La Tesla Power Wall 2 It is the second generation of the well-known Tesla Powerwall battery. Tesla Batteries has achieved something almost impossible, take a great leap forward with this new model, substantially improving something that was already very very good.
Powerwall integrates with solar energy to harness the abundant capacity of the sun and reduce our dependence on fossil fuels. Solar energy can be stored during the day and used at night to power any home.
Tesla Powerwall 2, a comprehensive home energy solution
The new lithium-ion battery for home and small businesses Tesla Power Wall 2 doubles the capacity of its predecessor. The first version has a storage capacity of 6,4 KW.
It also includes a powerful power inverter to convert the energy stored in DC (Direct Current) into useful energy in AC (Alternating Current), in order to be able to use it throughout the house.
With twice the capacity of the first generation, the Tesla Powerwall 2 can power a medium size house (2 or 3 rooms) for a whole day. We can also highlight its compact size, the ability to stack several units and the built-in inverter, allows installation to be done easily anywhere.
Advantages of the Tesla Powerwall 2 battery
Get more out of solar energy
Even in homes where a battery-free solar photovoltaic generation system already exists, much of the production from that system is lost when it is fed into the grid or it is not taken advantage of, when using zero injection functions.
With the Powerwall 2 you can store all the production of your solar system and get the most out of the solar panels, to be able to use that energy in any momentEither day or night.
You can get independence from the power grid
Using one or two lithium batteries Tesla Powerwall 2 and by combining them with photovoltaic solar energy you can power your home without depending on the public electricity grid, with the annual savings that this implies.
Protect homes against grid power outages
Powerwall 2 protects your home against power outages, and allows lighting and all appliances to continue to operate without a problem, until service is restored.
Powerwall 2, the most affordable battery
In addition, the Tesla Powerwall 2 battery offers the best price per kWh of capacity on the market, thus adapting to the daily energy needs of most homes, and reducing the fixed energy costs of conventional electricity.
Powerwall is a fully automated system that is easy to install and maintenance free
Check your energy from anywhere
With the Tesla app you can easily control your Powerwall, solar panels, or your Model S or X, anytime, anywhere.
Tesla Powerwall 2 operation
The Tesla Powerwall 2 battery will have two versions:
- Tesla Powerwall 2 AC, with inverter included and coupling on the AC side
- Tesla Powerwall 2 DC, without inverter and compatible with charger inverters of the main manufacturers (Solaredge, SMA, Fronius, etc.)
Schematic of the Tesla Powerwall 2 AC
In the previous image, you can see a diagram of the typical operation of a tesla powerwall 2 battery AC, in combination with a photovoltaic generation system, coupled by a home grid connection inverter.
An energy meter is installed at the head (Tesla Energy Gateway) of the home's electrical installation, which is responsible for measuring whether the home's consumption demand power from the grid or not. It also measures the energy outgoing to the grid, in the event that the energy generated by the photovoltaic system is greater than that demanded by the home at that time.
In this way, the Powerwall 2 battery stores energy if there is surplus photovoltaic production or provides energy in case the panels cannot provide all the power and energy demanded by the home, such as on foggy days or at night.
This way of working tries to consume the minimum necessary energy from the network, producing great savings most of the time.
Tesla Powerwall 2 DC working diagram
The Powerwall 2 DC works in direct current, connected like a classic lead battery, to a compatible inverter charger or hybrid inverter (SMA, Fronius, Solaredge, etc.).
This configuration will allow working with the Tesla Powerwall battery in isolated systems, coupled on the direct current side, and not only in grid-connected installations, so the option off-grid it is also contemplated. This implies on the other hand that the wiring interface for the AC Powerwall will be different from the DC version.
Tesla Powerwall 2 in XNUMX-phase installations
Tesla Powerwall 2 battery can work in three-phase installations when working with three-phase hybrid inverters, such as the Fronius Symo Hybrid.
The Powerwall 2 does not produce a three phase output current, however it can be installed in a three phase system by placing a Tesla battery in one of the phases. A battery can also be installed in each phase to provide energy storage in all three phases.
Tesla Powerwall 2 Battery Specifications
- Capacity: 13,5 kWh
- Depth of discharge: 100%
- Efficiency: 90% full cycle
- Power: 7 kW peak / 5 kW continuous
- Compatible applications:
- Self-consumption with solar energy
- Charge switching by usage time
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- Independence from the electricity grid
- Guarantee: 10 years
- Scalability: Up to 9 Powerwall units can be connected in parallel to supply power to homes of any size.
