10 Things To Know Before Installing a Solar Panel on Your Roof – Nigerian Tech (2023)

The ability of some materials to create an electrical charge from light exposure was first observed in 1839,

The climate is changing rapidly, and most people are getting aware of the problems facing the earth such as excessive plastic use, and carbon footprint. With all this happening, a lot of people in Nigeria and Africa to be precise are finally coming to terms with the fact that the shift to solar panels are inevitable in the coming years.

A single solar module can produce only a limited amount of power; most installations contain multiple modules adding voltages or current to the wiring and PV system.

Solar panelsare installed to produce energy in an environment-friendly manner. More and more people living in Nigeria are choosing this lifestyle for their homes and offices.

These people like the idea of conserving energy and using sustainable materials that don’t add up to the effect of the green house.

Solar panels are not only great for the environment, but they have some other benefits too.

Installing solar panels is an easy way to save money on your electric bill as you minimize your carbon footprint as well. However, for some people, solar panels have their advantages and disadvantages.

Currently, the best achieved sunlight conversion rate (solar module efficiency) is around 21.5% in new commercial products. Typically lower than the efficiencies of their cells in isolation.

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The most efficient mass-produced solar moduleshave power density values of up to 175 W/m(16.22 W/ft).

10 Things To Know Before Installing a Solar Panel on Your Roof – Nigerian Tech (1)

If you have got intentions of installing solar panels on the roof of your home even if you reside in Nigeria, south Africa, Ghana, Mozambique, kenya or any part of Africa, then you should keep on reading this article because it is filled with the information about the things you are required to know before installing a solar panel on your roof.

1. How many solar panels are needed to run a house?

This is part of the very first questions that should be crossed out with an answer before going forward to install a solar panel on your roof, Depending on the type of house you’ve got, a bungalow house might need just eight solar panels to power a house.

While a duplex will generally require about sixteen solar panels to completely cover your electrical power needs.

Also if you will want to heat water for your family if its an average family of four, you’ll be required to get two solar thermal panels will be needed to get that done. and if its a large family of eight then six thermal solar panels will be required to heat water too for the family.

2. Are Solar Panels Great For Your Needs?

While solar panels have the reputation that they will definitely prove beneficial for everyone, these advantages are limited to some people the reason is because,Some people require more energy for their house, and it can become a little problematic if they install the solar panels.

The major benefit of solar panels is that they save your electricity bills. However, if you do not do proper research about your power needs, it can end up costing you more money than you made available for your budget.

If you require more power in your home, then you will need to install more solar panels, which means that you will need to invest more in the whole procedure.

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If you install solar panels and later on find out that they are not a good fit to provide the necessary power, you will only regret your decision i am sorry to say that but its the hard truth.

3. What Are The Main Disadvantages of having Solar Energy?

There are some disadvantages that comes with having a solar panel. You just have to know this things just incase so here are some of the disadvantages of having a solar energy.

  • Solar Energy Storage Is Expensive
  • Uses a Lot of Space
  • Associated with Pollution
  • Cost. The initial cost of purchasing a solar system is fairly high
  • Weather Dependent. Although solar energy can still be collected during cloudy and rainy days, the efficiency of the solar system drops.

4. What Are The Costs Involved?

Always be sure that before you even think about getting the solar panels for your house, you need to set and prepare your budget and also do your research on all the costs involved in acquiring the solar panel.

Most people go over board with the idea that because they are under the impression that the solar panels are cost-effective.

While it is true that solar panels save money, that may not be the case for you if you do not do your due diligence properly.

Every country has its own prices and laws, and that means in your area or region, the costs could vary.

The best way to go about this is by getting a professional solar provider that has great user ratings and reviews. You can see some companies at the end of the article.

Your solar provider will be able to provide you with all the necessary information. If you think that you are not comfortable with the billing, you can pick someone else and do ensure to not go further with the negotiations.

5. How Long Do Solar Panels Last?

Dear reader, you don’t just wake up one morning and decide to purchase and place a solar panel on the roof of your home.

