Model: SB48-21
Retail price: $46,000
Investors price: $36,800 if purchased before December 31, 2022.
90% DOD = 43.2 KWH per day
$43.20 per day x 365 days = $15,768 annual revenue
30% Tax Credits = $11,040
Section 179 bonus depreciation cash equiv: $23,920
First year revenue from battery sell back: $15,768
Net cost after year one: ($13,928)