How Do Solar Panels Work?

Jan 11, 2024

 

Overview of solar panels.

The popularity of solar energy as a sustainable power source for homes and businesses in New Zealand is rapidly increasing. With growing worries about climate change, solar power is emerging as a practical and convenient solution. This guide explains how solar panels work and why they are a great option for homes and businesses in Aotearoa.

Solar panels may appear almost magical, but their foundation lies firmly in science. These extraordinary devices harness the power of sunlight and transform it into electricity using photovoltaic (PV) cells. Harness the incredible power of sunlight with our simple yet immensely effective process. Our solar panels efficiently capture the sun’s rays and convert them into practical energy, giving your home or business the power to operate entirely on solar energy. Whether you seek to decrease your electricity expenses, diminish your carbon footprint, or contribute to New Zealand’s sustainable energy initiative, solar panels provide an exceptional solution .

How Much Solar Power Do You Really Need?

One of the key questions Kiwis ask when considering solar energy is, “How much solar power do I actually need?”

To determine the appropriate size for your solar system, it’s important to first assess your energy consumption. Start by calculating your average daily electricity usage for your home or business. For most residential needs, a system ranging from 4 to 8 kilowatts (kW) is generally suitable, but if you have a high-energy demand business, you may require a larger system .

The size of your roof plays a vital role in determining the solar energy potential. A larger roof allows for more panels, resulting in increased energy generation. Opting for high-efficiency panels that produce more energy per square meter is a smart choice when you have limited space available.. Additionally, the amount of sunlight your location receives should be taken into account. For instance, if you reside in the sunny city of Nelson, you’ll require fewer panels to generate the same amount of energy compared to a cloudier place like Wellington .

Research has shown that an average household in New Zealand would greatly profit from a 6 kW solar system in order to fulfill its energy needs. Nevertheless, each situation is different, so conducting thorough research or seeking advice from a local solar specialist is essential to determine the best solution for your individual needs .

Is Solar Power Really Worth It? A Look at the Costs and Benefits

The Financial Upside of Solar Panels

Solar energy is often associated with high costs, but the truth is that it’s a long-term investment that can lead to substantial savings. While the initial expense may seem significant, the use of solar panels can dramatically reduce or even eliminate monthly electricity bills.

Solar panels in New Zealand have become increasingly affordable over the past decade, thanks to a significant decrease in costs. This means that more and more Kiwis can now take advantage of this sustainable energy source. Furthermore, the government’s Warmer Kiwi Homes program offers subsidies for home insulation and heating, indirectly encouraging the adoption of solar panels . To further support homeowners in going solar, numerous banks in the country provide special loans and green finance options specifically tailored for the installation of solar systems .

Another important aspect to take into account is the potential increase in the value of your home due to solar panels. Studies indicate that homes equipped with solar panels tend to sell more quickly and at higher prices compared to those without them . This means that in addition to saving on energy expenses, you could also realize a significant return on investment if you choose to sell your property.

The Environmental Impact of Going Solar

Solar energy is not only about money; it also brings remarkable benefits to the environment. New Zealanders are increasingly embracing solar power due to its significant positive impact. By switching to solar energy, you decrease your dependence on fossil fuels, which play a pivotal role in climate change. Additionally, solar panels generate clean and renewable energy, ensuring they produce no harmful greenhouse gases during electricity generation .

Transitioning to solar power is a practical way to decrease your carbon footprint. By encouraging more New Zealanders to make the switch, we have the potential to substantially decrease our country’s carbon emissions, thus assisting New Zealand in achieving its climate targets as outlined in the Paris Agreement and making a positive impact on global emissions reduction .

How Solar Panels Work and Why They’re a Smart Choice

The Science Behind Solar Panels

Although solar panels may appear to be advanced technology, the science behind them is actually quite simple. At the heart of solar panels, you will find numerous photovoltaic (PV) cells, which are essentially small units. These cells, made from semiconductor materials like silicon, possess the remarkable ability to convert sunlight into electric current. This incredible process, known as the photovoltaic effect, takes place when sunlight dislodges electrons within the cells, resulting in the generation of electricity .

