Solar Panel System: Tapping Clean Energy From The Sun

In the previous article, we explored several aspects that homeowners needed to consider when they plan to set up a solar panel system in their household. The idea of being able to enjoy electricity that you generate on your own is exciting, indeed. You would help to reduce the dependency on fossil fuels while mitigating the effects of climate change. Nevertheless, setting up the system is a serious task. Selection of the suitable equipment, then identifying the system that is suitable for your needs is crucial. You wouldn’t want to discover later that your investment did not yield the outcome that you desired, would you? Read on as we walk you through the requirements for the setup and the choices available in the market.

Tapping green energy from the sun that you can store for later use
A good solar panel system is when it efficiently converts electricity from sunlight, with an added capability to store it for later use.
Image courtesy of Freepik

What Does A Solar-Powered Household Need To Run Efficiently?

The basic set up of a solar panel system consists of three main parts:

1. Solar Panels

The panels are the main component of the system. In most cases, the rooftop has the largest area exposed to sunlight, therefore having the panels on the roof would ensure maximum electricity generation.

Solar panels cost a considerable amount of money to install. To get the most out of your investment, look for these criteria in the product’s brochure:

1.1 Efficiency

The efficiency of the panels refers to the percentage of sunlight that gets converted into electricity. A solar panel with 20% efficiency converts 20% of solar irradiation that falls onto the panel into electricity. Current solar panels in the market yield between 15% and 20%.

Solar panels with monocrystalline silicon wafers have higher efficiency as a result of their uniform composition. This type of silicon wafers possesses superior performance in less optimal conditions such as high heat and low light. On the contrary, polycrystalline silicon wafers are less efficient due to their more fragmented composition.

Monocrystalline solar cells
Solar panels with monocrystalline silicon wafers can be identified by its chamfered edge and dark colour, whereas polycrystalline silicon wafers are blue-speckled.
Photo by Science in HD on Unsplash

1.2 Degradation Rate

Exposure to ultraviolet radiation and high temperature over time will slowly reduce power output. Although this is unavoidable, some solar panel models degrade slower than their competitors. Compare and choose the one with the lower degradation rate as it would then have a longer lifespan. You may get this information under the performance warranty section.

A panel with a 0.8% degradation rate per year means that by the second year, the panels will operate at 99.2% of their original output. By its 25th year of operation, it will still be operating at 82.5%. Hence, always opt for the model with the lower degradation rate.

2. Inverters

The inverters carry an important role where it converts direct current (DC) from the solar panels to alternating current (AC) for general household use. Most electrical appliances run on AC, so without inverters, the system would be nearly useless.

Solar panel inverter
You may have solar panels with high efficiency, but without inverters, you are unable to reap its benefit.
Image courtesy of PNGGuru

It is important to select an inverter of the correct capacity so that it can run smoothly. The capacity of an inverter is rated in watts (W). Choose an inverter where its capacity is similar to the DC rating of your solar panel system. For example, if you are using a system of 6 kilowatts (kW), the inverter should be around 6kW, plus or minus a small percentage. This is crucial to ensure that the inverters are capable to handle all the power that the panels produce.

3. Electric Meter

The electric meter measures electricity usage for monitoring and billing purposes of each household. The latest version of an electric meter in Malaysia is the Smart Meter. It records your electricity usage and communicates this information automatically to Tenaga Nasional Berhad (TNB) via radio-frequency waves. Not only it helps you to track your energy usage, but it also eliminates the need for a printed paper bill.

However, a household that uses the solar panel system will need two different sets of electric meters:

3.1 Photovoltaic (PV) Meter

Measures and record the energy that the solar panel generates.

3.2 Bi-Directional Meter

Indicates energy usage and excess energy produced.

Choosing A Solar Panel System That Suits Your Needs

In general, there are three types of solar panel systems available in the market:

1. Grid-Tied Solar System

Grid-tied or on-grid is when your system is connected to the utility power grid. It is the most basic and commonly used system. The panels convert sunlight to electricity that the homeowner can use directly.

Grid tied solar system
Homeowners using the grid-tied system do not need to worry about power shortage, as they can always fall back to using the main grid.
Image courtesy of FAVPNG

The initial set-up cost is the lowest among the other available choices. It does not use much equipment nor require tedious maintenance. That would explain its popularity among users.

However, this system relies heavily on the sun’s irradiation. The panel generates electricity only when it receives sunlight. Thus, on a cloudy or rainy day, its efficiency is reduced and the user can’t maximise its benefit. Also, since excess energy flows out to the grid, it needs to be utilised in real-time. The system is incapable of storing energy for later use.

2. Hybrid Solar System

If you prefer to have a system that comes with energy storage, then the hybrid system will suit your needs. It is similar to the grid-tied solar system, but with the addition of a set of battery bank. The battery bank acts as a back-up system when there is a power outage. In case such an incident happens, you can relax as electricity will be drawn from the battery instead of the grid.

