How Much Electricity Does a Solar Panel Produce

How Much Electricity Does a Solar Panel Produce?

The amount of electricity a solar panel produces depends on three things:

  • Size of the panel
  • The efficiency of the solar cells inside
  • Amount of Sunlight the panel gets

What is a Solar Panel?

A solar panel is a photovoltaic panel designed to absorb the sun ray to produce electricity or heating. The typical solar panel is about five and a half feet tall and 3 feet wide.

Each solar panel has approximately sixty little squares. These squares are individual solar cells, which are linked together by wires.

Inside each individual solar cell is where the electricity is made; electricity is then carried by the wires to a junction box where the panel is hooked into a larger array. The amount of power a solar panel makes is based on the wattage of the solar panel.

The residential solar panels available in 2018 contain 60 solar cells joined together to produce around 260-300 watts, or they could have 72 cells joined together to produce between 360-400 watts.

The higher the wattage of a solar panel the more electricity it produces because it has access to more solar irradiation.

The amount of electricity solar panels produce also depends on average sunlight over the course of a year. To know this you need to find your place on the globe to see if your area is more cloudy, and therefore less available energy from the sun to convert into electricity.

Malaysia, for example, is a great place to produce solar energy. That is why the solar industry in Malaysia is expanding with several solar power companies and solar farms.

In Malaysia by February 29, 2018 the solar power capacity was at 140MW out of a total of 311.6MW, and the number of applications for solar as a source of power was 348 out of 377 applications under the Fit according to SEDA. This could give you an idea of how big the industry is in Malaysia.

How many solar panels are needed to power an average house?

The average house uses about 900 kWh per month. This is a lot and you can really save a big amount of money by using solar power.

So how do you calculate how many solar panels you need? Let’s take 900 kWh and divide by the amount of kWH one solar panel produces, that is around 30 kWh monthly. You will need 30 panels to produce 250 watts per panel to produce 7,500 kW.

Of course, before you install your solar panels, it’s recommended to consult a solar company. The expert will tell you how your solar power system should be depending on how much devices you use and your lifestyle, for example:

  • Light Bulb uses 60 watts
  • Laptops use 45 watts
  • Desktops between 150-300 watts
  • Window air conditioning range between 500 and 1500 watts
  • Central air conditioning can use 3500 watts.

All those devices add up with variations. Most of your electricity usage probably happens at night, but if you work at home this could change. Your solar installer will talk to you about all of the options.

How to Store Energy

Solar panels only generate power as the sun shines. This mean you will need a way to store the energy. One solution is to use a battery, but the majority of people prefer to stay connected to the grid. This option is easier and cheaper.

If your solar panels are producing more power than you are using, the excess power will go back into the grid. You can pull energy from the grid at night, or anytime you need extra power.

If you use a grid-connected system, you don’t have to worry if you need more power than your solar system provides. Make sure you talk to your solar installer about all the options, and which one is best for you and your home.

types of solar power systems

Types of Solar Power Systems

Malaysia is the perfect place for the generation of solar power. Malaysia’s location, which is near the equator, receives between 4,000 to 5,000 Wh per square meter per day.

With its unique advantage, the solar industry in Malaysia has grown in the last years, with the creation of solar farms and other solar power companies. Solar farms in Malaysia are considered one of the most resource-efficient in the world.

Some of these solar farms produce enough energy for 1,800 houses every day.

Are you aware that there are different kinds of solar power systems? In fact, the most common types of solar energy systems for homes are grid-connected, grid-connected with energy storage, off-grid, and DC systems.

The most common type among the four is the Grid-connected system, although grid connected with energy storage is becoming very popular despite the high cost of building it.

Let’s discuss more about the different types of solar power systems.

 

1. Grid-Connected System

This type of solar panel system is the most common one. It is connected to your local electric grid and your home. If your array generates more energy than what you use, it sends the excess back to the electric grid.

This way you are selling your extra solar power back to the utility company where it can be used by your neighbours or others.

This type of system requires a few panels, wiring boxes and disconnects and an inverter. Also, you have to make an interconnection agreement with the local utility company.

Advantages

  • Initial Cost: Purchasing a solar power system for your home can be very expensive. But grid-tied systems are much cheaper since they use less equipment than the other types of rooftop solar power.
  • Low Maintenance: The operating cost of grid-tied systems is very low. Solar panels have 20 to 25 years of warranty.
  • Reliability: Grid-tied system is simple and can have no downtime (without electricity).
  • Flexibility: You have the chance to design your system with an alternative energy source and a utility source. This way you can change the system to meet your needs in the future.

