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NSW battery rebate now available. Find out if you're eligible.
Request a QuotePeak Sun Hours Are Essential for Solar Planning: Understanding peak sun hours for your location is the first step in estimating how much solar energy your system can generate. This varies by region and time of year, so it's crucial to know how much sunlight your home gets each day.
Different Locations Have Different Sunlight Levels: The average number of peak sun hours varies across Australia. For example, Queensland experiences more peak sun hours than Melbourne, which directly impacts the efficiency of solar power generation in different regions.
Expert Consultation Ensures an Accurate Estimate: To get a precise estimate of how much solar energy your home can generate, it's beneficial to consult with a professional solar provider. They can assess your roof’s angle, shading, and other factors that may influence your system’s performance.
Other Helpful Articles:
Peak sun hours refer to the time during the day when sunlight is strong enough for solar panels to produce energy efficiently. It measures the intensity of sunlight, which is crucial for determining solar panel performance. Across Australia, peak sun hours vary significantly depending on location and season.
Here’s an overview of average peak sun hours by location:
New South Wales: Homeowners in NSW enjoy an average of around 5.5 peak sun hours per day during summer. In winter, peak sun hours may drop slightly but still allow for effective solar power generation.
Melbourne: Melbourne averages about 4.5 peak sun hours daily. Although slightly lower than New South Wales, this is still a strong sunlight level, especially in spring and summer.
Queensland: Known for its sunny climate, Queensland has the highest peak sun hours. It averages around 6 hours per day in summer and 5 hours in winter. The abundant sunlight in the region makes Queensland one of the best regions for solar power generation.
South Australia: South Australia experiences about 5.5 peak sun hours daily in summer and around 4.5 hours in winter. It is slightly lower than Queensland but still a favourable environment for solar power. Many homeowners in South Australia find solar systems beneficial in offsetting energy costs throughout the year.
Solar panels don't require direct sunlight all day to generate electricity. They can still produce energy on cloudy or overcast days, although at a reduced capacity. However, to be worthwhile, most solar systems need around 4 to 6 hours of direct sunlight daily. This range is generally sufficient for residential solar panels to generate the energy required to meet household demands.
The amount of sunlight needed can vary depending on several factors. These include the type of solar panels installed, their efficiency ratings, and your location. For example, high-efficiency panels like Trina and 1KOMMA5° can produce more energy in less sunlight than standard panels.
In essence, while solar panels can operate with varying amounts of sunlight, aiming for 4 to 6 hours of good sunlight daily is ideal for ensuring that your system operates efficiently and effectively meets your energy needs.
The standard calculation of your potential solar output is pretty straightforward. More peak sun hours generally mean higher energy production. For maximum output, you can use this formula:
Potential Solar Output (kWh)=Solar System Size (kW)×Peak Sun Hours
A typical Australian household consumes about 20–25 kWh/day, so a 30 kWh/day system not only meets this but provides additional energy to store or sell back to the grid.
Let's say you are from Queensland and planning to install a solar panel system. Queensland enjoys a maximum of 6 peak sun hours daily. If you are planning to install a 6kW solar panel system, we can calculate the system's output:
Potential Output = 6kW x 5 Hours = 30kW per day
Now that we’ve got the basics down, you may be wondering how real-world factors like shading, weather, and panel orientation come into play. Shading on your panels, the angle of your panels, and even the occasional overcast day can reduce the energy your solar generates. Add to that seasonal changes, such as shorter daylight hours in winter, and your solar energy output will fluctuate.
This is where the performance ratio (PR) comes in. Think of the PR as a safety net for these factors. It’s a number between 0.75 and 0.85 that accounts for the inevitable losses and inefficiencies in your system.
For example, if your system has a high-quality installation, and you live in an area with minimal shading and good sun exposure, your performance ratio might be closer to 0.85. On the other hand, if you’re dealing with some shading or a less-than-ideal installation, it could be closer to 0.75.
Let’s put that into practice. Using our earlier example, let’s assume your system has a 0.80 PR. That means your adjusted potential output would look like this:
Adjusted Potential Output = Solar System Size (kW) × Peak Sun Hours × Performance Ratio
So,
Adjusted Potential Output = 6 kW × 5 Hours × 0.80 = 24 kWh per day
In other words, while your system might theoretically produce 30 kWh per day, the real-world performance (after accounting for those little inefficiencies) will be around 24 kWh daily. That’s still a solid amount of energy to help power your home
Online tools are available to get a general idea about the number of peak sun hours in your area. These numbers can change based on where you live and other local conditions. Alternatively, you can reach out to your local solar providers for assistance. They can help you discover if switching to solar power is worth the cost.
One of the most important factors in determining whether solar panels are a good fit for your home is understanding how much sunlight your roof gets throughout the year.
Our energy specialists at 1KOMMA5° can perform a detailed analysis of your property and consider factors like the direction your roof faces, the slope, and any obstructions that might block sunlight. With this information, we can provide you with a personalised recommendation on whether solar panels will meet your energy needs
Head over to the 1KOMMA5° blog for more helpful tips and other important guides on everything solar, from inverters, panels and batteries to how to make the most of your investment for years to come.
Get all the right information before installing a solar power system for your home in NSW.
Learn about how you can reduce your power bills, government rebates, how to select the right system for you and of course how to get the most out of your solar.
There are great government rebates/incentives still in place for eligible households. Basically, the larger the panel array, the more STCs your solar system generates as it is based on the expected output of the system over time.
When you buy a solar system, the purchase price is normally reduced by the value of the STCs created by your system. You simply fill out a form on the day of installation to confirm that the system has been installed, and that’s it. There is no additional paperwork that you need to do.
Small-scale Technology Certificates (STC’s) – previously known as Renewable Energy Certificates or RECS – are created when a Renewable Energy System such as a Solar PV system is installed.
The number of STC’s depends on the predicted amount of energy generated and hence the larger the system the greater the rebate. In essence, one STC is created for every megawatt-hour of production capacity of the system.
This is further multiplied by the number of years the system is likely to generate energy (for home solar systems, this is usually 15 years, although the life of the solar panels themselves is considerably more than that).
This incentive program is being phased out until 2030, so each year the number of certificates your system is eligible for reduces.
The system for trading and pricing STCs for small systems is managed by the Small-scale Renewable Energy Scheme (SRES).
STCs are bought by Liable Parties (usually electricity retailers) and must be surrendered at the end of each quarter. As the number of STCs that are required to be surrendered is a fixed amount each year, but the number of STCs created is variable, the price paid for STCs also varies and is determined by supply and demand.
The Federal Government legislated in 2010 a fixed price for STCs by implementing a Clearing House system where STCs can be bought and sold for $40. However, there is no requirement for Liable Parties to purchase from the Clearing House, so they are likely to only do so if there is a shortage of STCs or the market price exceeds $40. There is currently a surplus of STCs in the market which means the market price of STC’s below $40
The Feed In Tariff is only something you need to worry about if you don’t have battery storage.
The price your chosen energy retailer pays for any excess electricity generated from your solar panels is recorded as a credit on your power bill.
In NSW, solar power is fed into your home as it is generated and your household will use it first before you draw power from the grid.
This means that for every kWh of solar power used in the home you are directly saving money you’d spend on your power bill. This reduction in your power bill is the main financial benefit of solar power.
Everything else will be bought up at an agreed rate by your electricity retailer.
At the moment, most feed-in tariffs are between 5 and 10 cents per kWh, with many being about 7 cents. They bounce up and down a lot, for example in previous years they have been up over 20 cents per kWh. Typically, they are always at least 5 cents per kWh.
Once you sign up for a 1KOMMA5° Installation, we immediately submit your grid application to the relevant energy distributor. For systems up to 5kWs, this is a formality. For larger systems it can take a few days or more. Once we receive approval, your installation will be managed by our installation coordinator, who will welcome you to 1KOMMA5° and book an installation date for you. This is generally booked within around two weeks and installation dates are available Monday to Friday, weather permitting.
We endeavour to have your system installed within 2-4 weeks unless you request us to hold for whatever reason. Due to our strict safety policy, we do not install solar systems when it rains. In the event of inclement weather, we will rebook your installation as soon as possible. We always work with your requests as we strongly recommend that someone be home on the day of installation.
Green Loans can be an affordable way to pay for your solar power system and is only available for approved products. As a Clean Energy Council Accredited installer, all our systems qualify.
Green Loans can be used to finance 1KOMMA5° systems from $1,000 to $30,000 over a 2-7 year term. Once you have received a referral from 1KOMMA5°, online approval usually occurs within 1-2 business days. Green Loans have a competitive fixed interest rate that is as low as 7.99% p.a.* | Comparison rate 9.21% p.a.^ Establishment fee of $299 added to the loan amount. $2.70 per week account keeping fee included in repayments.
To be eligible to apply you must:
Be over 18 years old and an Australian resident or citizen
Own or be purchasing a home
Be employed, self-employed, a self-funded retiree; or is receiving the Government Age Pension
Have an Australian driver’s license or Passport
Provide two most recent payslips or 90 days of bank statements
There are a number of good, competitive Green Loan providers – ask us about the options available.