Know your energy consumption, we do the rest!
Use our energy calculator to document your current energy consumption. Try and do this as completely as possible as this is crucial to system design.
Once completed send it to Exon Consulting and we will contact you to discuss your system sizing, possible system options and ways to save energy rather than to oversize your solar solution. This way we start saving you money before we even started with your solar project!
How to use the energy calculator:
Step 1: Download our calculator.
Step 2: List all the appliances you want to be Solar Powered (e.g. TV, Fridge, Lights, etc..).
Step 3: For each appliance listed, determine how many there are of that appliance (Quantity).
Step 4: For each appliance, determine it’s power needs in Watts (W). TIP: It is often written on the appliance, have a good look.
Step 5: For each appliance, determine how long (Hours per Day) it is required to be ON in total.
Step 6: Let the spreadsheet calculate each appliances Total kWh and Spreadsheet Totals.
Step 7: Email your solar energy calculation back to us and we will do the rest. Send To: firstname.lastname@example.org or email@example.com
or Select a system using our 3-Step process (Tip: match your kWh’s to the system kwh’s).
- Please fill in info that reflects what loads (fridges, lights, TVs, etc) get used on an actual day that needs to be solar powered.
- Only fill in the appliances that get used in your home on a typical day (on average). So think of your typical day!
- If this typical day changes significantly on say a weekend; please make a Note for us and tell us what/how it differs.
- Do Not, go list ALL the appliances (e.g. Lights) in your home, unless they get used (ON) each typical day!!
Example: Bathroom lights usually do not get used for more than a few minutes per day.
Create your own calculation by following these instructions:
The QTY is the number of appliances connected.
The WATTS is the power rating of the appliance (see user manual or back of appliance to find the power rating in Watts).
The HOURS is the duration in hours the appliance is to be powered per day or during a power outage.
The WATTS/HOURS is the calculation of: QTY x WATTS x HOURS = WATTS/HOURS.
Notes: WATTS/HOURS is used to size the battery bank and the solar panel array.
The WATTS (peak) is the calculation of: QTY x WATTS = WATTS (peak)
Notes: WATTS (peak) is used to size rating/size of the inverter.
Central Air Conditioner NA
Electric Clothes Dryer NA
|Well Pump (1/3-1 HP)|
|9” disc sander|
|3” belt sander|
|25” color TV|
|12” chain saw|
19” color TV
|14” band saw|
12” black and white TV
|7-1/4” circular saw|
|8-1/4” circular saw|
Radiotelephone – Receive
|20 cu. ft. (AC)|
|Room Air Conditioner NA|
Radiotelephone – Transmit
|16 cu. ft. (AC)|
1200 watt-hours /day*
100 watt incandescent bulb
|15 cu. ft. (Upright)|
1240 watt-hours /day*
|Sink Waste Disposal|
25 watt compact fluor. bulb
|15 cu. ft. (Chest)|
1080 watt-hours /day*
50 watt DC incandescent
|Cell Phone – recharge|
|40 watt DC halogen|
|MP3 Player – recharge||.25-.40 watts|
|20 watt DC compact fluor.|
* TV’s,VCR’s and other devices left plugged in, but not turned on, still draw power.
**To estimate the number of hours that a refrigerator actually operates at its maximum wattage, divide the total time the refrigerator is plugged in by three. Refrigerators, although turned “on” all the time, actually cycle on and off as needed to maintain interior temperatures.
CFL Bulb (60-watt equivalent)
Video Game Player
CFL Bulb (40-watt equivalent)
|CFL Bulb (75-watt equivalent)|
|CFL Bulb (100-watt equivalent)|
Desktop Computer (Standard home/business)
|Desktop Computer (Gaming)||400-1000+|
Engine Block Heater NA
Portable Heater NA
|Waterbed Heater NA|
|Stock Tank Heater NA|
|Clothes Dryer – Gas Heated|
|Well Pump (1/3-1HP)|
* The daily energy values listed here are for the most efficient units in their class and the information was obtained from Consumer Guide to Home and the General Electric website.