350-watt solar panels: Are they right for you?

350W solar panels are they right

One important metric to consider when comparing solar panel options is a panel's power rating, referred to as wattage. 350-watt (W) solar panels are close to the average wattage of solar panels available today and are an excellent panel option for many solar projects.

Most solar panels installed on homes or businesses today are between 250 to 365 watts per panel; solar panels above and below that range are also available. To determine if 350W solar panels are right for you, it is important to understand the options and how much energy 350W panels produce.

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Many manufacturers make 350W solar panels. Below is a list of 350W panels, each with their efficiency ratings and the company that produces them. Some manufacturers make more than one 350W panel model, but only one model per company is listed below.

List of 350-watt solar panels

Panel Manufacturer
Panel Model
Panel Efficiency
Canadian SolarCS6U-350P18
Hanwha Q CELLSQ.PLUS L-G4.2 35017.6
Itek EnergyIT-350SE17.54
Peimar GroupSG350M18
Peimar GroupSG350M(FB)18
Phono SolarPS350M-24/T18.04
REC SolarREC350TP2S 7217.4
Recom SolarRCM-350-6MA17.9
SilfabSLG-X-350 White18
SilfabSLG-X-350M Bifacial17.95
SolarWorldSunmodule SW350 XL Mono17.54

A single 350W solar panel is rated to produce 350 watts of power, but the actual power output you see from your panels depends on many factors, including geographic location, shading, and the tilt of your panels.

The number of solar panels you'll install depends on the electricity you want to generate and the space available for solar panels. The table below compares different-sized solar panel systems by the number of 350W solar panels needed for each system size. In some cases, the number of 350W panels is rounded to the nearest panel.

How many 350-watt solar panels do you need? System size comparison table

System Size (k W)
Average Annual K Wh Production
Number Of 350W Solar Panels (rounded)
2 kW2,8206
5 kW7,05014
6 kW8,46017
7 kW9,87020

The number of panels needed, rounded to the nearest panel, and assumes a production ratio of 1.41

Using six 350W solar panels will produce roughly 3,000 kilowatts hours (kWh) of electricity, significantly below how much electricity a standard single-family household uses. Installing 17 panels for a 6 kW system will produce enough electricity to offset or eliminate your electric bill.

How much space will a solar energy system using 350W panels take on your roof or property? The table below demonstrates estimates for solar energy systems using only 350W solar panels. To calculate the estimated space needed, we assumed that 350W solar panels are, on average, 16.5 square feet (5.5' by 3').

How much space will a solar installation with 350-watt solar panels take?

System Size (k W)
Number Of 350-watt Solar Panels
Estimated Space Needed (sq. Ft.)
2 kW699
5 kW14231
6 kW17281
7 kW20330

Number of panels rounded to the nearest panel, and space needed rounded to the nearest foot

350W solar panels are around standard when it comes to space efficiency on your roof, and a typical roof of a single-family home will likely have enough space for the number of panels needed to offset electricity costs. Consider a ground-mounted solar system if you have a small roof or a roof you don't want to be covered with solar panels.

350W solar panels are near the average wattage of panels used for solar installations and will make sense for many property owners. Whether you're looking for low, standard, or high-wattage panels, you can get multiple solar quotes from pre-screened installers by signing up on the EnergySage Marketplace. If you have preferences regarding solar equipment, you can note them in your account so installers can quote accordingly. If you'd prefer to start investigating your solar options with a quick estimate on what solar can save you, try our Solar Calculator.

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