How Many Solar Panels Need To Power A House?

Solar Energy 7 Mins Read Rashmi Chaudhuri Mar 19, 2022
How Many Solar Panels To Power A House

We are all now fighting with environmental pollutants substances. Solar power systems are a great savior for continuing these transmissions. Currently, solar panels for domestic uses are readily available. However, industrial power and solar power storage systems are still under process. When you adopt a solar system, this is counted as the great movement for environmental protection. This is also a great effort to control your excessive electricity bills before adopting a solar system for your domestic use. You have to know how many solar panels to power a house you require. And how you can store the excess energy.

How Many Solar Panels Do You Require To Power A House?

You want to power your whole house with solar power. Then the first thing you will understand is that you require a very stable storage system. Then you have to know how many solar panels to power a house. How do you count the exact amounts of solar panels?

To get the exact measurement of the solar panel’s numbers, you have to count two things.

Your Monthly Power Consumptions

For knowing how many solar panels to power a house, you have to calculate the actual monthly consumption of your house. For example, most users ask, ‘ for 1000 kWh per month’.The average domestic use solar panel size is about five and a half feet by three feet. And these panels are generating 250 watts of power which is nearly 1,000 kWh per month.

So you have to calculate the actual power consumption of your house. Then calculate the exact power generations of every panel after dividing the total power consumption by every solar panel’s power generation.

Solar Power Generations In Your Place

Solar Power Generations In Your Place

Do you have any idea about how much power a solar panel produces? As I already told you, a single five and a half feet by three feet solar panel is generating nearly about kWh per month. These solar power calculations can vary from 80kWh to 130kWh. These solar power generations can vary depending upon the sun’s hours.

Four to five hours once a day for the solar charge is enough for generating 115kWh per day.

Many of the users also have some queries, like can solar panels power a whole house. Yes, through the residential solar system, you can generate power, which is enough for the entire house. But you have to keep some points in your mind. Your power generations can fluctuate depending on the solar hours of the day.

These are two things you have to find before installing the solar system on your roof. First, you only have to divide the total solar power requirements with every panel’s generated powers. You can have the exact numbers of solar panels through this dividing process.

How To Calculate The Number Of Solar Panels Needed To Power A House?

To calculate the solar panel numbers, you only require two pieces of data. Here is the whole guidance for you. Read it and know How Many Solar Panels To Power A House.

1. Your total power generations requirements for your house

You are purchasing the solar generator for the house. But before installing it, know the exact requirements of your house.

For example, If your house’s current requirements are average monthly power consumption of 900 kWh. Then what are the answers for how many solar panels to power a house?

2. Your solar panel’s power generations capability

The correct answer for how many solar panels you need to power a house is easy. Your monthly solar power generations are 110 kWh.

The average monthly solar panel’s power generations are 900 kWh / 110 kWh = 7.82 kW.

If each of your solar panels is generating 330 watts;

Then you will require 7.82 kW/ 330watt = 23.66, which is nearly 24 panels.

The portable solar power system is not as powerful as the fixed solar panels. But you can run some of the minor household chores like AC operating, charging, etc. If you have a caravan or house van, you can install the solar panels on top of your caravan and enjoy the power.

Is Power Generations Vary From One Place To Another?

Yes, in cold countries, the sun is not always visible. Even not in the cold nations. Every place is cloudy and foggy. The sun hours are less than the tropical areas. For complete charging of the solar panels, you will require more than 6 hours.

You have to use the SunPower monitoring system to know the same power. And calculate the sun hours where you plan to set up a solar panel. Depending on the sun’s hours and season, the solar power generations vary from one place to another. So before buying the whole solar system, check the solar hours and calculate the actual sun hours on different seasons. So the answer can vary for how many solar panels to power a house.

4 Factors Which Are Influencing The Solar Panels Numbers

Now You Know How Many Solar Panels To Power A House. But do you know there are also some other factors that are also present? Which can influence the numbers of solar panels? Yes.

Here are four factors. Depending on these factors, your solar panel’s numbers can vary.

1. Shadowed Areas In Your Solar Panel

Shadowed areas mean. And some of the panels do not get enough power. For these types of cases, you have to improve your solar panel’s numbers.

2. The Solar Panel Orientations

The panel’s orientation depends on the country’s equator’s position. Southern country’s solar panels should be on the southern sides. Sun changes the direction of the different seasons. So you have to keep those things in your mind.