Disadvantages

  • The setback of this type of solar power system is that when the sun goes down, you are not able to use any of the energy that the solar panels produce. This can also happen if your electric grid is down; your solar panels will be shut off automatically, too, leaving you without energy.

 

2. Grid Connected Solar with Energy Storage

This type of solar power system is also known as hybrid solar. In the last couple of years, this energy system is becoming very popular, even though it’s more expensive.

It is similar to the grid-connected residential system, but comes with an energy storage system usually in the form of battery backup.

The hybrid system consists of a PV array, a charge controller, a battery bank and inverter and in some occasions a tertiary power source like a wind turbine or a gas generator.

Advantages

  • Energy Storage System: If your solar power system produces excess energy, it can be stored in the battery. So even if there is no sunlight, you can still power your home with solar power. If there is a power outage, your home will still have power for hours.
  • Save Money: The battery can provide additional opportunities to save money because your energy storage system can make sure you are using its power instead of the power of the grid.

Disadvantages

  • Cost: The system costs more because you need to change the batteries regularly. Although the cost of batteries has gone down in recent years, they still need to be replaced at some point.
  • High-Level Expertise: This solar power system is more complex so you may require a solar installer with a higher level of expertise to design and install. So make sure you find out from your solar power company if they install this type of system.

 

3. Off-Grid Residential Solar Panel System

The off-grid residential solar panel system is a lot like the hybrid system. It also uses solar panels and an energy storage system.

The off-grid system is installed in very rural, remote areas, where it is expensive to run a power line to a home.

The system is more expensive because it is bigger since it’s not connected to the electric grid. This requires more solar panels and batteries.

Advantages

  • Independence: One of the best things about this type of solar system is that you don’t depend on the utility company. You are not subject to the terms and policies of the utility company.
  • No Blackouts: Another benefit is that when everyone else has no electricity, your home will still have full power. This is very important with people with health conditions that require electronic devices or refrigerated medicines.
  • No Electricity Bills: Because you are producing your own electricity you will never again have to pay a bill to the utility company.

Disadvantages

  • Higher Initial Cost: If you don’t have a connection from the utility company, you will need a backup battery when there is no sun. Adding this source of backup will increase your solar costs.
  • Limited Solar Energy Storage: If the weather is cloudy for a few days and you don’t receive any sun, you may run out of stored electricity.
  • Energy Efficiency is a Must: You need to be very careful about your energy, or you may not have enough power for your home.

Should you go off-grid with solar power? Well, that depends on your main motivation.

If you want to produce your own energy, want an end to blackouts or eliminate your electricity bills, having this type of solar power may be right for you. It’s also highly suitable for those who don’t have any electricity connected to their home.

But if you just want to save some money, it can be more feasible to consider a grid-tied photovoltaic system instead.

4. DC Solar Systems

DC Solar System will power an RV or cabin, but this type of solar system doesn’t typically power a whole house. It differs from grid-connected solar power system because DC solar systems don’t use an inverter to convert DC electricity produced by the solar panels to the AC electricity used in most homes.

Instead, it provides electricity to DC appliances and/or a battery bank. This is the most basic type of solar power system, and it is intended to be used only when the sun shines. The system is very affordable and easy to install.

However, once the sun goes down, the power stops. It is perfect for remote locations that require low voltage. You can use this type of solar power system for certain things like:

  • Water Pumping applications
  • Venting Fans
  • Certain Electronics.

Advantages

  • High System Efficiency: Because there is only one conversion, DC Solar System is more efficient.
  • Simple Installation: A DC system can use only one inverter, which means simpler installation.
  • Easy to coordinate: Because DC system only has one inverter, it is easy to coordinate advanced functionalities that are required in some locations.
  • More energy to the battery: As the energy flow is not limited by the inverter capacity, the system is able to route more energy to the battery.

Disadvantages

  • High cost: You will need to spend a considerable amount to buy a DC solar system.
  • Solid sunlight required: DC system will only work when the sunshine is solid. You can use DC system when there is no sun, but the battery will need to be fully charged by the sun.

These are the four different types of solar panel systems that are available for homes.

To know which type to use for your house, review your requirements with a professional solar installer who will be more than happy to explain to you and offer you the available options.

 

solar panel with high rise building behind

Solar Energy Can Improve Nation’s Well-Being

With the recent allocation of RM260.8 billion in the 2017 Budget for operating and development expenditure, the government has such implementation to protect the people’s wellbeing and the environment, which is in line with the Islamic point of view on the concept of self protection (hifdz al-nafs) and protection of environment (hifdz al-bi’ah).

