What could a ZCell based system cost?
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.