3. Solar Panels Inclinations From The Ground

You have to change the directions on the basis of the solar panel’s positions. And You can measure the sun hours and depend on the sun hours. You can set up your solar panels.

4. Dust And Snow On The Panels

Dust and snow are covering the panels, and these coverings are going to be a very big barrier. Your solar panels do not get enough charges. And as a result, your solar panels are starting to lack charges. You already know how many solar panels to power a house. But in these types of cases, you have to increase the panel’s numbers.

How To Calculate How Many Solar Panels You Need?

How To Calculate How Many Solar Panels You Need

“Calculating how many solar panels you’ll need to meet your energy needs depends on several factors. The easiest way to fiend out how many panels you’ll need is to use our Dolar Calculator. When you put in your address and estimate monthly power bill, we’ll do all of the math for you so that you can make an informed decision.”

Annual Electricity Usage  

“Your annual electricity usage is the energy you use in your home over a year. Measured in kilowatt-hours (kWh), this number is influenced by the appliances in your home that use electricity and how often you use them. Refrigerators, air conditioning units, small kitchen appliances, lights, chargers, and more all use electricity.”

Solar Panel Wattage  

“Also known as a solar panel’s power rating, panel wattage is the electricity output of a specific solar panel under ideal conditions. Wattage is measured in watts (W), and most solar panels fall in the 300 – 400+ W of power range.”

“We’ll use 400-watt panels in these calculations because 390-400 W is the most quoted capacity range on the EnergySage Marketplace.”

Production Ratios  

“A solar panel system’s production ratio is its estimated energy output over time (kWh) to its actual system size (W). These numbers are rarely 1:1 – depending on how many hours of sunlight your system will get (primarily based on your geographic location), your production ratio will change accordingly.”

Let’s Do The Math!   

The formula goes something like this:-

Number of panels = system size/production ratio/panel wattage.

Let’s take this for example,

“A 10 kW system that produces 14 kWh of electricity in a year has a production ratio of 1.4 (14/10 = 1.4) – this is an entirely realistic production ratio to see out in the real world. In the U.S., production ratios are usually anywhere from 1.1 to 1.7, so we’ll use those two numbers as the high and low estimates for our calculation.”

Number of panels = 10,632 kWh / 1.1 or 1.7 / 400 W

That gives us something between 15 and 25 panels in a solar array.

Frequently Asked Questions About Solar Panels Numbers:-

Q1. How Many Solar Panels Are Required To Run A House Off-Grid?

Ans: Most of the data suggest a typical 2,000 sq ft home requires 11,000 kilowatts of power annually. 13 to 20 solar panels are enough for this size of home. The total consumption can vary. Depending on the total consumption, you can change the solar panel’s numbers.

Q2. How Much Does The 1000 Kw Solar System Cost?

Ans: The higher quality panels are capturing more energy. After installing the solar system, your solar panels are generating every Watt with $2.80 and $3.80.Most of the residential systems can run between 4 and 15 kW. So you can do the rest of the calculation.

Q3. How Much Power Can A 12kw Solar System Produce Per Day?

Ans: 12kW or 12 kilowatts of power is produced by DC direct current power. This power is estimated at 1,800-kilowatt-hours. Therefore, the alternating current for your solar panels per month only requires five hours of direct sunlight when every solar array faces south.

Wrapping Up:

The actual answer for how many solar panels to power a house is 24 to 20 no of solar panels. The standard residential solar panels can quickly generate more than 330 watts. So for powering the whole home, you will require approximately 23 to 24 numbers of solar panels. The number of solar panels depends on your location and the sun’s hours. So keep following these calculations. And find out what numbers of solar panels you will require for powering the whole house.

Reading Also:

Rashmi Chaudhuri


Rashmi Chaudhuri a passionate traveler and the natural beauty trends concerning the professional content writer. She loves writing about beauty, travel, animals, sports, and health. She is a freelance writer who loves to write SEO-friendly contents about these topics with expert writing skills.

View All

Rashmi Chaudhuri a passionate traveler and the natural beauty trends concerning the professional content writer. She loves writing about beauty, travel, animals, sports, and health. She is a freelance writer who loves to write SEO-friendly contents about these topics with expert writing skills.

Leave A Comment

Your email address will not be published. Required fields are marked *

Save my name, email, and website in this browser for the next time I comment.