PV array elongation is a tried and tested method of producing the best results when it comes to commercial and residential implementations of Solar Panels.
PV panels are usually coupled with solar inverters. They store the excess power that is being generated at the helm of the source. Most often the wattage of the inverter does not match the wattage of the solar panels.
Get the best out of your money
Getting the most bang for your buck is the attitude that is required in order to properly utilize an asset like solar panels. For example, if a 270W solar panel is attached to a 250W solar inverter. There is an excess of 20W of solar juice that is being wasted
In the best interests of the consumer, one might think that PV wattage shouldn’t exceed the inverter the wattage; but that is exactly the case. PV panels wattage should exceed the wattage of the solar panels.
The truth is, PV panels, are not the efficient specimens the are made out to be. The monocrystalline PV panel, the most efficient, widely used and recommended, PV panel has an efficiency of max 20%. This efficiency is the in upper quartile and tends to decrease slightly as time goes by.
Other factors like air pollutants, shade from covers and solar irradiance of the area affect the utilization of the asset. Solar irradiance follows a curve and is at its peak when it approaches noon and the lowest dip is seen during the evenings when it’s not producing any energy or during the off-peak hours.
The rating of the wattage doesn’t reflect the true rating of the specimen. It is tested indoors in controlled conditions of direct light and at sustained temperatures. Real-world testing contains changing variables and to keep that into account a ballpark estimate of 10% is considered.
“Sun Hours”, as they are denoted, is the maximum amount of time, during which the solar irradiance matches 1,000 watts per square meter. This is the exact rating at which the solar panels are standard tested.
KSA gets an average of 5-6 sun hours per day. During this period, maximum meaningful production occurs on the solar panels. If an inverter of 270W rating gets an input of 290 W solar irradiance, the 20W of usage will be clipped. The clipped energy is approximately equal to ost energy during non-sun hours.
The whole point of this exercise is to keep the fact in mind that solar panels do not output the standard wattage they advertise to be. They are affected by a plethora of variables that are not accounted for in controlled testing.
KSA is a hot land and any typical PV panel array should exceed at least 30% of the wattage that inverter it is coupled with.
Having the most optimized system for the solar panel system will get the most ROI. Ethraa recommends getting a 320 W Solar panel with a 270 W inverter. Larger systems like 7.6KW inverters can be attached to a solar panel with inverter ratings varying in the range of 8360W-9120W.
KSA needs smart investment when it comes to changing a fossil-fuel driven economy. Utilizing and streamlining your renewable investment will go a long way in decreasing fiscal deficits. These things need to and should be done using government encouragement; in the form of incentives and rebates on solar equipment.
Together we can work and make KSA’s Vision 2030 a booming reality and a role-model state for the world to see and admire. Ethraa is on track to help the state achieve its sustainability goals.