What will it cost and what is included in that cost?


What could a ZCell based system cost?

 

The total system cost will be determined by your installer (not by Redflow). We supply your ZCell in its outdoor enclosure with the ZCell Battery Management System unit to your chosen system installer as key components of your overall energy system design.
 
Based upon your needs and requirements, your installer will work with you to choose an appropriate brand and specification of AC inverter/charger to use with your ZCell. They will also include any additional items (such as solar panels and energy flow monitoring devices) that you may elect to install at the same time. 
 
Your installer will provide you with a quotation, install the entire system, commission it, and send you the bill. This cost will vary depending upon your needs and requirements.
 
A full system includes your ZCell (including outdoor enclosure and BMS), a suitable AC battery inverter/charger, other control and measurement gear, plus mounting and wiring, commissioning, and so on.
 
In other words, this is an estimate for everything to the right of the dotted line in the diagram below (well, other than your house!). Note that this diagram contains two ZCells, just to show scalability - but these cost estimates are for a single ZCell system.
 
 AC Coupled battery system example

 

When you are comparing this price to the price of other fully installed energy systems, an important consideration is the  the issue of different energy systems being of different storage sizes. ZCell is a high end system storing a lot of energy and many other battery systems on the market are 'entry level' storage products able to deliver much less energy per cycle. 

 

Comparing system costs

One way to compare systems of different storage sizes - to normalise out this difference -  is to work out the 'cost per useable installed Kilowatt-Hour (kWh)'.

This sounds like a mouthful, but it's as simple as dividing the total installed system cost by the maximum number of Kilowatt-Hours of energy the system can deliver to your home each day. This provides you with a cost per 'unit of storage'.

We believe that a ZCell based energy system will represent great value-for-money because it is based on a battery that we believe to be genuinely a better technical choice, at a unit cost (per kWh) that is comparable to other industry price points.

This sort of relative comparison is made on the basis that you can benefit from delivering up to the full 10kWh per day of energy storage from ZCell back into your home.

Some small homes, or homes with only small energy needs may find that this is simply more capacity than they need, and so they may opt for a smaller battery system instead of a ZCell.

However, our high capacity has other uses, even if your daily energy consumption is smaller, including an increased timeframe over which ZCell can power your home during grid power outages. A larger battery also broadens the timeframe over which your house can operate in a self-supporting manner (not requiring significant grid energy draw) in the presence of sustained cloudy weather.

Some large houses (or houses with high energy usage intensity at night) might well need multiple ZCell units to make the best use of their energy flows. 

It is possible to add more than one ZCell battery, either during initial installation or at a later date.

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