This programme aims to enhance the resources of the lower-income group located in northern Peninsular Malaysia which allows them to reduce power usage and generate income by selling surplus electricity.

In line with the services offered by Solarvest, which aims to produce cleaner and affordable alternatives available, the company ensures customers the installation of solar PV system will save power consumption while enjoying effective energy conversions. Solarvest also conducts a unique mounting method that reduces roof leaks.

solar panel with sunset view

Solar Power is Now the Cheapest Form of Energy in Almost 60 Countries

Solar power has been verified as the cheapest source of new energy in lower-income countries, allowing corporations and governments to prioritize it compared to coal and gas for renewable sources.

According to Bloomberg New Energy Finance (BNEF) in 2016, the average price of solar energy in almost 60 countries dropped to US$1.65 million per megawatt while placed first is the wind at US$1.66 million per megawatt. The cost of solar power depends on the availability of sunshine, energy contracts that are in place and government subsidies, since it is still not the cheapest source around the world.

The service has been expanding due to its dropping costs of equipment, growing investment and business corporations like Solarvest that provides top-notch installation proves on the solar PV system. Solarvest, the leader in the Malaysian solar power business offers full-service on small scale to large-scale projects.

willmill wind power

BMI Research: Malaysia in World’s Top Three for Renewable Energy Investment

Malaysia is among the top three global investment destinations for renewable energy, according to BMI Research. This can be attributed to several factors, including a favourable economic and politically stable business climate, in addition to a “buoyant macroeconomic outlook” as well as potential growth in the renewable energies industries, especially wind and solar power.

With that in mind, the country’s renewable energy sector has been growing rapidly, building a solid platform on which its renewable energy players can thrive.

Equipped with a passion for renewable energy sources, Solarvest is unwavering in its commitment to championing a unique business that is environmentally friendly. To this end, the company has the distinction of being among the pioneering batch of grid-tiered solar power installation experts, earning certifications from SEDA, ISPQ and GCPV.

 

solar panel at residential rooftop

Malaysia, Well Positioned to Attract More Solar Investments

Malaysia has progressed significantly in the solar PV industry over the past decade which has, in turn, resulted in the promising growth of new businesses and jobs. In 2016 alone, the country attracted seven solar manufacturing projects and 83 renewable energy projects in the solar industry worth RM1.77 billion and RM0.65 billion respectively.

To reinforce a comprehensive solar ecosystem, the solar PV industry requires adequate support by a strong supply chain. This is where hi-tech and established solar players can play an integral role.

As a leading name in the industry, Solarvest has the knowledge, experience and expertise to take on this challenge confidently.

solar panel at garden

Malaysia Poised to be Leader in Solar Industry

Despite solar PV being a relatively new source of growth in Malaysia, the country has been making strides in the solar industry in recent years. Among others, it is the world’s third largest manufacturer of PV cells and modules, has the largest thin film manufacturing site and is one of the top exporters of solar panels to the United States.

In a bid to continue on this upward trajectory toward transforming Malaysia into a “hub for solar manufacturing and services as well as an efficient energy generator in expanding economic growth, energy scrutiny and sustainable development”, the country is planning to roll out the Malaysian Solar PV Roadmap 2030 at the end of the year.

As a top high-income yielding solar PV system installation brand in the country specialising in large-scale solar farming in the country, Solarvest is dedicated to being at the forefront of the industry to help you get the most of the solar energy.

Panda Green Energy completes first panda-shaped PV power plant

Panda Green Energy Completes First Panda-Shaped PV Power Plant

China-based renewable energy developer and owner Panda Green Energy Group (PGEG), formerly United Photovoltaics said it had completed and grid-connected the first panda-shaped PV power plant in Datong County, Shanxi Province, China.

The 50MW plant also includes a youth activity centre dedicated by United Nations Development Programme (UNDP) to promoting youth participation in sustainable development. PGEG has teamed with UNDP to build panda-shaped PV power plant in China and other parts of the world, notably the ancient network of trade routes by sea and overland from China to Europe, such as the Silk Road.

This first panda-shaped PV power plant is expected to generate electricity equivalent to the reduction of approximately 60,000 tons of carbon dioxide emission each year.

Sadly, actual pictures of the plant (at time of posting) were not available on PGEG’s website, due it being upgraded and amended due to the recent name change.

大同熊猫电站鸟瞰图

Source Via: www.pv-tech.org