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    Best Solar Energy Companies

    Solar energy is the most accessible and abundant energy source on Earth, and also the cheapest. Air conditioners, water heaters and anything that operates with gas and electricity can run on solar power. First, use our guide to determine if your house is a good candidate for solar and then compare solar companies.

    Compare Top Solar 星空娱乐app下载安装 Reviews

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    Zenernet
    Read 27 Reviews

    Specializing in residential solar panels, energy monitoring and smart 星空娱乐app下载安装 integration systems, this company provides no-pressure consultations, up-front pricing and premium technology. Warranties are available.

    SunPower
    Read 652 Reviews

    星空娱乐app下载安装, business and global solar energy provider and system maker with purchase, loan and no-money-down lease options. Local certified installation with a 25-year complete system warranty covering power, product and service.

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    Sunrun
    Read 1,399 Reviews

    Provides loans and leases for no money down and options to prepay or purchase solar energy with installation, 10-year roof coverage and rate protection. Free maintenance, daily monitoring and 20-year insurance policy included.

    SunLux Energy
    Read 307 Reviews

    Full-service solar energy provider with options to purchase, finance, pre-pay or lease for zero down. Complete system installation and lifetime customer service includes maintenance, monitoring and comprehensive 25-year warranty.

    Vivint Solar
    Read 2,286 Reviews

    Offers solar energy leases and loans, along with solar panel installation, design and permitting. Plans start at $0 down and include maintenance, monitoring and a 25-year panel warranty. Systems can also be purchased outright.

    PetersenDean
    Read 129 Reviews

    Solar contractor focused on zero-down loans for up to 20 years and multi-paneled systems including design, permitting, installation and inspection. A 25-year workmanship warranty includes roof penetration and transfer guaranty.

    Sungevity
    Read 311 Reviews

    Powering Horizon Solar Power & Solar Spectrum, Sungevity offers zero-down solar energy systems with lifetime guarantees. Free installation, maintenance & repair included. Fixed rates for 20 years, with option to buy or extend.

    Dividend Solar
    Read 632 Reviews

    Finances zero-down solar system loans in more than 25 states with installation, low or flat-fixed rates, a 10-year workmanship warranty and optional 20-year extended service plan. Storage batteries and PACE financing is available.

    Complete Solar
    Read 185 Reviews

    Partner-based business model connecting 星空娱乐app下载安装owners in California, Utah and New Jersey with solar energy providers and no-money-down financing options. Design, installation, permitting, maintenance and 25-year guarantee included.

    RGS Energy
    Read 30 Reviews

    Full-service solar provider offering installation and zero-down financing in 10 states. Systems can also be purchased outright. Design, permitting, inspection and 25-year warranties included. Service and maintenance available.

    Not sure who to choose?

    Take our two minute quiz to find the right solar energy company for you.

      What is solar energy?

      In the simplest terms, solar energy is energy derived from sunlight. The sun releases particles of light called photons. When photons come into contact with solar panels, it forces electrons free from atoms, which creates an electrical flow that can be converted into solar thermal energy or electrical energy.

      Sun energy is a form of renewable energy, meaning it doesn’t use up natural resources or harm the environment. When it comes to harnessing those photons into energy, there are two main types of solar energy technologies: photovoltaic cell (PV) and concentrating solar power (CSP). Both convert sun energy into electrical power.

      Is my house a good candidate for solar?

      If you have high electric bills and sun in your yard, solar panels might be a good investment for you. There are two questions everyone should ask when considering adding solar panels to their 星空娱乐app下载安装:

      1. How much is your energy bill?
        In order to actually save money by going solar, your current utility bill needs to be at least $75 per month. Residential solar companies set this $75 threshold because if your monthly utility bill is less than that, you won’t really see energy savings by installing solar panels to your 星空娱乐app下载安装.
      2. What kind of roof do you have?
        The best solar panels have a life expectancy of 40+ years, so you need to be certain your roof can last just as long. Solar panels require mounting hardware, which works best on composite or asphalt shingle, concrete tile or standing seam metal, or other sturdy material. If you’ve been thinking of replacing your roof, prioritize that over installing residential solar panels.

