According to a story by Giles Parkinson, solar batteries are poised to make power cheaper than the grid. Here's the excerpt:
LG Chem, the South Korean battery storage maker that has so far claimed the biggest share of the nascent Australian market, says that solar and battery storage is already beating grid power in most states.
The assessment by LG Chem follows similar analysis by private energy consultants, and suggests that the market for battery storage could be about to take off, even with looming threats of restrictions.
According to Jamie Allen, the marketing head in Australia for LG Chem, a 5kW rooftop solar system and a 10kWh battery storage device (such as LG Chem’s own 9.8kWh offering) can be purchased and installed for around $15,000.
Based on the assumed output of around 22kWh a day from the solar array, that makes the cost per kWh of solar power at around 22c/kWh over 10 years.