DESIGN OF A BUILDING INTEGRATED PHOTOVOLTAICS (BIPV) ON GREEN BUILDING ROOFING SYSTEM

• Main Author: Hana Emeralda, Stevanie
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/74086
• Institution: Institut Teknologi Bandung

BIPV, or Building Integrated Photovoltaics, is the installation of solar panels integrated with building components such as roofs, facades, balconies, and others. The Bencingah Building in Besakih, Bali, Indonesia, follows the principles of Green Building. The installation of BIPV on the roofing system of the Bencingah Building supports the Green Building principles related to energy efficiency. BIPV installation was simulated using PVsyst and SketchUp software to illustrate the integration of PV modules on the roofing system. With an On-Grid system, the output energy from the system is used to supply the load of the Bencingah Building during its operational hours. The excess power generated during non-operational hours will be sold to the Grid according to the applicable tariff. Three design alternatives were offered: the BIPV system using CIGS solar shingles, thin-film Cd- Te solar technology modules, and Silicon Monocrystalline (Si-Mo) modules. Various criteria were reviewed to determine the design solution, such as system performance, environmental impact, energy efficiency, mechanical aspects, material availability, and aesthetics. With the calculated weighting, the selected design solution is the BIPV system with Silicon Monocrystalline solar module technology. The designed BIPV system has a capacity of 616 kWp using 1120 monocrystalline solar modules with a rating of 550 Wp and 12 inverters of 40 kW. The energy production in the first year is estimated to be 848.31 MWh with a system performance ratio of 79% and carbon emission reduction over the project's 25-year lifespan amounting to 13.379,8 tCO2. Based on economic analysis, the LCOE of the system is calculated to be Rp867.53/kWh, with an IRR of 16.27% and a positive NPV of Rp4,930,077,664 and a payback period of 6.86 years, indicating the economic feasibility of the BIPV project.