<![CDATA[ABSTRAK Peningkatan suhu udara di Indonesia dan tingginya kontribusi sektor bangunan terhadap emisi CO? global mendorong urgensi penerapan bangunan hijau, yang penerapannya di Indonesia masih rendah. Penelitian ini mengevaluasi implementasi bangunan hijau pada Gedung FSTSO berdasarkan Greenship New Building versi 1.2 pada kategori Appropriate Site Development, Energy Efficiency & Conservation, dan Indoor Health & Comfort, serta merumuskan solusi desain peningkatan efisiensi energi. Metode penelitian menggabungkan pendekatan kualitatif (pendataan) dan kuantitatif (penilaian), melalui observasi lapangan, wawancara, dan analisis dokumen teknis. Hasil evaluasi menunjukkan kondisi eksisting masih memerlukan peningkatan pada sistem pencahayaan dan penghawaan. Tiga strategi intervensi diusulkan: Vertical Greenery System, rekonfigurasi ruang menjadi atrium dengan skylight, dan penerapan panel surya. Strategi ini menurunkan total konsumsi energi bangunan dari 2.497.687 kWh/tahun menjadi 2.142.569 kWh/tahun. Kata kunci: bangunan hijau, Greenship New Building 1.2, efisiensi energi ABSTRACT Rising air temperatures in Indonesia, along with the building sector's significant contribution to global CO? emissions, have driven the urgency of implementing green buildings, whose adoption in Indonesia remains low. This study evaluates the implementation of green building principles at the FSTSO (Facility Support Telkomsel Smart Office) Building based on the Greenship New Building version 1.2 standard, focusing on the categories of Appropriate Site Development, Energy Efficiency & Conservation, and Indoor Health & Comfort, and formulates design solutions to improve energy efficiency. The research method combines a qualitative approach (data collection) with a quantitative approach (assessment), through field observation, interviews, and technical document analysis. The evaluation results show that the existing conditions still require improvement in the lighting and ventilation systems. Three intervention strategies are proposed: a Vertical Greenery System, reconfiguring the space into an atrium with a skylight, and the application of solar panels. These strategies reduce total building energy consumption from 2,497,687 kWh/year to 2,142,569 kWh/year. Keywords: green building, Greenship New Building 1.2, energy efficiency]]>