- Operating temperature: -20 ° C to 50 ° C
- Dimensions: L x W x D: 1150mm x 755mm x 155mm
- Weight: 120 kg
- Installation: Floor or wall mounting. Its durable cover protects it against water or dust and allows it to be installed both indoors and outdoors (IP67).
- certification: UL and IEC certifications. It complies with the regulations of the electrical network.
- Security: protected against any risk to the touch. No loose cables or vents.
- Liquid refrigeration: The liquid thermal regulation system regulates the internal temperature of the Powerwall to maximize battery performance in all environmental conditions.
Battery Tesla Spain
La tesla battery Powerwall 2 will be available in Spain in 2017, although the final release date is unknown. Installation must be carried out exclusively by installers certified by Tesla, to ensure perfect operation and 10 years warranty against malfunction, in which case, the battery will be completely replaced free of charge.
Tesla Battery Price
El Tesla Powerwall 2 battery price is the most affordable price per kWh of capacity on the market today, if we compare it with the price of its direct competitors, such as the LG Chem RESU or the Axitec AXIStorage (although these offer the advantage of being able to be used in isolated photovoltaic systems together with a good inverter charger, such as the SMA Sunny Island or the Victron Multiplus or Quattro). Its price will be around will be around € 6300, plus € 580 for installation.
The cost of the first version is a little cheaper, about 4.500 euros. Let's not forget that it is designed to complement a photovoltaic solar system so that, while the solar panels are producing, the home consumes directly from them or if there is no consumption, this energy charges the Tesla battery.
When there are not only the plates are not working, the house uses the energy stored in the battery and if it still needs more, it can connect to the general electrical network and consume. With the photovoltaic installation, the cost of the turnkey project go up to 8.000 or 9.000 euros. This cost would be amortized in between seven and ten years
Solar roof
But Tesla's bet is not only on batteries, but on producing plates that fill these batteries with energy. Elon Musk's brilliant solution was to create adaptable solar panels to all family home roofs, with a discreet appearance and at a lower price than conventional plates
As for solar roofs, they are made of glass tiles with integrated solar cells, so they look as aesthetic ("or better" Elon Musk promised in his presentation) than conventional roofs. The tiles each have a unique print, which gives them an almost artisan appearance and thus no two roofs will be exactly the same.
Additionally, Tesla will release several different designs to match any home design. This is a collaboration between SolarCity and Tesla. According to Elon Musk, "We created Tesla as an electric car company, but it's really all about accelerating the transition to renewable energy sources."
Available soon
Through the company's website, all those who wish to do so can get hold of this solar roof. Among the various countries that Tesla has chosen to put the solar roof up for sale includes Spain, where a deposit of 930 euros will have to be made to reserve this product that will not arrive until 2018.
When it comes to models, Tesla has only released two of its four versions of solar roof tiles: black glass tile tiles and textured glass tiles. Meanwhile, the toscana, a version similar to the conventional tile, and the slate, will arrive for 2018.
The three pillars of energy change
Musk has also explained that there are three parts in converting to solar energy: generation (in the form of solar panels), storage (batteries) and transportation (electric cars). His intention is to cover the three steps with his company Tesla.
Hence the idea of joining the panels and batteries. Until now, anyone who wanted to bet on solar energy and do without the electricity grid as much as possible needed to buy the panels from a second company, and the batteries from Tesla. From now on, the steps will they simplify a lot, because the panels and batteries will come together. If to that we add Tesla electric cars and a new charger, we have a perfect 3 in 1. Below we can see the different car models that the company has, in order to carry out the 3 in 1 discussed above.
Tesla Model S
El Tesla Model S It is a five-door luxury saloon. Marketed since 2012, it has the highest rating in terms of safety and is a success in terms of sales inside and outside the United States. Equipped with a 60, 75, 90 or 100 kWh battery pack, it surpasses the Tesla Roadster in autonomy, being capable of traveling more than 400 kilometers between charges. The engine runs on the rear axle and the batteries are lying on the ground. Outcome? A lower center of gravity so that the saloon travels the same distance from the road as a sports car. The Tesla Model S It is available in two different traction configurations: rear and dual motor all-wheel drive. This last configuration equips a motor on both axles, digitally monitored and controlled, which allows optimal traction in any situation. The Tesla Model S maximizes the capacity of the battery pack with an aerodynamic design of flowing lines allowing less resistance in the air flow. Inside, the 17-inch touchscreen is striking, angled towards the driver and includes both day and night modes for distraction-free visibility. Each surface, upholstery and seam balances an optimal tactile and visual sensation, as well as respect for the environment.
