Aptos Solar DNA-144-BF26-400W BIFACIAL

Solar Panel Performance

Rated Power 400W

Aptos Solar Technology also offers solar panels for utility, and commercial sized projects. However, we are going to focus on the Aptos Solar 400W Solar Panel 144 cell DNA-144-BF26-400W BIFACIAL as used in Texas residential applications.

Efficiency 19.88%

The Aptos Technology DNA-144-BF Solar module’s efficiency ratings range between 19.38% and 19.88%, ranking them on the higher end of average solar panel efficiency. This achievement occurs via implementation of their patented DNA cell technology. Aptos uses thinner bus bars, taking less space from the actual solar cells. This results in a rate of failure at less than 0.01%.

Power Tolerance 0/+3W

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.

Aptos Solar panels have a power tolerance of -0/+3%. This means Aptos panels will, at a minimum, operate at their rated capacity. However, these panels have exceeded their rated capacity by as much as 3%. For example, an Aptos Solar panel rated at 400 W will have an operational output ranging from 400 W to 412 W (or 3% higher than 400) under STC.

With a -0% tolerance rating, the AptosDNA-144-BF26-400W (BoB) panel operates at or above 400 W. These performance scores, coupled with Aptos’ stringent, 3x manufacturing standards, will result in continued real world performance under Texas' most extreme operating conditions.

Temperature Coefficient PMax: -0.40%

Solar panels perform best at 77°F (25°C). Here in Texas, obviously, we see temperatures that 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 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 coefficient.

Using the above methodology, the AptosDNA-144-BF26-400W (BoB) panel has a temperature coefficient of -0.4%/°C. Hence, when this panel’s temperature increases by one degree, from 25°C to 26°C (77° F to 79° F), except a 0.4% reduction in potential electric output.

When it's July in Texas and temperatures have climbed to 95° F/35° C, expect electric output to decrease by 4.0%. When the hottest hours of the summer drives the mercury into the triple digits, say 113° F/ 45° C, the AptosDNA-144-BF26-400W (BoB) will decrease approximately 8.0%.