Silfab SIL-370 HC Black 

PV Product Performance

Power Rating 370W

The SIL-370 HC Black module has a power max output of 370 W. In independent third-party testing, all models test at or above their reported electrical output.

Efficiency 20.2%

The Silfab Prime SIL-370 HC module’s efficiency rating is 20.2% - quite high compared to average solar panel efficiency. Silfab’s achievement is largely thanks to the 120, Half cells-Si mono 9 bus bar and superior hydrolysis, UV resistance, multi-layer dielectric film, fluorine-free back sheet.

Power Tolerance 0 / +10 watts

Power tolerance refers to the amount of electricity a panel will produce either above or below its rated power capacity at Standard Test Conditions (STC). The smaller the power tolerance deviation or range, the more accurate the rated power capacity is.

Silfab Solar modules have a power tolerance of 0 to +10W. This means Silfab Solar panels will, at the very minimum, be operating at their rated capacity, These panels, however, have exceeded their rated capacity by as much as 10 Ws. For example, a Silfab Solar panel rated at 370 W will be able to operate anywhere from 370 W to 380 W (or +10W higher than originally rated 370) under STC.

With a -0% tolerance rating, the Silfab Prime SIL-370 HC panel operates at, or above 370 W. These performance scores, coupled with Silfab Solar’s extremely low rate of material defect, equate to real life performance even in Texas' most demanding operating conditions.

Temperature Coefficient PMax - 0.36 Voc: -0.28

Solar panels perform best at 77°F(25°C). Obviously, Texas temperatures will far exceed 77°F for long portions of the year. A solar panel’s temperature coefficient is a measurement indicating how well a specific model of solar panel will perform outside of ideal operating conditions. Knowing a panel’s temperature coefficient and the temperature of the panel will allow you to predict your panel’s performance during the dog days of summer.

Temperature coefficients are calculated in Celsius. With each degree above 25°C(77°F) a given solar panel’s electric output will be diminished by its temperature coefficients.

Using the above methodology, the Silfab Prime SIL-370 HC panel has a temperature coefficient of -0.36%/°C. When this panel’s temperature increases by one degree, from 25°C to 26°C (77° F to 79° F), expect a 0.36% reduction in potential electric output.

When it's August in Texas and temperatures have climbed to 95° F/35° C expect electric output to decrease by 2.8%. When the hottest hours of the summer drive the mercury into the triple digits, say 113° F/ 45° C, the Silfab Prime SIL-370 HC will decrease approximately 7.2%.