. A decision this important deserves careful consideration.

As the solar industry continues to mature, the gap between the best and worst companies is widening. The best companies are investing in customer service, transparent sales practices, and long-term warranty support. The worst are cutting corners and relying on high-pressure sales. By doing your homework, you can ensure that you end up with a solar system that saves you money and performs reliably for the next 25 years.