Solar panels generate direct current (DC) electricity, but in order to power the majority of your household or business appliances, it must be transformed into alternating current (AC). This crucial conversion is carried out by a key component known as an inverter. Once the electricity has been converted, it can be utilized to supply your property with power, stored in a battery system, or even returned to the grid if you produce more than you consume .

Solar technology has advanced significantly, with cutting-edge panels achieving conversion efficiencies of up to 22%, compared to earlier models that were around 15% efficient .

Why Solar Panels Make Sense for You

 

So, why should you consider installing solar panels in New Zealand? There are plenty of reasons, but here are some of the most compelling:

  • Lower Electricity Bills: This one’s a no-brainer. By generating your own electricity, you can drastically reduce or even eliminate your power bills. And with electricity prices rising in New Zealand, locking in your energy costs with solar is a smart financial move.
  • Energy Independence: Tired of relying on the grid? Solar panels give you more control over your energy supply, especially when paired with a battery system that stores excess energy for use when the sun isn’t shining .
  • Environmental Impact: We’ve touched on this already, but it’s worth repeating. Solar energy is clean, renewable, and sustainable. By switching to solar, you’re doing your part to protect Aotearoa’s unique environment for future generations .
  • Increased Home Value: As mentioned earlier, solar panels can increase the value of your home, making it more attractive to potential buyers. A study even found that homes with solar panels tend to sell faster and at higher prices than those without—talk about a smart investment!

Maximizing Your Solar Energy Generation

Calculating Your Solar Power Potential

The energy output of your solar panels depends on several key factors: panel efficiency, sunlight exposure, and the system’s size. On average, solar panels convert about 15-20% of the sunlight they receive into electricity. While this percentage might seem small, consider the vast amount of sunlight that hits New Zealand each day—it’s a powerful resource!

Your geographic location in New Zealand plays a big role in how much energy your panels can generate. For instance, if you live in a sunny area like Nelson, your energy production will be higher compared to someone living in a cloudier region like Wellington. But don’t worry—solar power can still be highly effective in less sunny areas of New Zealand, especially with high-efficiency panels designed to capture sunlight even on cloudy days. In places like Dunedin, which gets fewer sunshine hours, modern solar technology can still offer substantial energy savings .

Real-World Examples

Consider Auckland, known for its mix of sunny and cloudy days. Despite its variable weather, solar energy remains a compelling option. High-efficiency solar panels, such as those from SunPower, can generate a remarkable amount of electricity even in less-than-ideal conditions. Pairing these panels with microinverters that optimize energy conversion at the panel level can ensure you’re getting the most out of every ray of sunlight .

The Promising Future of Solar Energy

In New Zealand, solar energy is more than just a fleeting fad; it is a strategic financial investment and a significant step towards a sustainable future. By comprehending the operation and advantages of solar panels, you can make a well-informed decision that will positively impact both your financial situation and the environment.

With the continuous advancements in solar technology and the declining costs, now is the perfect time to make the transition to solar power. By opting for solar energy, you are not only investing in your own home or business but also in a cleaner and more sustainable future for all New Zealanders.

Whether your aim is to lower your energy costs, achieve enhanced energy self-sufficiency, or contribute positively to the environment, solar energy is an ingenious concept that warrants serious deliberation.

Contact Vital Solar to install solar panels at your property and start saving on electricity.


Sources:

IRENA – Renewable Energy

EECA – Solar Energy
SEANZ – Solar Power Systems
Warmer Kiwi Homes Program
Ministry for the Environment – Climate Change
University of Otago – Solar Research
REINZ – Sustainable Property
Auckland Council – Climate Action

Our guarantee

With extensive experience and certification by New Zealand Master Electricians, we are the trusted solar energy systems provider for Kiwi homes and businesses. With the highest level of compliance available in solar installation, we only work with products covered by a manufacturer’s warranty and we guarantee all our workmanship.

Our commitment

Vital Solar is a proud member of SEANZ, the Sustainable Energy Association of New Zealand.

SEANZ is an independent organisation that works hard to drive our sustainable energy future, leading the promotion, support and innovation of solar PV and energy storage technologies.

Because we’re members of SEANZ, we work to a strict SEANZ Code of Conduct. It also means you can apply for financing from your bank for solar energy systems from Vital Solar.

Find out more about switching to solar

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