My old friend John Grainger informs me that over 20 percent of all Adelaide solar installations now have integrated solar battery storage units installed and that this trand is continuing.
Why Is Solar Battery Storage Becoming ‘Mainstream’?
Ever since the summer of 2107 electricity blackouts occurred, solar system owners have been looking to become grid independent – that is, they realise that by incorporating solar battery storage into their renewable energy systems, that they can generate and store all the electrical needs they have, provided their solar system is large enough.
Average Australian Families Power Consumption?
The average Adelaide homeowner uses around 29 Kwh of electrical energy per day. This is expected to increase to over 40 Kwh per day by 2020, as an ever increasing range of electrical ‘gizmos’ and ‘connected devices’ come online.
A ‘typical’ 5Kwatt solar system will produce around 20 Kwh of electrical energy today, and a 10 Kwatt system 40 Kwh of electrical energy – meaning that energy ‘self sufficiency’ is now within the reach of all home owners.
Solar Intermittency And Solar Battery Units
To become totally energy independent means being able to run your homes’ electrical requirements from stored solar energy – that is, to use specifically designed ‘ solar battery’ storage units to store a proportion of solar energy produced by a solar system in the day time, and make it available for usage in the night time – when obviously the solar panels no longer produce electrical power. In the daytime a home can be powered (again, depending on the size of the solar system) by the solar panels and at night the solar battery storage system switches in to power the home – nice solution to inevitable power outages in South Australia.
Cost Of Solar Storage – Prohibitive?
The current cost of installing large scale solar battery systems (around the 20 Kwh level, as discussed above), is around $2000 / Kwh – so our example 20 Kwh battery system could easily cost around $20,000. The economics do not currently stack up – however, if reliable power supply is the major criterion, then by all means consider it. As this Choice article suggest, the pricing of solar battery storage could be expected to drop to $500 / Kwh by 2020, making it very viable.
John Graingers’ Adelaide Solar Blog – http://solarenergyinformation.com.au/
Panasonic Solar Battery Storage – http://www.panasonic.com/au/consumer/energy-solutions/residential-storage-battery-system.html
Telsa Solar Batteries – https://www.tesla.com/en_AU/powerwall