How to Make Your Solar PV System the Proper Size for Your Home
Due to the threat of climate
change and electricity prices that are ever-increasing, there’s never been a
better time to switch over to solar photovoltaic (PV) systems. PVs have become
more efficient and affordable with the advancement of technology—making them
even more appealing as a way to save money on energy bills.
Before you get caught up
into buying something you don’t actually need, you’ll want to do a bit of
research to find out how much electricity your household needs and how PV
alternatives hold up in your area.
Determine your Household’s Electricity
Get all your electricity
bills from the last year together in order to estimate your typical power usage
from each month. This calculation of the average electricity consumption of
your household is vital because of the peaks and valleys inherent in the micro
scale of things.
Total up all of the kWhs for
every month of the year and divide what you get by 12 to figure out your normal
monthly energy usage. Divide your monthly number by 30 to find out the kWh
usage on average each day.
To assess your household’s electricity needs ever more accurately, write down
each one of your appliances as well as the power usage each one consumes in
wattage. Don’t forget to mark whether it’s DC or AC power.
Write down the number of
hours each appliance was used per week. Multiply the hours/week by the watts to
calculate how much you use each appliance by the watt-hours per week. You could
also determine what the energy consumption was for specific appliances by
installing an electricity monitor. Letting the monitor measures of the
electricity for a week gives the watt-hours per week that we just calculated on
Put the numbers you’ve
gathered into a load sizing document. Go through the worksheet and enter in any
leftover calculations to find out the number of amp hours you appliances used
each day in total.
Find Out Insolation
You can get a solar
insolation table on the internet to find out the insolation. This is a calculation
of the normal number of hours the sun produces peak sunlight each day in your
region. Locate the city closest to you on the table and record the daily
To discover the specific
insolation information for specific days of the year, make use of NASA’s
Choosing the Best PV System
Calculate the amount of room
you have to install your solar panels and how they will need to be mounted.
Choose a budget that will work best for your solar system. Make sure the system
you choose meets power requirements, but will fit inside your space limitations.