solar plate price

Below is the current average Solar Plate Price for panel installations for the most common residential solar systems installed, sized from 4 kW to 20 kW. In this post, we will discuss the 300w solar panel price in nigeria and 500w solar panel price in nigeria.

There are a number of steps to follow when planning to power your home with solar energy. After choosing which option is best for you to use solar , follow the steps afterward that apply to you. Your solar energy installer and local utility company can provide more information on the exact steps you will need to take to power your home with solar energy.

Solar Plate Price

System size*Average cost
per watt
Average Cost
(showing after tax credit)
show before tax credit
Savings on
your home
(25 years)
4 kW$3.66$10,827Calculate
5 kW$3.50$12,965Calculate
6 kW$3.37$14,974Calculate
8 kW$3.19$18,864Calculate
10 kW$3.05$22,606Calculate
12 kW$2.93$26,058Calculate
20 kW$2.79$41,346Calculate

What is a kilowatt and what is a kilowatt hour?

By entering your zip code into the solar power calculator below, you can easily find out how many solar panels you need for your home. You’ll also see live solar prices in your city for the recommended solar system size for your home.

Enter your zip code and power cost to calculate the right system size for your home and see live current solar offers in your city

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Solar Panel - Price and Features - Nigeria Technology Guide

Average solar panel cost in each state in 2020?

If you prefer to view solar power system prices specific to your city or region, you can select your city below.             Select state                             Alabama                             Alaska                             Arizona                             Arkansas                             California                             Colorado                             Connecticut                             District of Columbia                             Delaware                             Florida                             Georgia                             Guam                             Hawaii                             Idaho                             Illinois                             Indiana                             Iowa                             Kansas                             Kentucky                             Louisiana                             Maine                             Maryland                             Massachusetts                             Michigan                             Minnesota                             Mississippi                             Missouri                             Montana                             Nebraska                             Nevada                             New Hampshire                             New Jersey                             New Mexico                             New York                             North Carolina                             North Dakota                             Ohio                             Oklahoma                             Oregon                             Pennsylvania                             Puerto Rico                             Rhode Island                             South Carolina                             South Dakota                             Tennessee                             Texas                             Utah                             Vermont                             Virgin Islands                             Virginia                             Washington                             West Virginia                             Wisconsin                             Wyoming                                   Select city          See my Location

(If your city is not listed, try a nearby city or view information for your state)

StateAverage cost
per watt
Cost of 5kW system
(showing after tax credit)
show before tax credit
lifetime savings
New Jersey$3.07$11,420$143,955
New Mexico$3.44$12,457$66,748
New York$3.34$12,943$137,512
South Carolina$3.81$14,911$87,565

Show all states

Average solar system cost for installed systems using each of the best brands of solar panels in 2020

Below are the solar panel costs for systems using the 15 most frequently-installed residential solar panels. This list also includes the most efficient solar panels on the market, which is likely the reason they are the most commonly-installed.

Panel ModelWattageEfficiencyLowest Cost Per Watt
(installed system)
(showing after tax credit)
show before tax credit
Average Cost Per Watt
(installed system)
(showing after tax credit)
show before tax credit
Q.PEAK-G4.1 30530518.30%$2.00$2.60
REC290TP2 BLK29017.40%$2.06$2.76

Why do we use ‘cost per watt’ as a way of measuring solar power system costs?

Solar panels are priced by the watt. “Cost per watt” is used when talking about the relative value of residential solar systems, rather than “total cost” because it allows us to compare systems of different sizes.

Here at SolarReviews, we are seeing homeowners who search for competitive quotes finding solar panel costs per watt as low as $2.26 in some states. While cost is not the only factor to consider when buying solar panels for your house, the decision to install them is primarily a financial one. Therefore, obtaining the best-possible system cost is important in order to minimize your solar payback period and maximize your solar savings.

Calculate how many solar panels you need to power your house and compare prices

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What factors affect the cost of solar panels for your home?

There are many factors that affect solar panel installation costs with regard to specific homes, including:

The location of your home

The location of a home affects the cost of installing solar in a few ways. Because the average cost per watt for solar systems varies throughout the country, it leads to different solar system costs. Not only that, the amount of sunlight each location receives affects system output and dictates how many solar modules you will need, which, in turn, directly affects the total system cost.

The amount of electricity your home uses

A house that uses more electricity will need more solar panels. Although solar panels do get cheaper on a per-watt basis, as the system size gets bigger, the overall cost of the system increases, as well.

The type of solar panels and inverter you buy

There is a significant difference in cost between the top-rated solar panels and brands that are perceived to be of lesser quality. The same is also true for inverters. For example, a 6kW solar system using Sunpower or Panasonic solar panels can be as much as $5,000 more expensive than a solar system using Canadian Solar Modules.