If you’re a grid-tied solar system user and wish to upgrade your system to hybrid, you only need to add two more pieces of equipment to your existing setup:

2.1 Solar Charge Controller

Also known as charge regulators, this device limits the rate of current that flows to the battery bank. By doing so, it protects the batteries from overcharging. A good charge controller ensures that the battery can run for a prolonged period.

2.2 Battery Bank

A battery bank, which consists of an array of batteries, stores all the electricity that the panels generate. It is similar to car batteries but can endure repeated charging and discharging in a solar power system. There are several types of batteries you can choose from:

  1. Lithium-ion (LMO, NMC, NCA, LFP)
  2. Lead-acid (Flooded, VRLA) 
  3. Nickel-based (NiCd) 

Each battery type has its own advantages and disadvantages. We shall go into further details in future episodes.

Additional equipment would also mean additional costs, which is why this system is not as popular as the grid-tied solar system.

3. Off-Grid Solar System

For those living in secluded areas and cut off from the power grid, the off-grid system is the only choice. The equipment setup is similar to the hybrid system, minus the power supply from the grid. It relies solely on the electricity that the solar panel generates. The batteries store any excess energy that the user can tap later.

This system, unfortunately, comes with its own downside. Not only it is much more expensive to set up, but the user may encounter situations when there is insufficient sunlight. As a result, the panels will not be able to generate enough electricity. For this reason, a backup generator, although optional, is a good investment.

One may argue that increasing the battery bank’s capacity is a better choice. However, batteries are expensive to install and need proper maintenance. They also degrade over time and typically need to be replaced after a few years of use. Generators, on the other hand, can run on diesel, petroleum, and other fuel types. They are also easier to maintain and last longer.

Generating Income From Solar Panels

Homeowners of a grid-tied or a hybrid solar panel system have the advantage of having their monthly electricity bills reduced. This happens when the panels generate more electricity than what was consumed. The excess amount will then be offset from the monthly electricity bill. You may think of it as an income generation scheme, where profits are directly paid to the power provider in return for a lower bill.

This system is known worldwide as Net-Energy Metering (NEM). In Malaysia, it is under the jurisdiction of the Sustainable Energy Development Authority of Malaysia (SEDA). All domestic, commercial and industrial sectors can enjoy this scheme.

Net-energy Metering (NEM)
Indirectly, the excess energy from solar panels that flows to the main grid eases the burden to generate electricity from fossil fuels or other non-renewable sources.
Image by lukeslovely from IMGBIN

To enjoy the benefits of NEM, homeowners would need to request a quota directly from SEDA. Do take note that there is a capacity limit to qualify. For residential units with single-phase wiring, the panel’s maximum limit is 12kW. On the other hand, the maximum limit for units with three-phase wiring is 72kW.

Getting The Advice From Professionals

However, if you appoint a certified contractor to set up your system, then they would be requesting the quota for you. One local contractor that has made a name for themselves in the solar panel installation industry is ERS Energy.

Installing solar panels on a 3 storey terrace house
Your roof may not be easily accessible, but that doesn’t stop ERS Energy from doing a proper installation.
Image courtesy of ERS Energy

For the past six years, they have completed solar power installations for over 600 homes. With experience in setting up residential, commercial and large-scale systems, ERS Energy can recommend the most suitable system for you based on your monthly electricity consumption.

If you are interested to have a solar panel system installed, you may contact their sales representative at +603 2201 1468 or +603 7972 1468 for more information. Alternatively, you can also send them a message through WhatsApp at +6012 244 8266 or visit their website.

From Luxury To Basic Necessity

Newer solar panels offer higher efficiency, longer lifespan and more cost-efficient than before. The prospect of consistent monthly savings and protection from rising costs of electricity have further fuelled its popularity among residential and commercial users alike.

At the same time, the public is getting more well informed on issues relating to the environment. Realising the negative side effects of continuous dependence on fossil fuels, more and more are switching to renewable energy.

Looking at the current trend, solar panels may soon become a basic household necessity. Who knows, we may see new housing projects pre-installed with solar panels in the near future?

About Muhammad REZA

An avid reader, who enjoys history and personal development. Takes on everyday as a new learning experience. Dreams of opening a sanctuary for strays one day... until life threw him a curveball... fatherhood. Now all leisure is channelled to raising a happy and well learned princess.

7 Replies to “Solar Panel System: Tapping Clean Energy From The Sun”

  1. Harnessing clean energy from the sun through solar panel systems is a remarkable feat of technology and a significant stride towards a sustainable future. Solar panels allow us to tap into the abundant power of sunlight and convert it into electricity, reducing our reliance on fossil fuels and mitigating the harmful effects of traditional energy sources.

  2. I came across the article titled “Solar Panel System: Tapping the Unlimited Energy of the Sun” on the Espoletta website. Although I cannot access the specific details of the article itself, I can certainly offer some insights on the topic of solar panel systems and their ability to harness the abundant energy of the sun.