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Believe me, when i say you need to do some research and know some things about installing the solar energy things like; “how long the solar panels last” you see for instance the crystalline panel which is one of the types of solar panels there is, and it will guarantee to last for 20-25 years, while the film panels which is another type of solar panel are only guaranteed for 2-5years.

The regular warranty for photovoltaic solar panels last for as long as 25-28years.

6. Is Your Roof The Right Place To Install The Solar Panels?

While some roofs are better suited for solar panels than others. The first thing you need to know by yourself is whether you are going to upgrade your roof in the next few years or not?

It is better to get all the pending upgrades out of the way before hand. Once your solar panels are installed, it will get expensive to make any further changes once all that is done.

On the other hand, if you think a roof update is needed in the future, it is better not to install the panels. It is very difficult to get them off later on after it has been installed.

Another thing you should know about is how much shade your roof gets. Is it at the right angle? The right angle means that your roof needs to get maximum sunlight as that is the primary source of energy in this case.

If your roof is not at the right angle or does not have enough space for direct sunlight, you will have to install the panels in your backyard, and that won’t be as productive as you will want it to be.

After considering all the factors related to your roof, if you think that installing solar panels on your roof is not a good idea, you can invest in community solar.

You would get a discount on your electricity bill this way even if you live in a place that is not very solar-friendly. i do think this second option is top notch to unite and bring people together. and its a good one if you ask me as community solar is the way to go.

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7. What Are The Important Uses of Solar Panels?

I know that this particular question will come up before any initial move will be made to install a solar panel on your roof. There are various ways in which the solar energy is used in todays world here are a few for you to look at before you make your decision.

  • As heat for making hot water, heating buildings, and cooking.
  • To generate electricity with solar cells or heat engines.
  • To take the salt away from sea water.
  • To use sun rays for drying clothes and towels.
  • It is used by plants for the process of photosynthesis.

8. Is Your Location Appropriate For The installation of the solar panel?

Ihave already touched on the importance of sunlight when installing solar panels. In the case of solar panels, sunlight is the most important factor, and its presence and absence can affect your solar panel’s performance.

Be advised that where you install the solar panels is highly important so you have to keep in mind the weather in your area where the solar panel will be installed. Is it mostly sunny or cloudy? Some regions generally have short days or rainy/cloudy days most of the time.

Solar panels create energy by converting solar power from the sun, which means that its performance is already cut into half as it won’t work during the night. It is imperative that it gets the maximum amount of sunlight during the day so it can perform well and give enough energy to power the whole house effectively.

9. Should You Clean The Solar Panels?

For optimum performance a solar panel needs to be made of similar modules oriented in the same direction perpendicular towards direct sunlight. The path of the sun varies by latitude and day of the year and can be studied using a sundial or a sun chart and tracked using a solar tracker.

Well, Unless you live somewhere with a high amount of dust, dirt or sand. Cleaning of the solar panel is not really necessary, at most rain falls which happen occasionally like somewhere in lagos state Nigeria, will be enough to naturally and safely keep your solar panels clean. And free from clogs and dust that can lead to lower production of the power supply.

10. What Kind Of Solar Should You Go For?

There are two dominant solar technologies that you can pick from. These dominant solar technologies are photovoltaic and thermal. Photovoltaic uses arrays of cells and then turns sunlight into electricity.

While in the case of thermal, the panels use sunlight to heat water for use inside. The choice basically depends on your needs. If your home requires a lot of energy for heating, or it is expensive to heat fuel in your region, you should go for solar thermal investment.

These are the things you need to know before you decide to install the solar panels on the roof of your home.

(Video) Lifep04 Solar installation in Edo state Nigeria(DUPLEX)

You can also check out for thetop-10-solar-companies-in-nigeria


Which direction should solar panels face in Nigeria? ›

However there is a difference between magnetic south and true south that must be considered. Magnetic south is the "south" shown when a compass is used, and this south points to the Earth's south magnetic pole. Solar panels, however, need to face solar or geographic south, which is the direction towards the South Pole.