The relative ease or difficulty of installing solar panels on your home

If your roof is particularly difficult to install solar panels on, say, if your home is three stories high or has a roof with a 45° pitch, it will take longer to install the panels and do the wiring.

Calculate how much power solar panels will produce on your home

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Learn more about how much solar panels will cost for your house with our solar panel cost calculator

Our solar power calculator, originally developed with funding from the Department of Energy, is the easiest way to determine the solar panel installation cost for your home because it only requires the input of your address and monthly power spend. From this information, the solar calculator knows your utility company, your electric rates, and how much power you use. It will tell you:

  • Step 1: How many solar panels you need to power your house?
  • Step 2: Roof space: How many solar panels will fit on your roof and where will they go?
  • Step 3: How much your solar panels will cost, and how much they will save you?

The solar panel calculator will assume you want to install a solar power system to offset 100% of your energy use. This is because net metering laws limit the size of eligible solar systems to a system producing a similar amount of energy as your house uses.

Are individual solar panel prices still falling?

The median cost per watt for residential solar energy systems has dropped about 70% since 2000. However, in the last few years price decreases have slowed and are decreasing at a rate of about 5% per year.

It is unlikely that we will see steep or sudden falls in pricing again because at the wholesale level, individual solar panels are now only in the range of $0.40 per watt to $1.10 per watt (depending on the quality of the brand of solar panel). As of 2020, the federal solar tax credit has reduced to 26% and will go away completely in 2022. It is unlikely we will see any cost reductions that would be large enough to offset the loss of the tax credit. This means that waiting to install solar panels for your home seems unwise.

How to calculate solar panel cost for your home without collecting power bills?

While there is data on average electricity use of homes in each state and how many solar panels are needed to power an average house in each state these averages are of little use, as most people considering solar tend to have electricity usage that is almost double their state average.

Our solar panel calculator provides an easy estimate of the number of solar panels needed to power your home. All you need to know is the amount of your energy bill for the last month and your utility company.

The solar power calculator produces a ballpark estimate just from an average monthly power spend.

Does how much power solar panels produce in your city affect the cost of solar for your home?

The National Renewable Energy Laboratories (or NREL) have produced sophisticated and accurate data that shows how much electricity solar panels produce (in kWh) for over 1,000 weather locations throughout America. This is why almost every solar energy calculator uses the NREL PVWatts data for their solar panel kWh production calculations.

Enter your zip code and average monthly power spend to estimate how many solar panels you need for your home

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Will solar save you enough to get a short payback period on the upfront cost of a solar panel system for your home?

The solar savings estimator will also calculate how much solar will save you. The size of your solar savings depends largely on how expensive utility electricity is in your region, what the future rate of utility price inflation proves to be, and of course – how much power you use.

Solar payback periods can now be as little as 5-6 years, leaving homeowners installing solar to enjoy 20 years or more of free electricity once the panels are paid off. The solar calculator will work to determine your solar payback period.

Here is an example of how much a financed 6kW solar system in California saves a PG&E customer with a $168 current electric bill.

Monthly Savings Year One: $38

How much a financed 6kW solar system in California saves a PG&E customer with a $168 current electric bill

How to Buy Solar Panels

Are you thinking about buying a solar panel system but don’t know where to start? You came to the right place!SEI PV Design ManualA Really Great Read

Before we dive in to the specifics of solar panels (a.k.a. PV modules, solar electric panels), let us remind you that energy efficiency and conservation are the best ways to reduce your energy foot print and your electrical bill (see our Energy Efficiency and Your Home article). Please actively explore and incorporate all avenues of efficiency before pursuing a home solar panel system. That being said, solar power is an exciting clean-energy option that is becoming more and more popular. Solar electricity is a fascinating topic. To really feed your curiosity, we highly recommend the book PHOTOVOLTAICS: DESIGN & INSTALL MANUAL.

What shapes, sizes and types do solar panels come in?

Solar panels vary in length and width and are often about 2 inches thick. They are generally about 30 pounds or less, but the larger solar panels can be cumbersome to carry onto the roof. We carry a wide selection of solar panels for home use: framed, foldable, and rollable.

  • Framed solar panels are the industry standards. They are the most cost effective and applicable for most home solar panels applications.
  • Foldable solar panels are lightweight (less than 5 pounds) and can fold up and fit easily in a backpack.
  • Flexible (or rollable) solar panels are also lightweight but bulkier than the foldable panels. Many people use these rollable solar panels on boats because they are durable and can be easily stowed after use.

Generally thin-film laminate type of solar panels (foldable & flexible) are more expensive per watt and require more square footage to produce the same wattage of an equally sized framed module.

What size solar panels do I need for my home and how many?

