Grid tie home power solar electric system minimum system size calculator

Grid tie system size calculator.

Search Site for Anything

Testimonials

See What Our Clients
Have to Say

Customer Gallery

STEP 3: Grid-Tie Energy System Minimum System Size Calculator

How big should your Grid-Intertied home power system be?

This calculator will give you an approximate system wattage so that you can get an idea of cost and components needed for your system.

Please work with experienced Wholesale Solar staff to design a system which fits within your budget and can be expanded as needed.

View our Grid Tie Systems

The Cost of Off Grid Solar System: Relevant Topics

Four Easy Steps to Design Your Own System

	Lower Your Energy Use!
	Decide What Kind of System You Need
	Size Your System for Off Grid or Size your System for Grid-tie
	Pick your Components or Let us Design Your System. Call us: 1(800) 472-1142

Grid-Tie Energy System Size Calculator
1. How much electricity do you use each month? Look at your electric bills from the past 6 months (or less) and find the average number of Kilowatt Hours (KwH) per month. Put this number in the space to the right	KWH/Month
2. What percentage of your house/business power usage will be supplied by solar/wind power from this system? If you want to produce 100% of your electricity, put 100.	%
3. How many Peak Sun Hours do you get per day? Look at the Solar Map below to find this number.	Hours

Minimum System Size:	Watts
The Minimum System Size is the number of watts per hour your system needs to produce during peak sun hours in order to meet your needs. You can use this number to figure out approximately how many solar panels you will need. Divide the Minimum System Size watts by the wattage of the solar panel you are looking at. For example, it would take 24 Kyocera 130 watt solar panels to produce 3000 watts..... 3000 divided by 130 = 23+ solar panels. NOTE: These figures are approximate and do not take into account variable efficiency ratings of solar panels and inverters. Please work with experienced Wholesale Solar staff to design a system which fits within your budget and will fills your energy needs.

System Sizing Based on Sun Hours

System Rating	1kW	2kW	3kW	4kW	5kW	6kW	7kW	8kW	10kW
6.5 Sun Hrs	150	300	450	600	750	900	1,050	1,200	1,500
6 Sun Hrs	140	280	420	560	700	840	980	1,120	1,400
5.5 Sun Hrs	130	260	390	520	650	780	910	1,040	1,300
5 Sun Hrs	120	240	360	480	600	720	840	960	1,200
4.5 Sun Hrs	105	210	315	420	525	630	735	840	1,050
4 Sun Hrs	95	190	285	380	475	570	665	760	950
3.5 Sun Hrs	80	160	240	320	400	480	560	640	800

SUN HOURS/DAY ZONE MAP

solar insolation 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 figures at the left indicate 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. We do have additional insolation data available for other parts of the world;
e-mail us the location of your solar project.

Grid-Tie Systems

Solar Sky Gridtie Systems
ON SALE

Enphase Energy Micro-Inverter Systems
ON SALE

SunWize Grid-tie Systems with Sanyo Solar Panels

Grid-Assisted Hybrid Systems

Monday to Friday 8am to 5pm PST

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

Call Wholesale Solar
to order:
1 (800) 472-1142

Wholesale Solar Shopping

Wholesale Solar requires customer registration to simplify the online shopping process. We do not store records of your credit card or other financial information.

Quick Links

Terms, Conditions and Shipping Policy
Customer support process
About our company

Need help? Call us: 1-800-472-1142

Dealer Login

Dealers, please log in here.

New Customer Registration

The following information will enable shopping cart features and allow Wholesale Solar to contact you about your order.

This information will also be used as your default billing information, and it can be changed when you order.

Unfortunately your browser does not have JavaScript capabilities and JavaScript is required for full functionality. This could be the result of two possible scenarios:

You are using an old web browser, in which case you can upgrade it to a newer version. We recommend the latest version of Firefox.
You have disabled JavaScript in your browser, in which case you will have to enable it to properly use our site. Learn how to enable JavaScript.

If you cannot enable Javascript on your computer, we will be happy to help you over the phone. Please call us at 1-800-472-1142. Back to Wholesale Solar home.

Title:
First:*
Last:*
Telephone:*
Address:*
City:*
State / Province:*
Zip Code:*
Country:
Email:*
Password:*

A confirmation will be e-mailed to you.