How Much Energy Will 50 Solar Panels Produce?

50 solar panels may not be much by commercial standards. However, this amount of PV panels makes for quite a large solar system size by residential standards.

This tends to apply no matter where you stay, especially those of you living in areas with above average amounts of solar irradiation. We’re talking to you Californians!

Nevertheless, if you’re contemplating whether a photovoltaic system consisting of 50 solar panels will be enough to meet your energy needs, then keep reading.

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How Much Energy Will 50 Solar Panels Produce?

solar panels on a house

The energy production of a solar panel depends on 3 primary factors:

  • Location
  • Power rating
  • Solar panel type


The location of your 50 solar panels is perhaps one of the most critical factors that determine energy output potential.

You see, each regional location has varying climatic conditions. The equator is the main driving factor here as it receives more sunlight than the poles.

The more solar irradiation an area receives, the more energy per square meter (roughly 10.5 feet) can be converted into electricity by a solar panel.

In short, solar panels located in sunnier areas produce more electricity.

Power Rating

Not all solar panels are made equal. They are classed based on their nameplate capacity (official power production rating given to the equipment).

You could, for example, buy a 50-watt, 100-watt, 200-watt, 400-watt, or 500-watt solar panel if you wanted. The rule of thumb here being the higher the wattage rating, the more power output potential.

This means 50 solar panels, each rated at 500 watts, will produce much more electricity than 50 solar panels rated at 100 watts.

Solar Panel Type

Different solar panels have varying levels of energy production.

There are three main types of solar panel technologies available to mainstream consumers: polycrystalline, monocrystalline, and thin-film.

Each type of technology has varying levels of efficiency — not all of them convert sunlight into electricity at the same efficiency level.

  • Polycrystalline: 13 – 16%
  • Monocrystalline: 18 – 24%
  • Thin-Film: 13 – 19%

Based on the above stats, it’s easy to see how 50 monocrystalline solar panels will produce more electricity than 50 polycrystalline solar panels.

So, How Much Energy Can 50 Solar Panels Produce?

The points mentioned above are the main driving factors for energy production. However, other considerations include system losses, tilt angle, and azimuth degree.

For simplicity’s sake, we won’t go into too much detail on those additional considerations. However, we’ll include them in our calculations as we need them to establish how much energy 50 solar panels can produce.

For this example, we’ll assume the following:

  • Location: California
  • Power rating: 400 watts
  • Solar panel type: Monocrystalline
  • System losses: 14.08%
  • Tilt (deg): 20
  • Azimuth (deg): 180
  • Number of panels: 50

50 solar panels rated at 400 watts each would produce 31,787 kWh per year.

See the below table for a monthly breakdown:  

MonthSolar Radiation (kWh / m2 / day)AC Energy (kWh)

For comparison, our second example will assume the following:

  • Location: Sydney, Australia
  • Power rating: 200
  • Solar panel type: Monocrystalline
  • System losses: 14.08%
  • Tilt (deg): 20
  • Azimuth (deg): 180
  • Number of panels: 50

50 solar panels rated at 200 watts each would produce between 14,985 kWh per year.

See the below table for a monthly breakdown:

MonthSolar Radiation (kWh / m2 / day)AC Energy (kWh)

Lastly, we want to add a city known for getting less solar irradiation:

  • Location: London, U.K.
  • Power rating: 400
  • Solar panel type: Monocrystalline
  • System losses: 14.08%
  • Tilt (deg): 20
  • Azimuth (deg): 180
  • Number of panels: 50

50 solar panels rated at 400 watts each would produce between 18,208 kWh per year.

See the below table for a monthly breakdown:

MonthSolar Radiation (kWh / m2 / day)AC Energy (kWh)

As you can see, we used the exact same input for both London and California, the location being the only difference.

As a result, 50 solar panels in London produce 13,579 kWh less per year than 50 solar panels in California. Now you can truly appreciate the importance of location.

If you’d like to learn the energy production potential of your area, feel free to use our solar calculator.

How Much Power Will 50 Solar Panels Have?

This depends on the nameplate rating you decide to go with:

Number of panelsNameplate ratingTotal power capacity
50 solar panels 50 watt2.5 kW
50 solar panels 100 watt5 kW
50 solar panels 200 watt10 kW
50 solar panels 300 watt15 kW
50 solar panels 400 watt20 kW
50 solar panels 500 watt25 kW
50 solar panels 600 watt30 kW
(Number of panels * Nameplate rating) = Total power capacity

How Much Space Do You Need For 50 Solar Panels?

The higher the nameplate rating, the larger the panel size. Below we’ve created a table for you to figure out the different space requirements based on the nameplate rating of the solar panel.

Nameplate RatingSizeTotal Space Required For 50 panels
50 watts2.2 ft. x 1.4 ft.154 ft2
100 watts3.9 ft. x 1.7 ft.331 ft2
200 watts4.8 ft. x 2.2 ft.528 ft2
400 watts6.5 ft. x 3.2 ft.1040 ft2
500 watts7.5 ft. x 3.7 ft.1387 ft2
600 watts8 ft. x 3.7 ft. 1480 ft2
(ft2 * number of panels) = Total ft2

How Much Will 50 Solar Panels Cost?

You can establish the total cost by calculating the cost per watt ($/W). Once again, location means everything here, as different countries tend to have various solar incentives, which can significantly impact the overall cost of your solar system.

  • United States: $2.94 per watt
  • United Kingdom: £1.6 per watt
  • Australia: $1.40 AUD per watt

The above prices are rough averages and do not consider various local solar incentives.

With this in mind, the total cost will also depend on the nameplate rating of your solar system.

CountryNameplate RatingTotal WattageTotal Cost
United States200 watts10,000 watts$29,400
400 watts20,000 watts$58,800
600 watts30,000 watts$88,200
United Kingdom200 watts10,000 watts£16,000
400 watts20,000 watts£32,000
600 watts30,000 watts£48,000
Australia200 watts10,000 watts$14,000 AUS
400 watts20,000 watts$28,000 AUS
600 watts30,000 watts$42,000 AUS

Final Thoughts

We hope we answered most of your questions, at least the important ones with this article.

If you have any more questions, feel free to reach out to us in the comments section below! Alternatively, you can visit our forum and share your opinions with us!

Kyle Browning
Kyle Browning

Kyle is a researcher and content specialist at Climatebiz. He has a strong interest in green technology, particularly in photovoltaic systems. Kyle believes in a future where everyone has affordable access to renewable energy, regardless of their race, religion, or social status. This ideology led Kyle to found Climatebiz - with the goal to provide free information for anyone, anytime. You can follow Kyle on Twitter at @kylebrwng