Warning: file_get_contents(https://ojs.journalbusiness.my/ojs.php): failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found in /var/www/ojs.unud.ac.id_backup/lib/pkp/includes/functions.inc.php on line 4 Widi Astawa, I., Dwi Giriantari, I., & Sukerayasa, I. (2022). STUDI EKONOMIS PENGGUNAAN PLTS ROOFTOP 3 KWP FRAMELESS WITH ON-GRID SYSTEM PADA PELANGGAN R/4400 VA. Jurnal SPEKTRUM, 8(4), 73-83. doi:10.24843/SPEKTRUM.2021.v08.i04.p9