Adrian, F. and Diswandi 2026. The Impact of Green Economy Initiatives at Universities on Student Expenditures: A Case Study of the Gridwiz E-Bike Program and Water Refill Station at Mataram University. Al-Kharaj: Journal of Islamic Economic and Business. 8, 2 (May 2026). DOI:https://doi.org/10.24256/kharaj.v8i2.9800.