3mo ago

Tesla paid Powerwall owners $10 million through virtual power plants

electrek.co

11 comments

Just remember the charge discharge cycle cost around 5 cent per kWh in wear on the battery.
- Where did you get the price figure from? I want to read more into it
  
  Calculating from cost of battery, for an about 10 kWh battery, and estimating 3650 full charge cycles which is the max for a typical estimated 10n year lifespan.
  To get more accurate numbers you need to do the calculation on the specific battery.
- Even this is only kind of true! There's markets where you're paid to discharge into the grid, but also most countries have "baselined" markets, where using less electricity than normal at that time is considered the same as an export. Which something lime a powerwall lets you do by being flexible on when you use it vs the grid. Situations like that are pretty much straight win win.
  
  Even this is only kind of true!
  I don't understand what you mean? A battery has a limited durability, and selling from battery wears the battery, the cost of that is around 5 cent per kWh. Of course it varies depending on the durability and price of the battery, if it's an older battery, the price is higher.
  So in short, if you get less than 5 cent for selling electricity from your battery, you may be selling at less than it cost you to store that power.
  most countries have “baselined” markets, where using less electricity than normal at that time is considered the same as an export.
  I have never heard of that before, but I doubt Tesla is paying you for using less power.

11 comments