​Frequently Asked Questions

If you are interested in our products or us, and have some questions about them, we’re here to help.


Listed on the right are the most-asked questions about our products and ANGELS SOLAR.

If you can't find the answer to your question here, feel free to contact our team. We are always glad to hear from you!

  • 1

    Why choose ANGELS SOLAR Company?

    We are one of the vendors of Clenergy who is a listed company, in the while, we OEM for many domestic companies. With cost advantage and service awareness, we ensure your products from materials to finished products. We offer customized solar mounting system solutions to meet your requirements.

  • 2

    What do you think about your design?

    With the basis of taking account into quality, our designer try to optimize every details by reducing weight and enhancing strength. They found the suitable balance to balance the quality and cost. So all are unique on the shape, size and thickness.

  • 3

    What if the wind speed is higher than 60m/s and the snow load bigger than 1.5 Kn/㎡?

    It is a better way that have our engineers work out a solution according to the local geological conditions, if the wind speed more than 60m/s, or snow load over 1.5 Kn/㎡. Our engineers are experienced enough to deal with all kinds of severe weather.

  • 4

    What materials is the bolt made of?

    We recommend the bolt made of 304 stainless steel.

  • 5

    How long is your lead time?

    2-3 weeks for regular orders. Customized orders depend on the quantity and agreement.

  • 6

    What is your payment term?

    Negotiable: T/T, L/C, D/P, D/A, OA, Western Union.

  • 7

    Do you provide OEM service?

    Yes we do.

  • 8

    How much solar energy reaches the Earth?

    The Solar Energy Resource
    Solar constant at the distance of the earth from the sun 1367 W/m2
    Total solar energy reaching the earth in a year 3,400,000 EJ
    Total solar flux reaching earth 1.08×108 GW
    Average solar energy density at earth's surface 170 W/m2

  • 9

    Can I make money selling solar?

    You can't make money by selling your solar energy to the utility. You can make some money by selling your SRECs. … Depending on your system and the amount of electricity you use, your solar system could have generated enough electricity to pay for itself in just a few years, leaving decades of free, solar energy.

  • 10

    Who invented solar energy?

    This led to a Russian scientist, Aleksandr Stoletov, creating the first-ever solar cell based on the photoelectric effect. Following this, in 1894, American inventor, Melvin Severy applied and received patents for two solar cell designs, which were both based on the photoelectric effect.

  • 11

    Are solar mounting bad for your roof?

    So, do solar panels damage your roof when installed? For most homeowners, as long as your solar panels are properly installed, they shouldn't do damage to the exterior or the infrastructure of your roof.

  • 12

    How much do solar panel mounts cost?

    Including racking and mounting, an average 6kW solar system would cost about $17,100 given the US average of about $2.85 per watt as of April 2021.

  • 13

    Is a solar farm profitable?

    Well, according to Landmark Dividend, the average solar farm profit per acre lands somewhere between $21,250 and $42,500. … Solar farms spanning hundreds of acres can see profits in the hundreds of thousands.

  • 14

    Is my roof suitable for installing solar panels?

    When trying to determine if solar panels are worth it for your roof,consider that The size of your roof;The direction your roof faces;The pitch of your roof;How much of your roof is shaded.

  • 15

    How much space should be between solar panels?

    four inches
    Once the installation of your solar panels begins, proper installation will include leaving appropriate space between the roof and the panels. Customarily, four inches of spacing is the minimum.

  • 16

    Why might you need space between rows of panels and around the edge of the roof?

    These zones exist because winds are strongest around the edges of roofs. Installing away from the roof edge reduces wind loading on the panels and makes them less likely to be damaged or even torn off in a storm.

  • 17

    What angle do you mount solar panels?

    between 30 and 45 degrees
    Ideally, a fixed, roof-mounted solar energy system should be at an angle that is equal to the latitude of the location where it is installed. However, pitch angles between 30 and 45 degrees will work well in most situations.

  • 18

    What are the different types of solar mounting systems for roofs?

    * Sloped roof mounting systems.
    * Flat roof mounting systems.
    * Solar shingles and BIPV.

  • 19

    Is it dangerous to live near a solar farm?

    Living next to a solar farm is not dangerous. There are many concerns people have but in the end, they are concerns that can be fixed or negated. There is no reason to fear living by a solar field more than one would fear living anywhere else.

  • 20

    How long do ground screws last?

    Depending on the soil type a ground screw could last 200 years in the soil without any significant wear. We give a anti corrosion warranty of 25 years. How Do I Know My Soil Is Suitable for Ground Screws: Ground screws are suitable for all common soil types.

  • 21

    How Do I Know My Soil Is Suitable for Ground Screws?

    Ground screws are suitable for all common soil types. However in some cases EPCs can do a soil test to determine the load capability of your soil type. Screw piles are sometimes the only economic answer where soil is unstable.

  • 22

    How Much Do Ground Screws Cost?

    Ground screws cost less than concrete and are quicker to install. In general your #foundation will cost a quarter to a half the price of a concrete slab.

  • 23

    What type of roof is best for solar panels?

    standing metal roof
    The roof type that is most compatible with solar panels is a standing metal roof. The standing seam allows for easier and cheaper installation without drilling into the roof. Roofing materials that are not ideal for solar include wood and slate roofs.

