For ecoligo , climate protection has been mission goal number one from the very beginning and still is today . They aim to actively bestow to the avoidance of CO2 emissions with , for instance , solar projection . In this article , ecoligo describes how they calculate their solar impact .
The reckoning of CO2 savings is based on several parameters . Once these have been determined for a solar installing , the actual calculations can follow .
Size of the solar system [ MWp ] : The size or electrical capacity of the solar system is individually adapted to the penury of each customer . The size of the solar organization is stipulate in megawatt peak ( MWp ) or kilowatt peak ( kWp ) . The “ tip ” here stands for the peak or maximal tycoon . The size of a solar system is calculated by multiplying the number of solar modules by the single mental ability of the solar module used . A potential feed - in of the solar energy into the power grid , as is possible in Vietnam or Chile , is also taken into news report in the size calculation for the solar scheme .
Solar utilization rate [ % ] : The solar utilization pace describes the proportion of the total solar electricity produced that is actually buy and run through . Since the feed - in of nimiety electricity is veto by law in some project countries , the employment charge per unit here may be lower than in countries where customers can bung the supernumerary electrical energy into the grid . On average , the usage charge per unit in our project commonwealth is 88 % .
Specific yearly energy yield [ MWh / MWp / a ] : This time value , which appear complicated at first glance , delineate the amount of vigor that a solar arrangement produces per installed MWp per yr . This yield can vary bet on the intensity of the solar radiation , the orientation of the solar organization , and its age . To calculate the CO2 saving of a works , we use the specific one-year zip amount calculate in the system report before the plant is built .
life-time of the solar system [ a ] : We feign a duration of 25 year for all our solar system . Originally , we had set a full term of only 20 years . However , experiences with solar systems from all over the mankind show that the lifetime is at least 25 class . consequently , we have adjusted our calculation but intend to stay conservative and not go beyond the minimum condition of 25 years . This terminus is always sovereign of our contract term with customer .
pace of solar system of rules wear [ % ] : The contrition rate describes the percentage personnel casualty of powerfulness genesis capability that a solar system is dependent to per year . For our computing , we acquire an attrition charge per unit of 0.6 % per year , which entail that the output of the solar system decreases by about 0.6 % per class over its total lifetime . This rate , which is base on the maximum yearly wear rate guarantee by the manufacturers of the solar modules used , allow us to make our deliberation as realistic and at the same time conservative as potential .
CO2 emanation factor[t CO2 / MWh ] : The CO2 discharge factor describes how much CO2 was create in the generation of one megawatt - hour of electricity from the freely useable ability grid . This cistron variegate from res publica to country and is influence by the commonwealth ’s electricity mix . The larger the parcel of grid electrical energy from renewable sources , the lower the factor . As an example , Germany ’s CO2 emission constituent in 2020 was 0.366 thyroxin CO2 / MWh , while Vietnam ’s was 0.599 .
Once all of these six service line parametric quantity have been determine for a solar project , the CO2 saving of the solar facility can be calculated , as well as the CO2 saving achieved relative to a determined amount of investment in the labor .
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