Going off grid with Redflow’s ZCell? Here’s how to handle the ‘maintenance purge’.

simon and 2 batteries

Simon Hackett with an early customer’s double Zcell off grid system.

Yesterday, Aussie solar veteran Tony Smith left an interesting question at the bottom of our ZCell battery review. Tony asked, for an off grid application, how to handle the fact that the ZCell battery needs to shut down so it can perform maintenance mode every week or so: [Read more…]

ZCell Battery Review: Better Than Lithium-ion?

redflow zcell vs powerwall etc

How does the Aussie Redflow ZCell compare to lithium ion batteries?

The Australian company Redflow is accepting pre-orders for its new home energy storage system, the ZCell battery.  It has a 10 kilowatt-hour usable storage capacity, can provide 3 kilowatts of continuous power, and is suitable for on-grid and off-grid use.  Deliveries will begin in August 2016.

In this Z-Cell battery review I go deep into the zinc bromide technology’s pros and cons compared to its main challenger: lithium ion batteries.

While there are many lithium-ion storage systems on the market, the Redflow ZCell stands out as the only zinc bromide flow battery.  Its unique chemistry gives it several advantages over lithium-ion systems.  One is it can lie dormant for long periods at any level of charge without suffering from deterioration.  And another is its storage capacity will never decline over its over its entire lifespan.  [Read more…]

Hunt’s gong, renewable targets and Redflow: a mixed bag

It’s been a big week for renewables. A faux minister gets the nod for a fake gong, news that we’ll fail to meet our renewable targets and another Australian battery storage provider pulls on a boot.

News that Australia’s very own alleged Minister for the Environment Greg Hunt was named World’s Best Minister in a glittering ceremony in oil-drenched Dubai was cause for mirth. A real thigh slapper as Greg swanned about, really seeming to believe that despite his steadily dismantling of renewables and apparent efforts to endanger the Australian environment deserved a reward.

However the smiles were soon wiped away by the news that our renewable energy targets won’t be met. According to analysis by Green Energy Markets, the supply of renewable energy will fall short of the requirement for 2018 unless there’s a remarkable turnaround. At least 4,400MW of new renewable energy capacity needs to be committed this year in large-scale projects for the renewable energy target to make its goal of 33,000GWh by 2020, according to the environmental market research company. [Read more…]