04-18-2014, 04:39 AM
Two amortization schedules: assume a 20-year life on the panels, controller, inverter and wiring. Batteries last 3-10 years, depending.
Assuming a hypothetical $2000 "cabin system" + $1000 worth of batteries that are replaced every five years: about $25/mo.
Propane or DC refrigeration made more sense when panels were $8-10/W.
When comparing to "grid rate", don't forget the SSPP and installation fees...
Assuming a hypothetical $2000 "cabin system" + $1000 worth of batteries that are replaced every five years: about $25/mo.
Propane or DC refrigeration made more sense when panels were $8-10/W.
When comparing to "grid rate", don't forget the SSPP and installation fees...