What questions should you ask before installing solar panels? ›

7 Questions You Should Ask Your Solar Company
  • Can you go over the design you are proposing? ...
  • How much am I saving with solar? ...
  • What rebates and incentives are available to me? ...
  • What warranties do you offer on labor, materials, and production? ...
  • How do I finance my solar panel system? ...
  • Is it safe to install during COVID-19?
21 Jan 2022

What is the first step to do during solar panel installation? ›

The very first step is to analyze your electricity bill before starting the solar panel installation process. By looking at your electricity bill, you will get an idea about your monthly consumption in kWh.

What position is best for solar? ›

The most optimum direction to face your solar panels is somewhere between south and west. It is at this location that your panels will receive the maximum sunlight throughout the day. If your roof does not face the right direction, then surface mounted panels or pole mounted panels may be your best bet.

What angle is best for solar panels? ›

For most homeowners, the ideal angle for a solar panel installation is close to or equal to the latitude of your home. This angle is typically between 30 degrees and 45 degrees. Doing so ensures your home will get the maximum average output from your solar power system throughout the year.

Where is the best location for solar panels? ›

The roof is the best place for solar panels because it receives the most uninterrupted sunlight throughout the day. If your roof doesn't face south, you're not out of luck. Some solutions for roofs without a southern face include: Adding more or larger panels on the east or west side to compensate.

What to do after installing solar? ›

What happens after I install my solar panels?
  1. 1- Inspection. Once the panels are installed, the next step is the electrical inspection. ...
  2. 2- Meter upgrade. Following this inspection, your installer sends the required document to your electricity retailer. ...
  3. 3- Start saving! ...
  4. 4- Maintenance.

How long does it take for solar panels to start working? ›

Depending on the utility, this can vary dramatically, but some estimates say it will take three to eight weeks after installation to get permission to operate.

What are 5 questions about the solar system? ›

Important Solar System Questions with Answers
  • 1) How many planets are there in the Solar System? ...
  • 2) Which planet is the closest to the Sun? ...
  • 3) Match the following. ...
  • 4) Solar System is located in _____ galaxy. ...
  • 5) Why is it called the Solar System? ...
  • Q6) Where do most comets arrive from? ...
  • 7) How did the Solar system originate?

What are 4 main problems associated with installing solar in your home? ›

Nine Common Problems with Solar Panels
  • Delamination and internal corrosion. If moisture finds its way into the panel, it can cause internal corrosion. ...
  • Electrical issues. Faulty wiring prevents your solar panels from performing well. ...
  • Micro-cracks. ...
  • Hot spots. ...
  • PID effect. ...
  • Birds. ...
  • Snail trails. ...
  • Roof issues.
16 May 2019

How do I calculate the size of my solar system? ›

To figure out how to size your solar system, take your daily kWh energy requirement and divide it by your peak sun hours to get the kW output. Then divide the kW output by your panel's efficiency to get the estimated number of solar panels you'll need for your system.

What is required for a successful solar panel? ›

To generate your own energy, you need a complete solar power system. The essential components: Solar panels, to capture energy from the sun. An inverter, to convert that energy to a format that can power your appliances.

How much does it cost to install solar panels in Nigeria? ›

Installing solar in Nigerian can cost from ₦100,000 to ₦15,000,000 for a solar home system for homes and offices depending on the capacity you want to install in your home or office space.

What is the angle and direction of solar panels? ›

To achieve that goal, most solar panels face the equator (in the US, that means south-facing) and are installed at an angle between 30 to 45 degrees relative to the horizon. For homes in the northern hemisphere, solar panels should face south. For homes in the southern hemisphere, solar panels should face north.

How many solar panels would it take to power a house? ›

Key takeaways

The average home in the U.S needs between 16 and 20 solar panels to cover its electric bills. Three main factors impact how many solar panels you need: your energy usage, the sunlight in your area, and the solar panels you choose.

