Battery Energy Storage

BESS Budget Calculator

Multi-project budgetary cost model. Enter MW and duration; the model back-calculates MWh and budgets PCS + DC storage with cost overrun adder.

Portfolio Total
$0
0 projects
Total Power
0
MW
Total Energy
0
MWh
Avg Cost / MWh
$0
blended

Constants

ROUNDUP(MW ÷ 2.5)
Project MW Hours Adder % MWh Blocks PCS $ DC $ Adder $ Total $/MWh
Portfolio Totals — — — $0 $0 $0 $0 —
0 projects
How it works. Blocks = ROUNDUP(MW ÷ 2.5)  ·  Effective MW = Blocks × 2.5  ·  MWh = Effective MW × Hours  ·  PCS $ = Blocks × $235K  ·  DC $ = MWh × 1000 × $120  ·  Adder $ = (PCS + DC) × Adder%  ·  Total = PCS + DC + Adder

Rounding. PCS comes in 2.5 MW blocks, so the build is sized up to the next block. MWh, DC budget, and totals all reflect the effective installed MW, not the raw input. The Blocks cell shows the rounded MW in parentheses when it differs from your input.

Worked example. Input 4 MW, 2 hr, 5% adder → 2 blocks (5 MW effective), 10 MWh, PCS $470K, DC $1.2M, Subtotal $1.67M, Adder $83.5K, Total $1,753,500.