Indicative payback periods & IRR for SunGrow PowCube as part of a new system or as retrofit

Indicative payback periods & IRR for SunGrow PowCube as part of a new system or as retrofit

(Results for Sydney as of Jan 2018. All results indicative only; actual results will depend on your individual circumstances. You can explore outcomes yourself with Solar Choice’s Solar & Battery Sizing & Payback Estimator.)

Approx costs Tariff type Payback period (years) IRR Savings year 1 (battery only) Savings year 1 (solar only)
Brand new ‘whole’ solar + battery system
5kW solar system for $6,200 (incl $1,000 premium for hybrid inverter) plus $3,500 for battery.
Total: From $11,200
Flat rate – 25c/kWh 7.5 14% $330 $1,200
TOU 7.1 16% $400 $1,200
Full retrofit to existing 5kW solar system
(inverter + battery)
From $8,000
(includes emergency backup)
Flat rate – 25c/kWh >20 -2.6% $330 $1,200
TOU >20 -5.5% $430 $1,200
Battery only

(as part of simple retrofit orĀ  ‘whole’ system)

From $5,000 Flat rate – 25c/kWh >20 years (full system)

/ 11 years (retrofit)

 

15% / -2.6% $330 $1,200
TOU 7.1 (full system)

/ 11.9 (retrofit)

16% / 1.4% $430 $1,200
Jeff Sykes