La Tesla Power Wall 2 It is the second generation of Tesla's famous battery. Since its launch, Tesla has made remarkable improvements to what was already an advanced technology. With it, renewable energies have taken a step forward in their practical application.
Tesla batteries not only offer solar energy storage for consumption when the sun is not shining, but also allow users to achieve greater energy independence. By storing energy produced during the day, the Powerwall becomes a perfect ally to reduce dependence on the electrical grid and increase self-consumption.
Tesla Powerwall 2, a comprehensive home energy solution
The new Powerwall 2 Powerwall 6,4 incorporates several significant improvements in terms of storage capacity and efficiency compared to its predecessor. While the first edition offered a capacity of 2 kWh, the Powerwall 13,5 almost doubles this figure reaching 2 kWh, allowing it to cover the energy needs of a medium-sized home (3-XNUMX rooms) for an entire day.
Another of its strong points is the inclusion of a powerful power inverter, which transforms the energy stored in direct current (DC) into alternating current (AC) so that it can be used in all household appliances. In addition, the battery is scalable, meaning that up to 9 units can be placed in parallel to adapt to the energy needs of larger homes.
Advantages of the Tesla Powerwall 2 battery
Get more out of solar energy
One of the most notable advantages of using the Tesla Powerwall 2 is its ability to store excess energy generated during the day by solar photovoltaic systems. In installations where there is no backup battery, excess energy is often dumped into the grid, which does not make optimal use of resources. With a Powerwall, you can store all solar production that is not consumed immediately, and use it when you really need it, such as at night or on cloudy days.
Independence from the electricity grid
By using one or two Powerwall 2 batteries in combination with a solar photovoltaic system, it is possible to operate the home almost completely without depending on the electrical grid. This not only allows for significant savings on the electricity bill, but also accelerates the transition to cleaner energy, achieving an autonomous system that provides renewable energy 24 hours a day, including periods where solar generation is low.
Protection against power outages
Another interesting feature is the Powerwall 2's ability to act as a backup system in the event of a power outage. In the event of a power outage, it helps maintain power to essential circuits in the home, ensuring that critical appliances such as the refrigerator, lights and heating system continue to operate without interruption.
The most affordable battery on the market
Compared to other home batteries on the market, such as the LG Chem RESU or the Axitec AXIStorage, the Powerwall 2 offers a competitive price. With an approximate cost of €6.300 and an additional €580 for installation, the Powerwall 2 It has one of the best price per kWh ratios, making it an attractive option for those looking to maximize energy efficiency.
Remote control of your energy
With the Tesla app, it is possible to control and monitor in real time not only the performance of your Powerwall, but also that of your solar panels or even your Tesla electric vehicle, from anywhere in the world. This level of control allows for precise adjustment of when and how much energy to store or release, making the system completely flexible and adaptable to the real needs of the home.
How does the Tesla Powerwall 2 work?
The Tesla Powerwall 2 is available in two versions to suit different grid configurations:
- Powerwall 2 AC: It has a built-in inverter that transforms the stored direct current (DC) into alternating current (AC) for use in the home network.
- Powerwall 2 DC: This version does not have an inverter and is designed to be integrated with inverters and chargers from manufacturers such as Solaredge, SMA or Fronius in a direct current (DC) system.
Typical operating diagram in AC version
This image shows how the Powerwall 2 AC integrates into a photovoltaic generation system. A power meter (Tesla Energy Gateway) monitors the flow of energy from the grid and the solar panels, detecting whether there is excess energy that can be stored or whether energy needs to be discharged from the battery.
This system allows the energy demand from the grid to be reduced to a minimum, which translates into constant savings and greater independence from the electrical grid.
Powerwall 2 DC version: isolated systems
The Powerwall 2 DC is ideal for off-grid homes, as it can be connected directly to a charger or hybrid inverter, such as those from SMA or Fronius. This configuration allows the Powerwall to operate in a completely off-grid environment, producing energy from solar panels.
Compatibility in three-phase installations
Although Powerwall 2s do not generate three-phase output, they can be installed in three-phase systems by placing one battery per phase. For storage on all three phases, up to three Powerwalls can be installed, ensuring that energy needs are fully met.
Tesla Powerwall 2 Technical Specifications
- Capacity 13,5 kWh
- Depth of discharge: 100%
- Efficiency: 90% in full cycle
- Power: 5 kW continuous, 7 kW peak
- Compatible applications: Self-consumption with solar energy, load switching based on time of use, independence from the grid
- Warranty: 10 years
- Scalability: up to 9 units in parallel
- Operating temperature: -20°C to 50°C
- Weight: 120 kg
- Installation: Floor or wall mounting, both indoor and outdoor (IP67)
The Powerwall is highly resistant to adverse conditions and can be installed outdoors. Its liquid thermal regulation system ensures that it operates efficiently even in extreme temperatures.
Available in Spain
Tesla has confirmed the availability of the Powerwall 2 in Spain since 2017, although it is necessary to use installers certified by the brand to guarantee the effectiveness and extension of the 10-year warranty. In the event of a malfunction within this period, the battery would be completely replaced at no cost to the user.
Tesla Powerwall 2 Price
The Powerwall's price is one of the factors that makes it so competitive. At around 6.300 euros, it is cheaper than other residential batteries in its category. In addition, the installation option adds approximately 580 euros, making the total outlay close to 8.000 euros for a complete photovoltaic system with turnkey installation.
Although the initial investment is high, the long-term savings from reduced electricity consumption will pay for itself within 7 to 10 years.
News on solar roofs
Tesla's vision is not limited to batteries alone. The company has also developed solar roofs which can be connected to Powerwalls to offer a fully integrated solution. These roofs are made of glass tiles with solar cells, allowing them to offer an aesthetic design and integrate harmoniously into any type of home.
The roofs are available in a variety of designs, including textured glass, black and other options coming soon.
The pillars of the energy revolution according to Tesla
Tesla's approach to its energy generation and storage products is clear: facilitating independence from fossil fuels through three fundamental pillars:
- Generation (solar panels and solar roofs)
- Storage (Powerwall batteries)
- Electric mobility (Tesla vehicles)
The union of these three pillars allows users to have a 100% electric system, powered by renewable energy.
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