Tesla Powerwall

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Tesla Powerwall 2

Tesla Powerwall and Tesla Powerpack are lithium-ion batteries from the electric car manufacturer Tesla, Inc. , which are offered as solar batteries for private households under the name Powerwall , and with around ten times the basic capacity as a power pack for commercial applications.

The electrical energy storage system consists of accumulators , charge control and a liquid cooling system.

The Californian company Tesla Motors , previously known primarily as an electric car manufacturer , announced on May 1, 2015 that it would start producing the Powerwall . The Powerwall has been produced in Tesla Gigafactory 1 in Nevada since October 2015 .

Technical structure and functionality

Powerwall

The Tesla Powerwall contains liquid-cooled lithium-ion cells .

The Powerwall has its own control and data connection so that it can be networked with each other, with other devices in the household (“ Smart Home ”) and with an intelligent power network (“Smart Grid”). It is also possible, for example, to integrate an electric car like the one from Tesla into this power grid.

The wall-mountable system was originally intended to be available in two sizes. The large model should have a capacity of 10  kWh and cost 3500 US dollars, the smaller model should come on the market with 6.4 kWh at the price of 3000 US dollars. The dimensions for a Powerwall are 130 cm × 86 cm × 18 cm (approx. 200 l) with a weight of 100 kg. Both models have a charging and discharging power of 2.0 kW continuously and 3.3 kW peak power at a voltage of 350 to 450 volts and a current of 9.5 A. According to Tesla, the efficiency of the Powerwall is 92 percent.

However, production of the 10 kWh Powerwall was discontinued and only the 6.4 kWh version was produced and sold for private customers. The 6.4 kWh Powerwall cost $ 3,000 in the United States . For customers, it should be possible to connect up to 9 batteries to each other in order to achieve a total capacity of 57.6 kWh. The Powerwall 2 will be delivered from December 2016. It has a usable capacity of 13.5 kWh and at 115 cm × 75.5 cm × 15.5 cm is slightly smaller and weighs 120 kg. The power is 5 kW continuously and 7 kW peak, Tesla states that the energy efficiency is 90%. The costs for the Powerwall 2 are between 10,400 and 12,600 euros, consisting of the Powerwall with internal inverter (7,350 euros "without installation and supporting hardware"), "supporting hardware" (1,950 euros) and installation costs ("... generally between 1,100 and 3,300 euros "). The number of charging cycles is not specified. Tesla offers a 10-year guarantee for the Powerwall. The Powerwall can be installed both indoors and outdoors.

Powerpack

Powerpack is the large version of the Powerwall designed for industrial use. The Powerpack 2 has a capacity of 210 kWh. As an example, between September 2016 and December 2016, Tesla installed a network storage system for Southern California Edison with a capacity of 80 MWh and an output of 20 MW. Tesla installed 400 Powerpack 2 modules at the Mira Loma transformer station in California. The storage system is used to store excess energy when the network load is low and to feed this energy back into the network during peak loads. Before that, this task was done by gas-fired power plants .

Cooperations

Tesla has announced a cooperation with the Hamburg green electricity provider Lichtblick for Germany . The batteries are supposed to absorb the electricity generated by photovoltaic systems in order to relieve the power grid. If necessary, the Powerwall feeds stored electricity back into the grid. Powerwall owners should receive compensation for both. Lichtblick has been installing Powerwalls since March 2016.

Other Tesla partners are the inverter manufacturer Fronius and SolarEdge . The inverter manufacturer SMA Solar Technology has been supplying Tesla-compatible inverters for high-voltage batteries such as the Tesla Powerwall since March 2016 . According to SMA board spokesman Urbon, it is not necessary to convert existing solar systems.

In Austria, the electricity company Verbund will be selling the Tesla Powerwall together with the PV provider Solavolta from 2016 .

Web links

Individual evidence

  1. ^ Rudolf Opitz: Tesla Powerwall: Energy storage for the home. In: heise.de. Heise Zeitschriften Verlag , May 1, 2015, accessed on May 4, 2015 .
  2. ↑ Wolfgang Stuflesser: Tesla presents “Powerwall” The battery of the future? In: tagesschau.de. ARD , May 1, 2015, archived from the original on May 2, 2015 ; accessed on May 4, 2015 .
  3. ↑ Jürgen Schmieder, Matthias Huber: Solar batteries for the home - this is how Tesla wants to make electricity cheaper. In: sueddeutsche.de. Süddeutsche Zeitung , May 1, 2015, accessed on May 5, 2015 .
  4. ↑ a b Specifications Powerwall. In: teslamotors.com. Tesla Motors , April 14, 2016, accessed April 14, 2016 .
  5. ↑ Reactions to the new Tesla battery storage system. In: pv-magazine.de. PV Magazine, May 4, 2015, accessed May 11, 2015 .
  6. ↑ Tesla Motors is removing 10 kWh Powerwall from its product range. In: it-times.de. IT Times, March 21, 2016, accessed July 31, 2016.
  7. ^ Bill Howard: Tesla kills off its 10-kWh Powerwall: The chemistry wasn't there. In: extremetech.com. ExtremeTech, March 30, 2016, accessed July 31, 2016.
  8. ↑ Powerwall: How Tesla wants to revolutionize the electricity market. In: bluemind.tv. June 8, 2015, accessed January 19, 2016 .
  9. ↑ Darrell Etherington, Greg Kumparak: Tesla's Powerwall 2 packs over twice the energy storage. In: TechCrunch. Retrieved December 30, 2016 .
  10. ↑ The Powerwall - your power storage. Retrieved June 12, 2018 .
  11. ↑ Tesla Powerwall. In: www.tesla.com. Retrieved December 30, 2016 (Austrian German).
  12. ↑ Tesla puts network storage in California into operation In: golem.de. January 25, 2017. Retrieved January 27, 2017.
  13. ↑ Tesla quietly brings online its massive - biggest in the world - 80 MWh Powerpack station with Southern California Edison In: electrek.co. January 23, 2017. Retrieved January 27, 2017.
  14. ↑ Stefan Schultz: Battery for self-sufficiency: Tesla and Lichtblick forge a power storage alliance. In: spiegel.de. May 1, 2015, accessed May 4, 2015 .
  15. ↑ Decentralized energy supply: the first Tesla Powerwall hangs on the LichtBlick swarm . In: ecomento.tv . March 10, 2016. Accessed March 31, 2016.
  16. ↑ Franz Hubík: SMA Solar: German Group joins forces with Tesla. In: handelsblatt.com. Handelsblatt , January 19, 2016, accessed on January 20, 2016 .
  17. ↑ Stephan Hiller: SMA Solar is cooperating with Tesla and will be supplying inverters from March . In: handelsblatt.com . January 21, 2016. Retrieved January 18, 2016.
  18. ↑ SMA is launching an inverter for high-voltage batteries .
  19. ↑ With its new inverter, SMA is targeting high-voltage batteries such as the Tesla Powerwall. In: pv-magazine.de. PV Magazine, January 18, 2016, accessed July 3, 2016 .
  20. ↑ https://www.verbund.com/en-at/about-verbund/news-press/press-releases/2016/03/07/erste-powerwall