      If you’ve got a sturdy roof and your utility bill is over $75 per month, then you should set up a solar consultation. A solar panel expert will come to your 星空娱乐app下载安装 to evaluate its potential for solar panels. Other considerations include:

      • The size of your roof
        One solar panel is 5 1/2 feet tall by 3 feet wide, so the area of available space on your roof could determine how much of your energy needs can be met by solar panels. On average, and under proper conditions, one solar panel produces about 1 kWh per day. If your daily kWh usage is 30, you would need 30 solar panels to generate all of your energy needs.
      • The direction of your roof
        To get the best efficiency out of your solar panels, you must mount them toward the rotation of the sun. In the northern hemisphere, this means orienting it on a south-facing part of your roof.
      • How much sun you get
        Solar panels produce more power when they get more direct sunlight, unshaded by trees or taller buildings. The more sun in your area, the more electricity you’ll be able to produce. Know that you also might end up using a lot of power for air conditioning. Solar energy companies calculate “peak sun-hours” unique to your 星空娱乐app下载安装. Peak sun-hours are the hours on a typical day that determine how much of the day sunlight can reach your panels at 1,000 watts per square meter. Most 星空娱乐app下载安装s in the United States have three to five peak sun-hours, with less in the winter and more in the summer.
      • Where you live
        The climate will also affect how much energy you need. Keep in mind that if your 星空娱乐app下载安装 is surrounded by shade from tall buildings, large trees or other obstructions, this will interfere with the amount of sunlight your panels will receive, thus making it less effective. You can calculate your peak sun-hours by placing an insolation meter in direct sunlight, and the meter will inform you about the solar power supply and current light intensity in your area.

      Finally, consider how much solar panels cost. It’s important to know whether the solar company offers solar leases or Power Purchase Agreements (PPAs), if they provide loans, or if they can help you get Property Assessed Clean Energy (PACE) financing. There are financing, leasing and PPA (power purchase agreement) options. As with most major purchases, there are pros and cons to consider before you install solar panels onto your 星空娱乐app下载安装.

      Types of solar companies

      Most companies aren’t equipped to manufacture, install and finance your solar panel system, but rather specialize in one of those areas. As a 星空娱乐app下载安装owner, you’ll mostly deal with installers and financing companies, but it’s important to understand how the different types of solar companies function. Remember that you don’t have to go with the same company for installation and financing.

      • Solar panel manufacturers
        Solar panel manufacturers create the solar cells and assemble the solar panels that go on your roof. Often solar panel manufacturers are also at the forefront of solar energy research and development. The best solar panel manufacturers own their supply chain and assemble high-efficiency solar panels from the cells they create. They offer warranties on their products.
      • Solar installers
        If you think about it like buying a car, your installer is often like your dealership. Usually, solar panel installers will source your panels from a solar panel manufacturer directly or through a solar panel wholesaler. A solar panel installer’s primary business is getting solar panels working on your rooftop, which requires other components like wiring and inverters that the solar panel manufacturer might not specialize in. These companies can be small or large. Some serve only certain geographic areas, while others operate nationwide.
      • Solar financing companies
        These companies help people finance a solar panel system for their 星空娱乐app下载安装 through solar leases, loans or power purchase agreements. For more information, read our guide on solar financing companies.

      Solar energy questions

      How does solar energy work?
      The most practical and common application of solar energy today for residential use is solar panels. PV panels are made up of many solar cells that have semiconductor materials to capture the light. When the sunlight hits those cells, electrons are knocked loose, creating an electric current. The electrons flow through a circuit on the panels and generate electricity.

      Solar panels are made up of a collection of photovoltaic cells, commonly referred to as PV cells. The PV cells absorb sunlight and generate a direct current, which is then converted into alternating current electricity by an inverter. As the most important part of a solar energy system, a solar inverter converts the direct current (DC) output of a PV panel into alternative 240V currents (AC) that then feed energy into the 星空娱乐app下载安装. Alternating current electricity is what powers your 星空娱乐app下载安装. The more panels on a 星空娱乐app下载安装 or business, the more energy that can be created.

      The energy that a panel can produce will vary by location and its available sunlight, but in general, most 星空娱乐app下载安装 solar panels have power output ratings ranging from 250 to 400 watts, with an average of about 320. The efficiency of your solar panels and how much electricity you require in your 星空娱乐app下载安装 will dictate the number of solar panels you need.

      What are the different types of solar energy technologies?
      The three types of technologies most commonly used to harness solar energy are photovoltaics, concentrating solar power and direct thermal:
      • Photovoltaic technology
        Often referred to as PV, this technology converts sunlight directly into electricity using panels. Most commonly used in residential 星空娱乐app下载安装s, photovoltaic panels are made up of many solar cells that have semiconductor materials to capture the light. When the sunlight hits those cells, electrons are knocked loose, creating an electric current. The electrons flow through a circuit on the panels and generate electricity. The more panels on a 星空娱乐app下载安装 or business, the more energy that can be generated.
      • Concentrated solar power
        Referred to as CSP, concentrated solar power is used mostly in large power plants and is not typically recommended for residential use. CSP technology concentrates sunlight using mirrors and reflectors to collect solar energy and turn it into thermal energy. This thermal technology harnesses the sun’s heat and converts it to mechanical energy before converting that to concentrated solar power to heat 星空娱乐app下载安装s and water. This energy can be used to power turbines, which then makes electricity. CSP plants can also store their energy in order to produce electricity at all times of the day.
      • Direct thermal
        Also called solar heating, direct thermal is another type of solar technology. These systems, like water heaters for 星空娱乐app下载安装s or pools, use solar energy directly as a source of heat. By using sunlight or collector systems, direct-thermal systems can also heat living and working spaces, which can reduce utility costs immensely. There are also solar cooling systems that can circulate air conditioning or liquid through an HVAC system, without the use of electricity.
      How do I choose a solar company?
      To choose a solar company, start by figuring out what kind of solar panels you want. The three most popular types of solar panels are:
      • Amorphous
      • Monocrystalline
      • Polycrystalline

