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Will The Tesla Powerwall II Be Eligible For Rebate?

Will the Tesla Powerwall II be eligible for rebate?

The concept that the most popular battery on the market won’t be available for rebate is untrue. To clear this matter up, we spoke to Tesla. The Tesla Powerwall II battery will be available for the rebate.

Let’s recap. A document was released listing criteria for eligibility for the battery rebate. The following information from this document was speculated on:

   4. The End-User Equipment must have a warranty of at least 10 years and guarantee that at least seventy percent (70%) of Usable Capacity is retained 10 years from the date the End-User Equipment is installed at the site.

   5. The End-User Equipment warranty must define the normal use conditions during the operation of the End-User Equipment as not being less than:

  • A minimum ambient temperature range of -10°C to 50°C
  • A minimum warranted throughput of 3.65 MWh per kWh of Usable Battery Capacity
 
 In layman’s terms, the warranty of the battery must:
  1. Last 10 years or more.
  2. Guarantee 70% of storage after 10 years.
  3. Define operating temperature range as no less than -10°C to 50°C.
  4. Warrant a minimum throughput of 3.65 MWh per kWh of usable battery capacity.
 
Let’s match the criteria to the Tesla Powerwall II. The Tesla Powerwall II warranty:
  1. Lasts 10 years.
  2. Guarantees 70% of storage after 10 years.
  3. Defines operating temperature range as -20°C to 50°C.
  4. This is where it gets a little tricky.
 
Answering 4:

For self-consumption, Tesla warrants unlimited cycles. This means that there is no limit to throughput, which is of course greater than 3.65 MWh per kWh of usable battery capacity.

For other applications, Tesla warrants 37.8 MWh of aggregate throughput, which equals 2.8 MWh per kWh of usable battery capacity. These “other” applications include joining a VPP (Virtual Power Plant). Having checked with Tesla, in the case of a VPP, you are still allowed unlimited cycles while on a VPP plan. Just, each time the VPP pulls from the battery, it ticks off a little bit of that 37.8 MWh limit. A VPP would have to pull greater than 10.3 kWh from your battery every day for 10 years to go over this 37.8 MWh throughput limit. This won’t happen, that’s not how VPPs work.

TLDR:

The Tesla Powerwall II battery is eligible for rebate.

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