What side of roof is best for solar panels? ›

Is Your Roof Solar Ready? The best position for solar panels is towards the south, but even west and east facing roofs can accommodate solar. A 30-degree angle is suitable for the best year-round solar production, but anywhere from 15 to 40 degrees can be great as well.

Do solar panels work at night? ›

The short answer is: no, solar energy systems only operate during the day.

What temperature is best for solar? ›

Solar panels are generally tested at about 77°F and are rated to perform at peak efficiency between 59°F and 95°F. However, solar panels may get as hot as 149°F during the summer. When the surface temperature of your solar panels gets this high, solar panel efficiency can decline somewhat.

What is the best height for solar panels? ›

Roof structure

Generally, it is more economical to install solar panels on roof heights below 60 feet.

How do you know the direction of solar panels? ›

How can you determine the optimum angle for solar panels for your state? There's a simple rule of thumb for calculating the best tilt angle for fixed-mount solar panels. Subtract 15 degrees from the latitude at your location during summer and add 15 degrees to your latitude during winter.

What is the best shape for solar panels? ›

The scientists found that the conical-shaped panels gave the best thermal performance, based on measurement of the minimum back-side temperature. The temperature difference was greatest between the conical-shaped and pyramid-shaped solar panels (around 10.9 degrees Celsius).

What time of day do solar panels work best? ›

As the afternoon progresses into the evening, the intensity of light will diminish and when the sun goes down solar power generation will be nill. So, generally speaking, the best time of day for solar panels will be between 11am and 4pm.

How long do solar panels last? ›

Solar panels, also known as photovoltaic or PV panels, are made to last more than 25 years. In fact, many solar panels installed as early as the 1980s are still working at expected capacity. Not only are solar panels remarkably reliable, solar panel longevity has increased dramatically over the last 20 years.

Can solar panels be placed anywhere? ›

Ground-mounted solar panels can be installed any place on your property that has sufficient open space and good sun exposure. The panels can be placed anywhere from a few inches to a few feet off the ground, depending on how the racking system is set up.

What happens after 20 years of solar panels? ›

NREL data shows that solar panels have a degradation rate of roughly 0.5% per year. So after 20 years of use, a solar panel would be capable of producing roughly 90% of the electricity it produced when it was new. Based on that information, solar panel manufacturers typically offer warranties of about 25 years or more.

Do solar panels work immediately after installation? ›

Unfortunately, you won't be able to start producing renewable energy immediately after the installation is complete.

What happens after solar panels expire? ›

Do solar panels go bad? There is technically no expiration date on solar panels. However, over time, they naturally tend to become less efficient at producing energy. Some panels can also break due to physical damage from extreme weather conditions.

How many hours a day do solar panels work? ›

So, even though the average day is exactly 12 hours, the power you actually get on your panels is equal to about 5 to 6 hours of full sun per day. Since the typical modern solar panel is about 12% efficient, you will get about 700 watts per square meter of panel.

How do I know if my solar is working properly? ›

Read Your Solar Meter

Typically, your meter will cycle through different screens. You should pay particular attention to the one that displays the total kilowatt-hours that your solar panels are generating. As long as your kilowatt-hours are increasing, your solar panels should be working fine.

Can solar power work 24 hours? ›

During day time the solar pump utilizes solar energy for operation and during night the energy stored in the solar power backup system is used to run the pump. Thus, the continuous flow of water keeps generating power 24x7.

What are the 3 types of solar panels? ›

In this blog we will explore the main three types of solar panel cells: polycrystalline, monocrystalline and thin-film. Understanding the difference between the three, is the very first step to selecting your perfect panel for your home, business or community.

What is the most important material in solar panels? ›

Silicon. Silicon is, by far, the most common semiconductor material used in solar cells, representing approximately 95% of the modules sold today. It is also the second most abundant material on Earth (after oxygen) and the most common semiconductor used in computer chips.

What are 7 things in our solar system? ›

Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids.

