Nissan has presented in partnership with Eaton the first battery domestic. It’s called xStorage, and on paper, allows you to accumulate electrical energy – renewable sources or obtained in the hours cheaper day – to be consumed when the owner so desired. It has been designed for domestic use, and has been designed by the Nissan Design Studio with the aim of creating something more than a mere appliance. An interesting proposal that in countries like Spain is given face to face with a law that openly discourages greatly their use.
Eaton and Nissan have a distribution network with 1000 authorized professionals in 77 countries.
This battery has been designed for domestic use. a nominal capacity of 4.2 kWh. Their prices start in the 4.000€, not including installation by a professional. By comparison, the Tesla Powerwall have a capacity of 7 kWh and 10 kWh with respective prices of 3,000 and 3,500 dollars. Yes, they are cheaper but they are not sold outside the U.S., so the xStorage has an untapped market for itself. Nissan and Eaton expect to sell 100,000 units in the next 5 years.
Their appearance is interesting, dark tones with red accents. Passes perfectly for a small bookshelf thanks to a size content. One thing to keep in mind is that these batteries are made by 12 cells from the batteries of electric cars Nissan – the Leaf and eNV200. When you reach the end of their useful life, they receive a second life in the form of these batteries. A good example of reuse of automotive components, General Motors is also practicing.
On the paper is all very nice: these batteries accumulate energy, and allow you to download at the hours most expensive of the day, also to accumulate the electricity generated by renewable energies and can withstand all the electrical load of a home in case of power outages. The problem is the so-called “Tax the Sun” by the minister Soria. The batteries interspersed between the electrical network and the final consumer are not legal in conventional installations, according to the Decree 1699/2011. What is the electricity self?
I leave you with an excerpt from the article my partner David Clavero, concerning the draft of Royal Decree which regulates the consumption of energy in Spain:
The last draft revision focuses specifically on the storage of energy self, proposing the application of a so-called toll support for all installations of self-consumption by a minimum of 8,90 € for every kW of contracted power. This measure is directed exclusively to those facilities that intend to make use of systems of energy storage such as that proposed by Tesla/Nissan, but that they remain connected to the network. This toll is defended by the Government as a cost for the maintenance of the connection to the distribution infrastructure of power grid. However, and demonstrating the interest of the draft to discourage the use of batteries, the facilities that do not have accumulators energy will be able to get rid of paying this toll.
But now comes the worst. To curl the curl in this nonsense against the use of systems of renewable energy generation, the new draft also establishes a office acceded to the consumer that you make your own installation of self-consumption (minimum of 0,048869 € per each kWh autoconsumido). This last paragraph states that you must pay to the electricity company for each kWh that you consume from your own installation, giving life to that which has been termed as a tax on the Sun, and in turn reflecting the glaring situation that we live in Spain with respect to the energy model.
The only solution is to not be connected to the electrical grid, with the ups and downs of production and energy insecurity that it produces. Or the availability of a double box in the house, two electrical installations a separate energy self not have any interaction with the electrical network. In this sense, the product of Nissan/Eaton and Tesla makes sense.