wholesale solar, wind and alternative energy
 

Off-Grid Home Power System Size Calculator

Wholesale Solar Products Complete Systems Helpful Information Sales & Specials Contact




POLLUTION CALCULATOR
Use this
Pollution Calculator
to see how your use of solar energy will reduce greenhouse gases and other toxic wastes.

Call Wholesale Solar
to order:

1 (800) 472-1142

Renewable Off-Grid Energy System
Minimum System Size Calculator

How big should your Off-Grid system be?
If you are moving from a utility-connected home in the 'burbs to an off-grid home in the boonies, you will have the opportunity (perhaps necessity) of downsizing your electricity usage. In order to calculate how large your home power system needs to be, run the calculator below TWICE. Compare and adjust your plans according to your budget and lifestyle.

  • Run it first with numbers from your current electricity usage.
  • Then run it with figures from working through the Load Evaluation Worksheet, based on the energy efficient lighting and appliances you will choose for your new off-grid home.


For an approximate system cost please see our Off-Grid System Cost Guide

BACK TO Getting Started MAIN PAGE

SUN HOURS/DAY ZONE MAP

How Many Sun Hours a Day Do You Get?

Zone 1      6    hours
Zone 2      5.5 hours
Zone 3      5    hours
Zone 4      4.5 hours
Zone 5      4.2 hours
Zone 6      3.5 hours

The hourly figure indicates the average (over the course of the year) amount of insolation (full sun hours) for these zones.  These figures are based on the yearly average; consequently, systems based on these figures will provide more power in summer and less in winter.  Winter figures for daily solar gain may be from 25% to 50% LESS than these average figures. 


 
All Products Index
Appliances
Back-up Power
Batteries
Battery Racks
Cables
Charge Controllers
Disconnects
    - Breakers
    - Fuses
Grid-Tied Power Systems
Inverters
Meters
Package Systems
Pre-Wired Power Centers
RV & Marine Power
Solar Panels
Solar Panel Racks
    or Mounts  
Solar Panel Trackers
Water Pumps
Wind Generators/
    
- Wind Turbines
Wiring




































Back to Top



















































Back to Top
















































Back to Top


























Back to Top

design by: Shasta Marketing