Darwison, D. et al. 2026. Pemanfaatan PLTS Off-Grid untuk Meningkatkan Efisiensi Pengolahan Kopi di Nagari Lasi Kabupaten Agam: Utilizing an Off-Grid Solar Power System to Enhance Coffee Processing Efficiency in Nagari Lasi, Agam Regency. Jurnal Hilirisasi IPTEKS. 9, 2 (Jun. 2026), 97–111. DOI:https://doi.org/10.25077/jhi.v9i2.917.