      Once you pick the type of solar panel you want, find a company that specializes in that style. Make sure a solar company is right for you by checking their:

      • Licenses and insurance policies
      • Consumer reviews
      • Expertise level
      • Financing options
      Do you really save money with solar panels?
      Solar panels could save you a lot of money on electricity costs. Depending on where you live, you could even be eligible for extra incentives through the federal, state or local government. To find out how much money you could save through solar panels, click here.
      How much does solar installation cost?
      Solar panel installation costs vary based on multiple factors, including:
      • Where you live
      • Style of panel
      • Amount of panels

      The federal solar tax credit can reduce your solar installation costs by 30% if you meet all of the eligibility requirements. For more information on solar installation costs, click here.

      How many solar panels would it take to power a house?
      The amount of solar panels needed to power a house is dependent on a few factors:
      • Your electricity usage
      • Type of panels you have
      • Solar exposure

      If you’re concerned about the number of solar panels you’re going to need, don’t be afraid to get quotes from different providers and compare benefits.

      Not sure how to choose?

      Get expert buying tips about Solar Energy Companies delivered to your inbox.

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        Expert reviews about solar companies

        Dividend Solar

        This solar financing company’s mission is to give investors a way to invest in solar and to provide 星空娱乐app下载安装owners another source of financing. Through crowd-sourced investments, a 星空娱乐app下载安装owner can get a competitive loan to cover the cost of a rooftop solar system.

        Read More
        Vivint Solar

        This company offers solar panels and a product line of solar batteries, powerful chargers and smart 星空娱乐app下载安装 apps to customers in 22 states. Plans include solar purchase, solar loan, solar power purchase agreement (PPA) and solar lease.>

        Read More
        SolarCity

        Perhaps the largest residential solar installation company, this California-based subsidiary of Tesla manufactures and installs solar panels, servicing about 275,000 residential and commercial customers in 19 states and Washington, D.C.

        Read More
        Solar Five

        Based in Massachusetts, this company provides affordable solar energy to 星空娱乐app下载安装owners, businesses and governments. They manage the installation process from start to finish for an easy transition to solar power.

        Read More
        Sunrun

        In business for over 10 years, this company services more than 100,000 customers in 22 states. They specialize in customized solar energy systems and offers a lifetime warranty on its products.

        Read More
        SunLux Energy

        This company can handle everything from site evaluation and paperwork and installation to maintenance—locations in California, Texas, Nevada and Arizona. For over 20 years, they have focused on helping consumers save money but pinpointing their properties exact energy needs.

        Read More
        SunPower

        The world’s leading solar cell and solar module manufacturers is also a leading solar installer. It was one of the first solar companies to become vertically integrated and was the first U.S. company focused on the 星空娱乐app下载安装 solar market to do so. Aside from residential solar installations, this company is routinely one of the top commercial solar panel installers in the United States.

        Read More
        Zenernet

        Going solar is easy with Zenernet's convenient consultations, up-front pricing and financing options. Professional solar panel installation is available across the U.S. with long-term warranties.

        • Consultation: Talk to a solar panel expert over the phone to get a customized solar plan for your 星空娱乐app下载安装.
        • Pricing: Technicians always quote the lowest price they can offer, so you don’t have to worry about haggling.
        • Hardware: Zenernet builds solar panels systems to look good and perform with sleek, black-on-black panels. Warranties cover your system and roof for 25 years.
        • Financing: Several financing options are available to work within your budget and financial preferences.
        • Installation: Their network of professional local installers with solar experience are all certified and insured. Installation is available in California, Arizona, Texas, Illinois and other states.
        Read 27 Reviews
        RGS Energy

        This company provides solar power systems, solar financing and maintenance services. Since its founding in 1978, this solar power systems installer has installed over 25,000 solar energy systems on 星空娱乐app下载安装, schools and businesses.

        Read More
        Complete Solar

        Devoted to designing and installing residential solar power systems, this company offers a range of services, and much of its success comes from a proprietary technology that helps clients choose specific features while staying within their budgets.

        Read More
        PetersenDean

        Founded in 1984, this residential and commercial roofing and solar company handles estimating, design, permitting and American-made roofs and solar roofing systems installation. They also offer backup batteries and EV chargers.

        Read 129 Reviews
        Sungevity

        The company is a leading solar power provider that designs and installs residential and commercial solar systems in California. It offers flexible financing options and fast installation time.

        Read More
        Go Solar

        This Colorado-based and Colorado-focused full-service solar company has partnered with high-quality U.S.-based companies to offer great solar products made in the USA.

        • Supports the US economy: Focused on supporting the U.S. economy, Go Solar, Inc. uses solar panels and solar inverters from top U.S. solar companies such as SunEdison and Enphase.
        • Industry knowledge: The company’s leadership knows solar technology and solar financing in depth, which leads to a high-quality product offering and competitive financing options.
        • High-quality industry partnership: With SunEdison as a dedicated partner, Go Solar, Inc., presumably gets a good deal on its solar panels, thus allowing the company to offer customers a good deal on high-quality solar technology (which includes a 25-year warranty).
        • Complete service: Go Solar, Inc. keeps the customer experience smooth and pleasant with in-house contractors, financing, maintenance, monitoring and even roof repair (with a 20-year “bumper to bumper” warranty).
        • Mutual benefit with growth: The company also offers a $500 reward for referring new customers.
        Crius Solar

        This company offers leading retail energy products and full-service solar installation from Verengo Solar.

        Read More
        Pick My Solar

        This unique solar company is focused on assisting 星空娱乐app下载安装owners who want to go solar. It collects bids from various solar installers, evaluates them and makes recommendations to the 星空娱乐app下载安装owners.

        Read More
        Tesla Energy

        This company offers solar solutions for both businesses and residences through a partnership with Sunworks to build a solar-driven community that provides affordable, clean energy to clients all over the world.

        • Tesla solar panels: Tesla solar panels have a low-profile design that blends into your roof. These sleek panels show no mounting hardware to give them a clean, integrated look.
        • Tesla Powerwall: The Tesla Powerwall stores energy that the solar panels capture for use during natural disasters and power outages. These compact backup power sources integrate with Tesla solar.
        • Tesla solar roof: Tesla started production on solar roofs in 2017. These roofs are made entirely of solar panels, and they come in four different options: smooth, textured and slate.
        • Commercial and government products: Tesla offers solar energy solutions for commercial and government organizations. Tesla provides panels and Powerpack energy storage for municipalities, schools, enterprises, agriculture and more.
        • Utilities: Tesla designs solar energy solutions for power grids. Tesla’s centralized solar power generators provide clean, renewable energy storage.

        Compare Top Solar 星空娱乐app下载安装 Reviews

        Solar Five
        Read 22 Reviews

        Provides residential and commercial solar energy ownership and lease options on the East Coast with installation, monitoring, 20-year system warranty and five-year workmanship guarantee. Rooftop and ground systems available.

        Crius Solar
        Read 13 Reviews

        Offers comprehensive solar energy service, including design, planning, permitting and installation. $0 down loans and PPAs available. Plans include repair, monitoring and insurance for 20 years.

        EnergySage
        Read Reviews

        Nationwide cost-comparing network gathering competitive offers from pre-screened installers in an online solar marketplace. Customers can request and compare competing quotes and research solar financing across 30-plus states.

        Pick My Solar

        Online hub matching users with solar manufacturers, financiers and certified installers who competitively bid on projects. Triple-coverage guarantee includes production, workmanship warranty and system’s manufacturer warranty.

        Tesla Energy
        Read Expert Review

        Designs and installs solar panels and roof shingles with options to buy, finance or lease systems for no money down. Monitoring, maintenance and insurance available. Systems include a 20-year warranty. 星空娱乐app下载安装 batteries available.

        Go Solar
        Read Expert Review

        Based in colorado, Go Solar is dedicated to making quality solar products that are made in the USA. The company offers both residential and commercial solutions.

        SolarCity
        Read 586 Reviews
        Out of Business

        Nationwide residential and commercial solar panel installation specialist, now a subsidiary of Tesla that’s responsible for installing low-profile-design solar panels and solar roof tiles for use with Tesla’s 星空娱乐app下载安装 battery system.

        by Zachary Shahan Solar Energy Contributing Editor

        Zachary Shahan is the director of CleanTechnica, and his key areas of focus are solar energy and electric vehicles. He has been referenced or interviewed by essentially every major media organization as a recognized global thought leader on solar energy.

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        星空娱乐app下载安装

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