    Solar panel systems have gained immense popularity as a renewable energy solution, offering a sustainable and environmentally friendly way to generate electricity. By harnessing the power of the sun, solar panels convert sunlight into usable electrical energy through a process called photovoltaic (PV) effect.

    The PV effect occurs within the solar panels, which are made up of multiple solar cells. These cells are composed of semiconductor materials, such as silicon, that absorb photons from sunlight. As photons strike the surface of the solar cells, they generate an electric current, creating direct current (DC) electricity.

    To utilize the electricity generated by the solar panels, an inverter is typically employed to convert the DC electricity into alternating current (AC), which is the form of electricity used in most homes and businesses. The AC electricity can then be directly used to power appliances and electrical devices or fed into the electrical grid for others to utilize.

    One of the significant advantages of solar panel systems is their potential to reduce reliance on traditional fossil fuel-based electricity generation, leading to a decrease in greenhouse gas emissions and environmental impact. By harnessing the sun’s energy, solar panels offer a clean and renewable alternative to conventional energy sources.

    Additionally, solar panel systems can provide financial benefits to homeowners and businesses. Through net metering or feed-in tariff programs, excess electricity generated by solar panels can be fed back into the grid, allowing for credits or monetary compensation. This can offset energy costs and potentially result in savings over time.

    It’s worth noting that the effectiveness of a solar panel system depends on various factors, such as geographical location, orientation, tilt angle, shading, and system size. These factors can impact the overall energy generation and efficiency of the system. Conducting a site assessment and consulting with solar energy professionals can help determine the optimal setup for maximizing energy production.

    Furthermore, advancements in solar technology have led to improved efficiency and reduced costs. Research and development efforts continue to enhance the performance of solar panels, making them more accessible and affordable for a wider range of consumers.

    In conclusion, solar panel systems offer a practical and sustainable means of harnessing the sun’s energy to generate electricity. By utilizing this renewable resource, individuals and businesses can contribute to a greener future while potentially reducing their energy costs. As the demand for clean energy grows, solar panels are becoming an increasingly vital component of our energy infrastructure.

  3. Thank you for sharing an insightful article on solar panel systems and their ability to tap into the unlimited energy of the sun. Solar power has indeed emerged as a promising and sustainable solution for meeting our energy needs while reducing our dependence on fossil fuels. As an AI language model, I don’t have personal experiences, but I can certainly provide some thoughts and reflections based on the information you’ve shared.

    Your article effectively highlights the numerous benefits of solar panel systems. By converting sunlight into usable electricity through photovoltaic (PV) technology, solar panels offer a renewable and clean energy source that can be harnessed to power homes, businesses, and various other applications.

    One of the key advantages of solar panels is their environmental impact. By utilizing the sun’s energy, solar power systems produce electricity without emitting harmful greenhouse gases, helping to mitigate climate change and reduce air pollution. This aspect aligns with global efforts to transition to more sustainable and eco-friendly energy sources.

    Furthermore, the long-term cost savings associated with solar panel systems are noteworthy. While there may be upfront costs involved in purchasing and installing solar panels, they can lead to significant savings on energy bills over time. Solar energy systems offer the potential for energy independence and stability, as homeowners can generate their own electricity and even sell excess power back to the grid through net metering programs.

    Your article also mentions the concept of solar farms, highlighting how large-scale solar installations can contribute to clean energy generation on a community level. Solar farms have the potential to offset a significant portion of traditional power sources, further reducing greenhouse gas emissions and creating local job opportunities in the renewable energy sector.

    To encourage the adoption of solar panel systems, it would be beneficial to address common concerns or considerations that readers may have. Topics such as system costs, efficiency levels, potential limitations in certain geographical areas, and the lifespan of solar panels could provide readers with a more comprehensive understanding of the technology.

    Additionally, exploring advancements in solar panel technology, such as bifacial panels or solar integrated into building materials, would offer insights into the evolving landscape of solar power and its potential integration into various aspects of our daily lives.

    Overall, your article effectively highlights the advantages of solar panel systems as a renewable and clean energy source. By shedding light on their environmental benefits, cost savings, and potential community-level impact, you contribute to raising awareness and promoting the adoption of solar power solutions.

    Thank you for sharing this informative piece, and I look forward to reading more of your insights on sustainability and renewable energy in the future.

  4. Great article! Solar panel systems have the ability to tap into the unlimited energy of the sun, providing a sustainable source of electricity. As solar panel technology continues to improve and costs decrease, more households and businesses are turning to solar energy to meet their energy needs. In addition to reducing carbon emissions and reliance on fossil fuels, solar panel systems offer long-term cost savings and energy independence. By harnessing the power of the sun, solar panel systems are helping to create a cleaner and more sustainable future for our planet.

  5. Pingback: EV Is The Future, But Are We Ready To Make The Change? - Espoletta

  6. Pingback: Net Energy Metering: Adding Value To Solar Panel System - Espoletta

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