15kw solar system

15kW Solar System Price, Output & Returns

Installing a 15-kilowatt (kW) solar energy system in your home can be a magnificent way to reduce your monthly cost of electricity bills. There are several things you need to keep in mind when investing in solar energy to maximize your long-term savings. Different offers for 15 kW solar system Compare prices with other solar installers in your area. So that you can get a good idea about the solar panels, solar inverters, batteries and their prices of your choice. The “Solar world power” gives you a guide on 15 kW solar panel systems, learn more about the cost of a 15 kW solar system in your location, the quantity of electricity you can expect your system to produce, and the smartest method to calculate your payback period. 

15KW SOLAR SYSTEM PRICE RANGE

As you begin your search for a solar energy system for your home, these figures can help you have a better idea of what to expect. However, the cost of your solar energy system is influenced by a variety of factors. Your system will cost extra if you want to install high-efficiency equipment or if you require special accommodations for a difficult roof. Simply ask for an explanation if you receive a price from a solar farm that is much more or lower than the range for a 15 kW solar system in your state. A reputable solar installer will gladly go over their plan with you in detail. The average cost of solar in the Australia is $1.02 AUD per watt ($15,300 for a 15 kilowatt system) as of January 2022. After the federal Gov. rebate.

15KW SYSTEM OUTPUT IN MAJOR CITIES:

The output of any solar system depends on the amount of sunlight the panels receive. And one of the conditions for receiving sunlight is the degree to which the panels are mounted. We arranged the table below using sunlight data from the weather bureau and assuming the solar panels were mounted at a 30-degree angle to the north.

City

Daily Production

Yearly Production

Sydney

54kWh

19,710 kWh

Melbourne

52kWh

18,341 kWh

Brisbane

61kWh

21,900 kWh

Adelaide

59kWh

21,079 kWh

Hobart

50kWh

16,973 kWh

Perth

64kWh

22,995 kWh

Darwin               

66 kWh

24,090 kWh

Canberra               

58 kWh

21,079 kWh

HOW MANY PANELS AND ROOF SPACE REQURIED FOR 15KW SYSTEM:

Depending on the panel’s wattage, a modern 15kW solar system will have between 37 and 45 panels and require 75 to 90 m2 of roof area (which are typically between 330-400W each). Solar panels for homes typically measure 1.7 meters by 1 meters. This means that unless it is ground-mounted, a 15kW solar system won’t be a possibility for the majority of households.

Roof area and number of panels for 15kW solar panel systems:

Solar panel watt capacity

450W

550W

Number of panels, approx

34

28

Required roof area, approx

74m2

71.40m2

PAYBACK PERIOD & IRR FOR 15KW SOLAR SYSTEMS:

The table below compares the payback periods and internal rate of return (IRR) for installing a 15kW solar system in a city with self-consumption rates of 30% and 70%. We assume that anyone who installs a system in the 15kW range has done their research and made sure that a greater percentage of their solar energy will go directly to their local energy demand, even though these rates are high for the majority of typical households with solar (typically more like 20-40 percent) (as opposed to into the grid). The returns will appear even more advantageous if you can reach even larger rates of self-consumption.

Please be aware that we have presumptively determined that the system is eligible for a solar feed-in tariff, which is set by the electricity retailer and the network regulations.

15kW systm CostElectricity PriceFeed in RateSelf Consumption RateIRRAnnual SavingsPayback Period

$10,000

25c

7c

30%

24%

$2400

4years
70%38%$38002.6years

15KW SOLAR SYSTEM WITH BATTERY STORAGE

The new invention of AC Coupling, Battery Storage Systems can now be fitted in all currently operating PV Systems. As it connects directly to the main power supply, you can hook a battery up to any property. You could enjoy the power of the Sun day and night if you chose to add our Tesla Powerwall 2 Battery Storage Option to the 15kW Solar system bundle. However, keep in mind that battery backup choices tend to be quite pricey and can greatly lengthen your back period. As a result, before you take the plunge, talk to us; we’ll be pleased to let you know if this is the best course of action for you.