  • 24

    Does rooftop solar make sense?

    Not only is solar power good for the environment, but you can earn money selling back excess power to the grid. While costs have come down over the past years, installation and maintenance of solar panels can be quite costly. Solar panels are best-suited for homes that receive ample sun exposure throughout the year.

  • 25

    Are flat roofs good for solar?

    Yes, you can successfully have solar panels installed on the flat roof of your home or business. Flat roofs have a minimal slope allowance that will accommodate solar PV panel systems. … These flat roofs are also commonly known as: Low pitch roofs.

  • 26

    Are solar flat roofs bad?

    Having a flat roof doesn't prevent you from having a fully functional solar system in your home. It can even provide better energy output than a slanted roof (because you can control the tilt) for roughly the same price.

  • 27

    What size of solar system do I need?

    Based on our experience, our rule of thumb is that 1 kilowatt (kW) of solar installed in US will produce 1,300 kilowatt hours (kWh) per year. So if your home uses 12,000 kWh per year, we'd estimate you need around a 9.2 kW solar system to meet 100% of your energy needs (12,000/1,300 = 9.2).

  • 28

    What is a ballasted solar system?

    Ballast is a common alternative used on solar installations unable to penetrate either the roof or the ground. … Concrete blocks are placed throughout a project to secure an array to the ground or the roof and prevent wind lift or other movement, all without having to make any (or as many) penetrations.

  • 29

    Is it cheaper to install solar panels on the ground?

    Generally, ground mount solar panels cost a bit more than rooftop solar on a per-watt basis because of additional labor and permitting that may be required for the installation.

  • 30

    Do solar panels affect house insurance?

    In most cases there won't be any change to your home insurance premium if you fit solar panels to your property. Many insurers cover solar panels as standard, counting them as permanent fixtures to your home. However, some insurers may not cover them as standard, so it's always worth checking.

  • 31

    How do you attach solar panels to roof?

    The Basics:
    Place mounts four feet apart and on rafters.
    Drill holes into rafters.
    Secure the mount with steel bolts and seal the surrounding area.
    Fasten the solar panel to the mount.
    Connect the solar panel to the electrical supply.

  • 32

    Is solar PV a good investment?

    Solar panels are becoming a good investment in locations with higher average electricity rates. … A cost benefit to installing solar panel systems in a household is the rise in the value of the property, making solar systems a great investment in the long term, even if the home is to be sold at some point.

  • 33

    What type of mounting system is appropriate for a flat concrete roof?

    New Aluminum ballast mounting is suitable for flat Concrete roof. Aluminum structure don't need penetrate to the roof, all the solar panel will connect as a whole part and increase the strength.

  • 34

    How does solar mount to roof?

    Solar panels have been mounted to thousands of homes across America using a lag bolt and flashing. The bolt is attached to the rafters of the roof, tightly securing the solar panels and the racking system. To ensure there is no possibility of leaking, a piece of flashing is placed underneath the shingle.

  • 35

    What holds a solar panel in place?

    “solar panel roof mounting rails”的图片搜索结果
    A solar panel mount (or solar racking system) is the foundation that holds your solar array in place. Mounts are used to attach solar panels to the roof, ground, or another surface on your property. With proper installation, a sturdy mount secures your panels in harsh weather and protects your investment.

  • 36

    How much does solar panel racking cost?

    According to the National Renewable Energy Laboratory's most recent solar cost benchmarks, residential solar racking costs approximately $0.10/W and commercial solar racking costs $0.10 to $0.22/W depending on wind and snow loading measures.

  • 37

    Is ground-mounted solar cheaper?

    Ground-mounted photovoltaic arrays typically cost more than rooftop systems. The additional materials needed — including reinforced pole structures and cement foundations — are responsible for much of the added expense. Labor charges are also higher for ground-mounted panels, due to the more involved mounting process.

  • 38

    Why is ground mount solar more expensive?

    Generally, ground mount solar panels cost a bit more than rooftop solar on a per-watt basis because of additional labor and permitting that may be required for the installation.

  • 39

    What is driving the solar power boom?

    The energy transition is a major factor in the rise of renewable energy, but part of the growth of solar energy is because, over time, its price has become very cheap. In the past ten years, the cost of solar energy has decreased exponentially, and now it is the cheapest source of new energy power.

  • 40

    How to properly protect you solar PV assets from theft and vandalism, now and in the future?

    The capital costs of solar PV projects can be enormous, running up into millions of dollars and with parks taking years to realise. Given this, developers want to make the most out of their investment but an increasing practice is threatening this return: theft and vandalism of solar technology.
    One emerging method of site security is the use of drone technology to protect solar assets. While they come with higher upfront costs, automated drones carry out pre-scheduled autonomous security patrols to increase security with no extra cost, says Will Hitchcock, founder and CEO of international aerial inspection company Above Surveying.

  • 41

    How can solar PV projects still make a profit against the backdrop of rising module, land and equipment costs?

    As a result, increasing power generation is one of the most effective ways to reduce the cost of a kilowatt-hour.