Tesla Model X
Tesla expanded its range of electric models with the Tesla Model One of the most curious elements of the car and its future hallmark: the spectacular rear doors which in Tesla they have dubbed 'hawk wing doors'. Inside you find more space and up to three rows of seats for seven passengers. It has a 90 kWh battery and a long list of equipment that includes autonomous parking, heated leather seats, daytime running lights, automatic emergency braking, folding third row of seats, keyless access and automatic tailgate. Another of the most curious elements of the Tesla Model X is the chemical or biological protection button. Elon Musk has been proud to affirm that the Tesla Model X is the first car in the world prepared for chemical or biological attack, thanks to its gigantic air filter, up to ten times greater than that of any other modern vehicle. This achieves that in normal conditions, in the cabin of the Tesla Model X an air quality is found at the level of any hospital room. In the 'biological attack' mode, this filter is capable of filtering bacteria 300 times better than a conventional one, 500 times better allergens, 700 times environmental pollution and up to 800 times more effective at filtering viruses.
Model 3
After a long wait, Tesla Motors presents the Tesla Model 3, which will become the third member of the current Tesla range. Positioned as the most economical model (the Model 3 will start at $ 35.000 in the United States), it offers a range of approximately 350 kilometers, in addition to being able to perform 0 to 100 km / h in less than six seconds. This model completes the 'Master Plan' of Elon Musk and Tesla, which began with the Tesla Roadster, progressed with the Model S, and grew to include the Model X. The Tesla Model 3 is a compact sedan (it has dimensions 4,7 meters long) with five seats, 100% electric, which aims to rival traditional premium sedans like the BMW 3 Series or the Audi A4. Like the rest of the models in the Tesla range, it will be a technologically very advanced car, since it will come standard with hardware with autonomous driving functionality and the ability to quickly recharge.
Tesla Battery and Royal Decree of Self-consumption
Unfortunately, Spain suffers one of the worst legislation for Self-consumption in the world. The well-known "sun tax”The take-off of this type of facility is hindering, while in the rest of the world its growth is unstoppable.
Royal Decree 900 / 2015
El Royal Decree 900 / 2015 It put an end to the "unlawfulness" of self-consumption facilities, defining technical and administrative conditions to be able to legalize them in a more specific way.
However, precisely some of these technical-administrative conditions, such as the obligation to install a second meter and the procedure that must be carried out with the distribution company makes the legalization process expensive, extremely difficult and slow, preventing and discouraging self-consumption facilities.
If to all this we add the tax on the sun, which is a charge for energy produced, of which only installations in homes or premises with contracted electrical supplies of less than 10kW single-phase are temporarily released, the disincentive is total.
In addition, installations that use accumulation in batteries, such as the battery Tesla Powerwall 2, the decree also charges them with a fixed cost that depends on the power, this concept is not very expensive, but it charges and disincentives even more the electrical self-production facilities.
In any case, the good news is that A Proposal for a Law to Promote Self-consumption is currently under consideration in the Congress of DeputiesWe still do not know if it will prosper, since the Government vetoed the proposal. Ciudadanos, at the same time promoter of the proposal and support of the Government in the veto, is considering today whether to maintain the veto or lift it, depending on the negotiations that are being carried out with the Ministry of Industry.
If the proposal goes ahead, they will probably eliminate the greatest obstacles to the development of Self-consumption in our country, from decree RD900 / 2015: the need for second counter, the procedure with the distributor and the fixed and variable charges, the well-known sun tax.
Greetings: I want to purchase a Tesla 2 battery for a 12KW Inverter. I don't understand if one is enough or if I would have to combine two.
Where can I buy it?
What is the Shipping for Puerto Rico?
Extremely interesting .. !!
ONE OR SEVERAL BATTERIES ARE REQUIRED FOR A DEMANDED LOAD OF 12 KW, YOU HAVE SOLAR PANELS, WHAT IS INTENDED IS TO REMOVE THE CFE CONNECTION AND WORK WITH THE PANELS AND BATTERIES TO PROVIDE THAT ELECTRICITY