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    Home»Solar»New study shows lower environmental impact with single-axis trackers – pv magazine International
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    New study shows lower environmental impact with single-axis trackers – pv magazine International

    cindy kBy cindy kFebruary 8, 2023Updated:June 21, 2025No Comments3 Mins Read
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    Brazilian researchers in contrast the environmental impression of two PV crops – one with polycrystalline photo voltaic modules mounted on a fixed-tilt tracker, and the opposite with the identical modules mounted on a single-axis tracker. The life cycle evaluation confirmed that the system with single-axis trackers lowered carbon fuel emissions by 24%, land use by 20%, and water use by 7%.

    February 8, 2023 Beatriz Santos

    From pv journal Brasil

    Scientists from the Federal College of Rio de Janeiro and the Brazilian Middle for Electrical Power Analysis (Cepel) analyzed the environmental impression of PV crops with single-axis tracker and stuck tilt tracker, utilizing methods of northeastern Brazil as a case examine.

    The staff evaluated two PV methods. The primary (S1) has polycrystalline modules mounted on a single-axis tracker, with a complete capability of 1,033.25 kW. The second (S2) consists of polycrystalline modules mounted on fixed-tilt trackers, with a capability of 52.20 kW. The modules for the methods are from Malaysia. The examine assumes that the trackers, inverters, and transformers are manufactured in Brazil.

    The researchers used the life cycle evaluation (LCA) approach to research the environmental impression. The staff centered on three classes of LCA: world warming, land use, and water consumption.

    The LCA for methods S1 and S2 covers the manufacturing, distribution, building, operation and upkeep (O&M), and decommissioning phases. It doesn’t embrace grid connection, energy transmission, and consumption phases.

    The researchers obtained the figures of inputs and outputs from the worldwide Ecoinvent database and processed them utilizing SimaPro 9.0 software program. LCA reveals the environmental efficiency of manufacturing methods for 1 kWh of electrical energy.

    “To quantify the distinction between the environmental performances of the 2 PV methods for the era of 1 kWh, we first calculated the distinction between their efficiency in relation to every of the three classes in share phrases ,” the researchers defined. “We averaged these outcomes and located that the environmental impression related to 1 kWh of era in S2 (with a set tracker) is roughly 17% greater on common than in S1 (which has a single-axis tracker).”

    Particularly, the impression of system S1 is 24% below the worldwide warming class, 20% below land use, and seven% below water use. The S1 system emits the equal of a complete of 44.64 g of carbon dioxide per kWh, with the manufacturing section accounting for 95% of emissions. Module manufacturing accounts for greater than 70% of emissions, trackers for 17%, and electrical motors for less than 0.04%.

    The researchers concluded that using PV methods with single-axis trackers ought to be prioritized in Brazil, regardless of their greater prices,” the scientists mentioned. “The deployment of this dearer know-how “may be supported by public coverage … via financial incentives.”

    The researchers revealed their findings in “Environmental lifecycle-based evaluation of fastened and single-axis monitoring methods for photovoltaic energy crops: A case examine in Brazil,” in Cleaner Engineering and Expertise.

    This content material is protected by copyright and is probably not reused. If you wish to cooperate with us and wish to reuse a few of our content material, please contact: [email protected].

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