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Off Grid Batteries
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This is an area where there is the greatest amount of misinformation and ignorance on the solar scene. So, in the simplest terms possible let’s give you the case for and against batteries.
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FOR
1. Your surplus electricity is stored rather than go back into the grid. This can be used to power lighting and efficient wattage appliances during the evening. The greater the surplus the stronger the case for batteries. If you have single phase power and have installed a 10kW solar system then only 5kWh will be allowed back into the grid so the remaining 5kWh is being wasted unless you have battery storage to capture it.
2. With the inbuilt UPS batteries will power your home during a nighttime blackout.
3. In areas where the quality of the grid is poor batteries can provide the residual voltage to maintain the performance of appliances and machinery especially those working with sensitive electronics.
4. They provide an extra layer of future proofing for electricity pricing.
5. You can potentially reduce your power bill to zero.
6. If you are off grid you have little option other than a generator.
2. With the inbuilt UPS batteries will power your home during a nighttime blackout.
3. In areas where the quality of the grid is poor batteries can provide the residual voltage to maintain the performance of appliances and machinery especially those working with sensitive electronics.
4. They provide an extra layer of future proofing for electricity pricing.
5. You can potentially reduce your power bill to zero.
6. If you are off grid you have little option other than a generator.
AGAINST
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1. Contemporary batteries are relatively expensive. However, don’t be fooled by some of the pricing out there as most of the battery cost is in the various margins charged once they arrive in Australia. What sells for $8000 was probably landed for considerably less than half.
2. Saving the electricity to batteries may save you, say, 26c a kilowatt hour for nighttime use but it will deny you possibly 21c a kilowatt hour in feedback tariff if you qualify so the real saving is only 5c a kilowatt hour. 3. Lithium ion (LifePo4) batteries have a degradation curve that means once they approach the end of their effective cycle life they might only be operating at 60% of their original efficiency. (A reason to think more carefully before buying an electric car). |
WHat our Customers Say
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