What Size Solar Energy System Do I Need?

The first question most customers ask is “What size solar energy system do I need?”. The answer is: It depends on how much electricity you use. Two homes the exact same size will use different amounts of electricity and therefore require different size systems. Major electrical loads within a home are air conditioners, electric heaters, pools, and other heating elements or motors.

That being said, an average 2,500 sq. ft. single-family home uses about 5,000 kilowatt-hours of electricity per year. A 3 kilowatt (AC) system will generate nearly all the electricity required for such a home on an annual basis. Sometimes a PV system can be installed that is slightly over-sized to allow for the possibility of a growing family or other factors that may play a part. When a system overproduces electricity, the unused portion is fed back into the grid and will actually be credited back to your utility account in a program called net-metering.

What size solar energy system


The actual amount of electricity produced is dependent on how much solar energy reaches your site. An optimally located array would face south and have nothing obstructing the sun’s rays from reaching the solar panels, such as trees or other structures that produce shading.

Think too about your energy goals: are you interested in completely eliminating your monthly electric bill (minus standard utility connection fees) or just make a dent in the bill?  System size will then vary on how much electricity you intend to produce.

Businesses are also very unique in their energy needs so everything must be factored in to calculate the size of system needed.

Actual system production can easily be calculated by a Solar Specialist with a site analysis, or we’d be happy to provide you with a free quote over the phone: 954-236-4599

Florida Solar One Thanks our solar customers for making us one of the most recognized solar companies in Florida and the US.

Florida Solar One Awards

  • In 2013, 2014, 2015 and 2016 Florida Solar One ranked the #1 South Florida solar company by Solar Reviews.
  • In 2015 Solar Power World selected Florida Solar One for their advisory board in addition to placing FS1 into the list of Top 500 Solar Installation Companies in the US.
  • BBB rewarded Florida Solar One with an A+ rating for customer satisfaction since 2012.
  • Also, in 2015 Inc Magazine ranked Florida Solar One the #1 fastest growing energy company in Florida from 2012 to 2015.

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