Evidence record · UDINUS · SDGs
UDINUS installed a grid-tied rooftop solar array on the main library building as a first step toward reducing the campus's reliance on grid electricity and its associated emissions.
The system, commissioned in March 2025, has an installed capacity of 48 kilowatt-peak across 108 panels mounted on the library roof. It is connected to the building's distribution board and feeds daytime loads directly, with an export arrangement agreed with the regional utility (PLN) for any surplus.
Over its first nine months of operation the array generated approximately 61 megawatt-hours, covering an estimated 34 percent of the library's daytime electricity consumption. Based on the national grid emission factor, this avoided roughly 49 tonnes of CO2-equivalent.
Generation data is logged by an inverter monitoring system and reviewed monthly by the general-affairs bureau. The installation also serves as a teaching resource for engineering students studying photovoltaic systems.
Supporting data
- SOLAR-CAPACITY — Installed rooftop solar capacity · 2025
- 48.0000 kWp
Attachments
Commissioning report for the library rooftop solar array, March 2025 (file)
ROOFTOP SOLAR COMMISSIONING REPORT — MAIN LIBRARY
Commissioning date: March 2025
Installed capacity: 48 kWp (108 panels)
Configuration: grid-tied, self-consumption with surplus export to PLN
First nine months generation: ~61 MWh
Share of library daytime consumption covered: ~34%
Estimated avoided emissions: ~49 tCO2e (national grid emission factor)
Monitoring: inverter logging system, reviewed monthly by General Affairs Bureau.