Indian researchers in contrast the efficiency of an agrivoltaic system with monofacial and bifacial rooftop PV techniques, and located that the setup of agrivoltaics has a shorter payback time and a decrease stage of vitality prices. Their efficiency evaluation thought-about panel temperature, energy output, floor equal ratio, and reliability.
A gaggle of scientists on the SRM Institute of Science and Technology in India in contrast the efficiency of small agrivoltaic techniques with monofacial and bifacial rooftop PV techniques, and located that agrivoltaic services have decrease vitality prices ( LCOE) and shorter payback interval.
“Our findings apply to all places and markets,” corresponding creator of the analysis, Manikandan Sundararaj, “mentioned. pv journal. “However, the land equal ratio (LER) depends upon the native local weather circumstances and the kind of plant grown beneath the agrivoltaic panels. If the suitable yield is optimized primarily based on the situation and native weather conditions, unquestionably, agrivoltaics will be very helpful.
The experimental setup consists of a 195 W bifacial PV panel and a 200 W monofacial photo voltaic modules, each mounted on a rooftop at a top of 1 m, with a pitch of two m between them and an albedo which is 17.013%. It additionally features a 4.3 kW agrivoltaic system put in at a top of 4 m above the bottom and primarily based on monofacial panels.
“All the panels are oriented to the south with a slope equal to the angle of latitude,” the researchers specified. “An Arduino-based information logger is used to measure the present and voltage outputs.”
In its evaluation, the group thought-about panel temperature, energy output, LER, levelized value of electrical energy (LCOE), payback interval, and reliability. It discovered that agrivoltaic techniques have 12.7% larger energy output and 4.4% larger vitality effectivity in comparison with rooftop counterparts. This is as a result of microclimate beneath the agrivoltaics system, which reduces the working temperature of the panels to between 6 C and eight C.
The lecturers additionally discovered that the agrivoltaic array has an LER of 1.85. “LER is an accurate indicator to check agrivoltaic and traditional PV techniques,” says Sundarajai. “If the LER of the agrivoltaic system is larger than 1, the agrivoltaic system shall be extra environment friendly, as a result of the agrivoltaic system offers the agricultural harvest along with the vitality harvest from the identical land space.”
The evaluation additionally reveals that the agrivoltaic system has an LCOE of $0.039/kWh and a 6-year payback time, which compares to $0.046/kWh and a 7.56-year payback time for the standard bifacial system and $0.048/kWh and a 7.25-year payback time. time for the standard monofacial system.
“Mean Time Between Failure (MTBF) outcomes present that agrivoltaic techniques are very dependable, with an MTBF of 40.21 years in comparison with 32.31 and 31.81 years for monofacial panel and bifacial techniques, respectively,” the scientists said, saying that this worth describes the common time between the breakdown of the system.
“The integration of vegetation beneath the PV system not solely improves vitality manufacturing but additionally contributes to the advance of the general reliability of the agrivoltaic system, positioning it as a compelling and economically advantageous answer for within the water-food-energy downside,” they concluded. .
Their findings are within the examine”Agrophotovoltaics: enhancing photo voltaic land use effectivity for vitality meals water nexus,” printed in Focus on Renewable Energy.
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