DO IT YOURSELF (DIY) LOADSHEET..
A solar PV design engineer needs a Loadsheet to design a solar photovoltaic system that meets the need and requirement for that client or building.
The Loadsheet gives the kWh (kilo watt hour) need and the kWp (kilo watt peak) to calculate how many solar panels, batteries and max. power of the inverter.
Your Load Sheet (explantion):
The load sheet is simply a list of devices that are connected to the solar system and the specifications around each appliance. From this loadsheet we can see if the (kW hours per day) and the (kW peak) fits the System Specifications.
Download Load Sheet Template (.XLS format):
How to Fill in the Loadsheet:
Step 1: Download our Loadsheet or create your own loadsheet (see instructions below..).
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 Loadsheet back to us and we will do the rest. Send To: rens@amsolar.co.za or info@amsolar.co.za
or Select a system using our 3-Step process (Tip: match your kWh's to the system kwh's).
Notes:
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Please fill in info that reflects what loads (fridges, lights, TVs, etc) get used on an actual day that needs to be solar powered.
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Only fill in the appliances that get used in your home on a typical day (on average). So think of your typical day!
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If this typical day changes significantly on say a weekend; please make a Note for us and tell us what/how it differs.
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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 you own Loadsheet:
Create your own loadsheet 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.
Example Load Sheet:
APPLIANCE QTY WATTS HOURS WATTS/HOURS WATTS (peak)
Lights (LED) 30 5W 4 600 150
Lamps (CFL) 12 11W 4 528 132
Fridge/Freezer/Combo 2 190W 3 1140 380
TV (LED) + DSTV 1 220W 4 880 220
Kettle 1 1500W 0.1 150 1500
Laptops 2 70W 4 560 140
Garage Door 1 50W 0.1 5 50
Elec Fence 1 45W 4 180 45
TOTALS: 4.05kWh 2.6kW
Batteries & Inverter
PV array size size
Download Load Sheet Template (.XLS format):
Follow our 3-STEP process
to select your ideal Residential
Solar Power Solution...
