ANALISIS PERENCANAAN GREEN BUILDING PADA BANGUNAN PERKANTORAN 2 LANTAI BERDASARKAN KARAKTERISTIK HIDROKLIMATOLOGI KELURAHAN GUNUNG PANGILUN KOTA PADANG
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Penerapan konsep green building pada bangunan perkantoran di kawasan beriklim tropis basah merupakan langkah strategis dalam menekan konsumsi energi fosil serta mengoptimalkan konservasi air bersih. Penelitian ini bertujuan untuk merencanakan dan menganalisis efisiensi energi, potensi pemanenan air hujan (rainwater harvesting), serta dekarbonisasi pada bangunan perkantoran 2 lantai dengan luas total 3.000 m² yang berlokasi di Kelurahan Gunung Pangilun, Kota Padang. Metode analisis mengacu pada standar SNI (SNI 03-6397-2000, SNI 03-7065-2005) dan kriteria penilaian Greenship GBCI. Berdasarkan data BMKG, wilayah Gunung Pangilun memiliki curah hujan rata-rata sebesar 3.900 mm/tahun. Dengan kapasitas hunian 300 orang (10 m²/orang, penerapan efisiensi energi pasif dan aktif mampu menghemat energi sebesar 30%, sementara pemasangan Sistem Pembangkit Listrik Tenaga Surya (PLTS) Atap berkapasitas 75 kWp menyuplai 101.250 kWh/tahun. Secara keseluruhan, konsumsi listrik dari jaringan PLN berhasil ditekan hingga 48.75%, dan emisi karbon berkurang sebanyak 223,76 ton CO₂/tahun. Di samping itu, potensi pemanenan air hujan dari atap seluas 1.500 m² mencapai 4.972,5 m³/tahun, yang sepenuhnya memenuhi seluruh kebutuhan air operasional gedung sebesar 2.812,5 m³/tahun (setelah penghematan 25% via saniter hemat air).
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Referensi
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