Kebutuhan listrik adalah kebutuhan dasar masyarakat Indonesia. Peningkatan jumlah penduduk di Indonesia mengakibatkan kebutuhan listrik semakin meningkat. Sehingga, produksi energi listrik perlu ditingkatkan untuk memenuhi kebutuhan listrik di Indonesia. Namun, kebutuhan listrik tidak dapat dipenuhi oleh pembangkit listrik yang dimiliki oleh negara. Oleh karena itu, energi terbarukan didorong oleh pemerintah untuk menjaga ketahanan dan kemandirian energi. Mengkonversi energi surya menjadi energi listrik melalui perangkat panel surya adalah salah satu contoh alternatif untuk mendapatkan energi terbarukan. Pada penelitian ini, bertujuan untuk menganalisis terkait faktor keekonomian sistem on grid pembangkit listrik tenaga surya pada beban rumah tangga tipe 2200VA dengan dua jenis profil beban yang berbeda. Hasil perhitungan faktor keekonomian energi untuk sistem on grid pembangkit listrik tenaga surya berdasarkan atas perhitungan Net Present Cost (NPC) dan Break Even Point (BEP) dengan cara membandingkan hasil dari rumah sebelum dan sesudah menggunakan sistem on grid PLTS. Berdasarkan hasil analisis pada rumah teliti diperoleh penurunan daya sebesar 21,89% dibandingkan dengan rumah banding. Sehingga, NPC dapat turun sebesar 13,12%-15,31% dengan rentang tagihan listrik sebesar Rp 23.060.260,00 – Rp 25.195.970,00. Sedangkan, hasil analisis dengan melihat kecepatan modal kembali atau BEP menunjukkan bahwa sistem on grid PLTS pada rumah teliti lebih unggul dibandingkan dengan rumah banding dengan hasil pada jenis BEP Simple Payback sebesar 7,60 tahun dan Discounted Payback sebesar 8,73 tahun.
Aquaponics is an activity to cultivate plants and fish. Giving the organic liquid fertilizer as a nutrient enhancer will improve the quality of catfish and lettuce yields. However, this causes the water to become dirtier. The deteriorating water is characterized by the TDS value in aquaponic ponds exceeding 500 PPM. If the TDS value exceeds 500 PPM, water drainage will be applied. For treatment of aquaponic, experts use manual control. The system is designed to solve it. The method used in this Final Project is the study of literature to find the basic theory in aquaponics and analyze the problems. The next thing to do is designing the system, starting from the design of automatic control systems to remote monitoring systems. Afterwards, testing tools is conducted to see whether the system is able to run well. Based on the test results, the system can run well; however, a number of deviations are found, including the RTC test showing a delay time for 00.02.10 of RTC compared to the national standard time and an error of 2.4% found on a calibrated TDS sensor testing. The success rate of sending monitoring data is 100% of Antares connectivity testing.
The on-grid solar power system is a solution that can fulfil the ever-increasing demands for electricity. The important role of a solar grid system is to save and reduce the cost of electricity, particularly those with high energy usage in the daytime. This research aims to design a configuration for placing a solar grid system in the housings for the city of Bandung, Indonesia. The research method used is to collect solar radiation data, tool specifications, and other data needed, and then proceed to optimise on these bases. On-grid solar power system design requires the software HOMER. HOMER is used to find the correct system configuration, payback period, and the best NPC technically. Based on the result of optimization, the system configuration can fill the needs of electricity by about 42 % for daily consumption with a total NPC cost of around thirty eighty million one hundred thousand with four years payback period.
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