S-Power improves reduced output and power output of degraded and underdeveloped solar power plants through its renovation projects.

Starting with four Woori Blue Solar Power Plants built in 2012, the renovation project entered into full swing in 2014. After the renovation, the average annual PR of the Woori Blue Solar Power Plants increased by 13%, and our self-developed tracker was installed at S-Plant #4; thus increasing the PR by 32% and remodeling the place as a power plant capable of producing high output.

Renovation of Woori Blue Solar Power Plants

  • Before action

    As existing power plants were affected by yellowed modules,
    we took action due to concerns over long-term loss of output.

  • After action

    Replacement of our modules and maintenance work
    were carried out.

Region Goheung-gun, Jeollanam-do (4 locations)
Capacity 1,853.9kw
Construction period August 1 - 30, 2012 (All)
Power plant acquisition Sep. 1, 2012
Module replacement SM-235PC9(1,026ea) / SM-240PC9(6720ea)

Renovation of S-Plant #4

  • Before action

    Due to decreased module output at the existing plant,
    action was taken.

  • After action

    Implemented renovation work
    with our own modules and trackers

Region Sayul-ri, Namwon-si, Jeollabuk-do
Capacity 985.76kw
Construction period November 12 - December 31, 2014 (All)
Power plant acquisition Sep. 22, 2014
Module replacement SM-305PG8 (3,232ea)

Renovation of Dabok Solar Power

  • Before action

    Since output was reduced due to an issue with the plant tracker,
    action was taken.

  • After action

    Replacement of tracker system
    and connector board

Region Jaesan-myeon, Bonghwa-gun, Gyeongsangbuk-do
Capacity 995.5kw
Construction period February 15 - March 15, 2017
Power plant acquisition Dec. 23, 2016
Replacement parts Tracker Controller
Target Before improvement After improvement
Fire in connector boards
Estimated cause A fire is estimated to have been started in the connector board due to damage caused to cable connector or blocking die
Actions Installation completed after the production of new connector boards (took 2 days to handle)
Module diagnosis
Estimated cause Double-checked with IR camera and EL camera to diagnose defective modules. It is similar to the PID phenomenon caused by dark cells, leading to output loss.
Actions Restored output by installing PID recovery and anti-PID box (kit)
Replaced aged equipment
(inverter and transformer)
Estimated cause In the case of aged inverters, it was impossible to repair failures as service responses and parts supply were unavailable.
Actions Replaced distribution devices and inverters (ACB panel and transformer)
Estimated cause The installation of thin-film solar cell modules reduced energy output, and the plant had been left unattended due to the closure of the manufacturer.
Actions Remodeling to polycrystalline solar cell module was carried out by applying the tracker system, resulting in a 32% increase in PR