The number of solar panels you will need depends primarily upon the amount of electricity you are trying to produce and the insolation in your area. Solar insolation can be thought of as the number of hours in the day that the solar panel will produce its rated output. This is not equivalent to the number of daylight hours. Read more about insolation in our How To section and get an idea of the insolation in your area: Solar Insolation Map – USA.

You’ll find solar panels in a variety of wattages. Watts are the main measure of a solar panel, along with nominal voltage. For a rough idea of how many watts of solar panels you will need for your home, start by dividing your electrical usage (in watt-hours per day) by the solar insolation in your area. Bump that number up by 30-50% (to cover system inefficiencies) and you’ll have an idea of the number of watts of solar panels total you will need. If that number is more than 1000 watts, you are talking about $4K to $8K or more for the solar electric system. (Could we take this opportunity to mention the importance of energy efficiency again?!) If you could still use a little help with the math, please give us a call and tell us how much electricity you are trying to produce (in kwh/month or watt-hours/ day) and your location, and we’ll help get you started.

What types of solar panels are there?

Most solar panels can be classified as monocrystalline, polycrystalline or amorphous. This is based on the silicon structure that comprises the cell. It’s not quite as complicated as it sounds. Basically a 100 watt monocrystalline solar panel should have the same output as a 100 watt polycrystalline solar panel and a 100 watt amorphous solar panel. The main difference is the amount of area which the solar panel occupies. Because the monocrystalline structure is more efficient than amorphous (and only very slighlty more so than polycrystalline) in turning sunlight into electricity, the amorphous solar panel of the same wattage will be physically larger. By the way, when talking about efficiency of solar panels, keep in mind that solar panel efficiency is still only about 13-18% efficient in turning sunlight into electricity. Often amorphous solar panels are less expensive than the crystalline panels. If space is not an issue, then an amorphous panel could be a great option. Additionally, amorphous solar panels perform better than crystalline solar panels in very hot temperatures and are also slightly more tolerant of partial shading.

Solar Energy for Home Heating & Cooling

Please keep in mind that solar panels produce electricity, and should not be used to produce electricity for heating or cooling sources. If heating is your main issue, be sure to check out Solar Air Heaters and Solar Water Heaters. Solar air heating and solar water heating are examples of solar thermal technologies which produce heat, but not electricity (and are much more cost effective than solar panels). While solar electric panels are not an economically feasible choice to power your air conditioning, a solar panel can power an attic fan that can help reduce the amount of time you use your AC.

Locating your Panels – Very Important!

A key factor in the effective use of solar electricity is proper placement of the solar panels. Make sure to locate the panels where they will receive full sunlight between the hours of 10 am and 3 pm. Be sure that the solar panels will not be shaded by shadows from tree branches, chimneys, other structures, etc. Once again – NO SHADE! You will be mounting the solar panels on the roof, the ground or a pole. For more information on the proper placement solar electric panels, please checkout the How To for Solar Panel Mounting article.

How Long will Solar Panels Last?

Solar panels use the sun’s light to generate electricity. They generate electricity during sunny daylight hours and can be used in a system with batteries so that the electricity can be used at other times as well. Also known as Photovoltaic (PV) modules, solar panels are the main component of a solar electric system. Along with an inverter, mounting system, batteries and Solar Charge Controllers, solar panels can produce electricity to power the energy efficient appliances and lights and appliances in most households. Solar panels themselves generally last over 25 years, and require little maintenance. Many of the first solar panels produced in the 50s are still in use today. Many of the solar panels have a 20 year warranty or more. A common warranty states that the panels will produce at least 80% of their rated power after 20 years.

What else will I Need with a Solar Panel?

In addition to the solar panel mounting hardware, there are additional components that you will need for a safe installation. If you plan on using just one solar panel in a battery based system (an off-grid system), you will need a solar charge controller and overcurrent protection to protect each major component of your system: solar panels, solar charge controller, deep cycle batteries, and inverter. If you plan on using more solar panels in your system, you will also need to safely wire the photovoltaic solar panels together and to the charge controller. An easy and safe way to do this is by using MC (multi contact) connectors. These connectors connect to the cables coming from the solar panel and can be cut in half to expose bare wire. Combiner & pass-through boxes are used to collect the bare ends of the wire from multiple solar panels; then from the combiner box you can run just one set of wires to the solar charge controller. For each series string of solar panels, you will need an appropriate sized breaker.

That’s a lot of components to figure out! If after reading all this you are a little confused but even more excited about solar energy, what’s next? Well, you can read more about solar panel systems. Also, our AltE U offers in-person workshops in Massachusetts and Ohio, as well as free education online videos. If you are considering installing your own solar electric system or installing PV (photovoltaic panels) as a business, be sure to check out our series of three classes beginning with our Basic Photovoltaic and Site Assessment class.

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