What are the 8 things in our solar system? ›

Our solar system is made up of a star—the Sun—eight planets, 146 moons, a bunch of comets, asteroids and space rocks, ice, and several dwarf planets, such as Pluto. The eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Mercury is closest to the Sun. Neptune is the farthest.

What is the biggest problem with solar panels? ›

One of the biggest problems that solar energy technology poses is that energy is only generated while the sun is shining. That means nighttime and overcast days can interrupt the supply.

What causes solar panels to fail? ›

Generally, solar modules can be expected to degrade by 0.5% to 3% a year. There are four main factors that contribute to normal degradation, all from natural causes: thermal cycling, damp heat, humidity freeze and ultraviolet (UV) exposure.

What are 3 challenges of using solar energy? ›

Disadvantages of Solar Energy
  • Cost. The initial cost of purchasing a solar system is fairly high. ...
  • Weather-Dependent. Although solar energy can still be collected during cloudy and rainy days, the efficiency of the solar system drops. ...
  • Solar Energy Storage Is Expensive. ...
  • Uses a Lot of Space. ...
  • Associated with Pollution.
7 Oct 2022

What are the two main problems with using solar energy? ›

In general, the disadvantages of solar energy include high cost, low efficiency, space needed for installing solar panels, the unreliability of sun exposure, and high pollution from manufacturing solar panels. Concentrated solar power plants are massively expensive to install with very low return on investment.

Can solar panels go on any roof? ›

For a solar panel to generate the most power, it should ideally be facing true south. Roofs that face south-west and south-east are also considered highly efficient, while properties with an east or west facing roof will lose approximately 15% efficiency compared to a south facing roof.

Are solar panels on your roof a good idea? ›

Your Roof Value May Increase

The bottom line is this; Having solar panels installed on your roof not only helps you keep your electric bill down and is safer for the environment, but you can significantly increase your overall home value just from having the installation done.

What other elements you need for your rooftop solar panel system? ›

In order to go solar, you need solar panels, inverters, racking equipment, and performance monitoring equipment. You also might want an energy storage system (aka solar battery), especially if you live in an area that doesn't have net metering.

How many solar panels fit on a roof? ›

The average roof size in the United States could fit about 97 solar panels. This amount of solar panel could provide approximately 31 kW (kilowatts) of electricity. But the average American only needs 19- 23 solar panels to power their home.

What is the best angle for solar panels? ›

For most homeowners, the ideal angle for a solar panel installation is close to or equal to the latitude of your home. This angle is typically between 30 degrees and 45 degrees. Doing so ensures your home will get the maximum average output from your solar power system throughout the year.

How many solar panels go on a roof? ›

A typical home needs between 18 to 26 solar panels to cover 100% of its electricity usage. While there are many elements you can analyze to determine the ideal size of your future solar panel system, we want to discuss the four that are most worth your time: Your household energy consumption.

What is the most important part of solar panels? ›

Inverters Inverters are a crucial part of any solar energy system. Their purpose is to convert the DC electricity that the solar panels produce into 240V AC electricity, which is what powers everything in your home.

What are 3 important uses of solar panels? ›

The most commonly used solar technologies for homes and businesses are solar photovoltaics for electricity, passive solar design for space heating and cooling, and solar water heating.

Do solar panels cause roof leaks? ›

In virtually all cases, the answer is no. Roof leaks after solar panels are extremely rare. When roof leaking after the solar panels are fitted does occur, however, it usually becomes evident very quickly after the installation process is finished.

How long does a solar battery last? ›

How Long Does a Solar Battery Last? Home solar battery units last anywhere between 5 and 15 years. If you decide to install a solar battery today, it's almost certain you'll need a replacement in the future to match the 20- to 30-year lifespan of your solar power system.

What do solar panels require to work properly? ›

Solar panels work best in direct sunlight, but can also work without it. Solar panels produce electricity using a combination of direct and indirect sunlight as inputs. Both forms of sunlight carry photons, which is what the solar panels convert into electric current.


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