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Tesla Motors Livestream

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Re: Tesla Motors Livestream

#25
The details are up on the site: http://www.teslamotors.com/presskit/teslaenergy

   The Powerwall is available in 10kWh, optimized for backup
 applications or 7kWh optimized for daily use applications. 
  Both can be connected with solar or grid and both can provide 
  backup power. The 10kWh Powerwall is optimized to provide 
  backup when the grid goes down, providing power for your home 
  when you need it most. When paired with solar power, the 7kWh 
  Powerwall can be used in daily cycling to extend the 
  environmental and cost benefits of solar into the night when 
  sunlight is unavailable.

  Tesla’s selling price to installers is $3500 for 10kWh and 
  $3000 for 7kWh. (Price excludes inverter and installation.) 
Deliveries begin in late Summer.

Re: Tesla Motors Livestream

#27
At least we know that the product will be called Powerwall.

On a side note, there might be a reason why MOST live streaming event start late - it provides a sense of scarcity and drives more views. I am not saying that it is happening in this particular case, but I know for a fact that it is a technique sometimes used/tested by professionals; I don't know how often though.

Re: Tesla Motors Livestream

#30
post #3

It'll be interesting to see how this is pitched and what it's price point is... I'm still not convinced that energy arbitrage is profitable enough for individual homes given the current cost of the storage.

It might be. The significant return to individuals should come when they can participate in "ancillary services". These are classes of power contribution or absorption that meet short-term, urgent grid management needs.

For one example among many: if grid frequency drops below its nominal 60Hz, that indicates electricity demand exceeds supply, and the kilotons of spinning iron and copper in the generators that supply the grid are slowing down as they contribute rotational kinetic energy to meet demand. Grid management options for this type of demand/supply mismatch include calling for increased output from generators that aren't already at their max, engaging idle-output (but phase synchronized) spinning reserve generators, and buying power from contiguous grids.

Power sold under these circumstances can be priced at large multiples of base rates (like net metering rates) because of its high value in stabilizing the grid.

Smart grid infrastructure (communications, controllers, bidirectional inverters, etc) will allow grid managers (or localized intelligent algorithms) to draw on residential energy storage for ancillary services. These services should bring residential participants much higher returns than existing simple and not very lucrative net metering schedules. However, I imagine there will be significant legal combat before resident owners of distributed storage are allowed to recover market rates for their ancillary service contributions.

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