A Solar Power plus Battery Upgrade Fails to Offset the Cost to Heat and Cool your Whole Home
Free Whole of Home Air Conditioning
Free Total Comfort and Healthier Living
Save up to $57,590
Is a Solar Power plus Battery the Solution to the High Cost of Refrigerated Air Conditioning?
With the Feed-In Tarif a very Low 2.2 Cents per Kwh the Credit you receive from a 10 Kw Solar Power install will vary between $60 and $80 per annum. To effectively utilize the Power Generated by the Solar Array, a Storage Battery appears to be the solution.
The Life Expectancy of current Batteries used in Domestic Installations is on average 11 Years. Allowances should be made to Offset the Savings with a Replacement Battery at a price of around $24,000 or $1,480 during the First Year ( 24,000 over 11 years at Tarif Increases at 7.5% per annum )
Assuming that the 10 Kw Solar Array will Split at 90 Degrees, Roof Pitch at 23 Degrees and Aspect Not all Facing North, we use 75% as the Average Available Generated Power. i.e.. 10 Kw x 4.4 Kwh per Kw x 75% - 33 Kwh available each Day on Average
Daytime Use of Electricity at 26% for a home with Refrigerated Air Conditioning
We also assume that a 3 Star Home would expect an Electricity Bill of say
$5,175 made up of
Refrigerated Cooling
$1,875
Refrigerated Heating
$1,250
Other Appliances etc
$2,050
$5,175
From the above, the anticipated Saving in Electricity with the installation of a 10 Kw Solar Power plus 20 Kwh Battery will be $3,120 less the Replacement Battery allowance of $1,480.
Net Saving $1,655. Over the anticipated life of the battery with Tarif increases at 7.5% per annum, the Overall Savings will be $26,820
From the above it can be assumed that the overall Savings will be around 32%. The Refrigerated Air Conditioning Share of the Total Bill is 19% for a 3 Star Whole of Home Use to compare with Whole of Home Dual Cycle Air Use
It can be seen that the addition of a 10 Kw Solar Power plus 20 Kwh Battery DOES NOT offset the Additional Cost of using a Refrigerated Ducted system
By Comparison - a
Dual Cycle Refrigeration plus
Renewable Energy system can reduce the Electricity Cost by
$2,825.
Dual Cycle Cool
$143
Dual Cycle Heat
$157
Other Appliances etc
$2,050
$2,350
3.8 Kw Solar for ZERO COST
$735
$1,615
Net Saving $3,560. Over the anticipated life of the battery with Tarif increases at 7.5% per annum, The Overall Savings will be $57,590
With Dual Cycle Air there is NO BATTERY to be Replaced after 11 years