How much does it cost to install a 10kW solar system in your Melbourne home or business? What type of system should you be buying? And how much money can you expect to save on your power bills?
Solaray has over 10 years’ experience in the solar industry, so we’ve got these questions covered, plus some extra insights to share.
The Price of a 10kW Solar System In Melbourne Victoria
A 10kW solar system in Melbourne is going to fit best an energy-hungry household or a business that uses at least around 35-40kWh during the daytime. It’s a large system with the capacity to save you a lot of money over 25 years so it’s important to get a quality system, ensuring reliability, performance, and longevity.
The 10kW solar systems in Melbourne that are worth their salt start at under $10,000, and go up from there depending on how high up the quality scale you want to go. This price includes the rebate from the federal government’s Small-Scale Renewable Energy Scheme (SRES), which brings down the cost of renewable energy products like solar. Lucky residents of Melbourne can also apply for a second rebate as part of the Victorian government’s Solar Homes program. The first phase of the scheme is funded, from August 2018 to June 2019, and lets you claim up to $2,225 back if you’re eligible.
The two rebates combined take the starting price of your 10kW system down to under $10,000.
If you’re like many of us and don’t have $10,000 sitting around, there are good financing options available to help you get on the solar train before it’s too late to catch both rebates. Solaray partners with RateSetter, a provider of Green Loans. Green Loans are low interest, and people often find that the savings to their power bill offset their repayments, even with the interest.
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How much can a 10kW solar system save you?
A 10kW solar system in Melbourne on an unshaded north-facing roof will output approximately 36kWh a day according to the Clean Energy Council Guideline. It will output more in summer compared to winter, and from our experience installing quality products makes a significant difference.
For a Melbourne household with a $1,800 quarterly power bill, using 70% of the solar power generated by a 10kW system can save up to $970 every quarter.
There are also feed-in tariffs available from your energy retailer for excess solar power that is sent back into the grid. Since July 2018 the Victorian minimum single-rate tariff is 9.9 cents per kWh, while the time-varying rate offers between 7.1c and 29c per kWh for off-peak to peak hours. Every electricity retailer with over 5,000 customers must offer one of these packages, and yours may offer other deals too.
Over the life of the system, your 10kW system can earn you up to $115,000 in total savings.
What are the best solar products to buy?
A solar PV system has to be mounted on your roof, exposed to the Melbourne weather through rain, hail, burning Aussie sunshine and furious winds—all while performing perfectly for 100,000 hours over its 25-year lifespan to give you this fantastic return on your investment. Quality products and a trustworthy installer and the key to making all of this work.
Solar Panels For a 10kW Solar System
A good quality 10kW system starting around $10,000 to $12,000 would include a European-made inverter like the Fronius Symo, premium panels such as Trina Honey, and a straightforward installation (no cherry pickers etc.). It’s important to note that when it comes to solar panels, you generally get what you pay for. Most of our customers are choosing to install top of the range panels like the monocrystalline panels from LG Solar, to ensure optimal savings over the life of their systems.
When you’re looking at a larger system, roof space is also a consideration. Choosing high-efficiency panels means we could install 30 x 330W panels, rather than the standard 38 x 270W.
Solar Inverter For a 10kW Solar System
Your choice of inverter makes a huge difference for your system. The two options to consider are string inverters (the old technology) and micro inverters (the newer tech). A string inverter system is like fairy lights, strung together in sequence. The biggest limitation with this type of system is that your panels all perform at the level of the lowest-performing panel. Shade, bird droppings, dust, chimneys and power lines can all affect the output of your panels.
Good solar panels also have a positive power tolerance, meaning some perform above the number of watts they’re labelled. LG 335W panels, for example, can perform at between 335W and 345W. With a string inverter, you’re not able to take advantage of any extra performance from individual panels.
Using microinverters costs a little more up front but pays off as you get the best performance from each panel. It also gives you greater flexibility in how your panels are set up. By using micro inverters, we can design a panel array that spans different orientations and angles across different areas of your roof to catch the sun at different times of day. This helps you use a higher percentage of solar power as you generate it by avoiding a big peak of solar power in the middle of the day.
Adding Battery Storage to Your 10kW Solar System
With a 10kW system, you might be considering battery storage to conserve the energy you can’t use up during daylight hours. With a good quality solar system and battery storage combined, it’s possible to run your household or business almost entirely on solar power.
For a 10kW solar system, you’ll need to consider one of the larger households batteries such as the Tesla Powerwall 2. The Tesla Powerwall 2 gives you 13.5kWh of storage capacity, and an online monitoring system you can use on your smartphone. This sleek, futuristic battery makes a fantastic addition to a 10kW solar system, featuring a backup functionality to help you run certain things in the home when the grid goes down such as the modem, lights, the fridge/freezer etc.
For more information about this and how to accurately size up a battery ready solar system for your Melbourne property, please request a quote today: