See how a battery handles your home.
Model whole-house arbitrage savings or backup runtime in real time. Adjust the inputs to match your situation.
Battery
Include battery
Brand
Quantity 2
2
Total
32 kWh
Usable (80% DOD)
25.6 kWh
Continuous
24 kW
Backup Hours
— hr
Peak Coverage
—
—
Solar
Include solar
System size 8.0 kW DC
Shade loss 0%
0% = full sun · 50% = heavily shaded
Production adjustment +0%
Fine-tune vs. OpenSolar estimate or drone-verified output
Est. Annual
— kWh
Est. Daily
— kWh
Home Load Profile
Source
Daily Usage 30 kWh/day
Home Type
Season
Drop CSV or PDF bill here or click to upload
Con Ed Green Button CSV · or PDF electric bill
Con Ed Green Button CSV · or PDF electric bill
Annual Usage
— kWh/yr
Rate III TOU (Voluntary Plan)
Summer Peak Rate $/kWh · Jun–Sep · 8 AM–midnight
Winter Peak Rate $/kWh · Oct–May · 8 AM–midnight
Off-Peak Rate $/kWh · midnight–8 AM year-round
EL1 Standard Rate (current bill) $/kWh
What the homeowner pays today on Con Ed's flat residential rate · Westchester all-in ≈ $0.38/kWh · battery only saves $ after switching to Rate III TOU
Basic Service Charge $/month
Con Ed default ~$22/mo · always paid, even with 100% offset
Solar Export Credit $/kWh
VDER value-stack credit · Con Ed Zone H ≈ $0.16/kWh
Battery Discharge Window
2 PM – 10 PM
to
Rate III peak rate applies 8 AM – midnight regardless. Pick when the battery dispatches within that window.
Annual Outcome · Setup A vs Setup B
Setup A (Current)
$0
—
Setup B (Proposed)
$0
—
Δ Annual Save
$0
—
⚡ Both setups fully cover the peak window. Adding more battery capacity won't increase arbitrage savings under this load. Try a heavier load (heat pump, EV, higher kWh/day) to see the difference.
Hero stats · Setup B (Proposed) · switch tabs to edit either setup
Daily Savings
$0.00
EL1 daily cost − Rate III daily cost
Annual Savings (Switch + Battery)
$0
EL1 annual bill minus Rate III with battery
Peak kWh Avoided
0
per day
Battery Utilization
0%
of usable cap per cycle
Estimated Runtime · Critical Loads
— hr
Select loads to estimate runtime
Whole-House Runtime
— hr
avg daily load
Critical Load Draw
0 W
continuous
Peak Surge Capacity
0 kW
battery output limit
Annual Production
0 kWh
after shade & adjustment
Year 1 Savings
$0
grows 5% / yr with rate escalator
Home Offset
0%
of annual usage
Excess to Grid
0 kWh
net metering credit
System Economics · 5% utility escalator
—
Gross Cost
$0
NY State Credit
−$0
Net Cost
$0
Yr 1 Savings
$0
Yr 25 Savings
$0
Payback
— yrs
25-Yr Total Savings
$0
24-Hour Battery Behavior
SOC and load shifted to battery during peak window