Commercial/ROI Calculator

Commercial backup ROI comparison

Diesel generator vs Renon MPack 261AS battery vs battery + solar

Facility profile

500,000
100
$0.105
$10

Diesel genset (100 kW)

$100,000
24
$4.00
$2,500

Renon MPack 261AS

$150,000
$350,000
120
30%

Rate trends

6.5%
4.0%
3.0%
Horizon:

Diesel only

Upfront

$100,000

Bill savings / yr

$0

Net at year 15

-$161,998

Often best ROI

Battery only

Net upfront (after ITC)

$105,000

Bill savings yr 1

$11,643

Net at year 15

$85,701

Battery + solar

Net upfront (after ITC)

$245,000

Bill savings yr 1

$30,543

Net at year 15

$282,522

Cumulative net position over time

Year 1 savings breakdown

Defaults reflect a Houston-area facility on CenterPoint TDU with Texas 4CP demand charge structure. Solar production uses 1,500 kWh/kW/year. Battery degradation 2%/yr; solar degradation 0.5%/yr. Solar inverter replacement modeled at year 12. Does not include MACRS accelerated depreciation.