## 1 Introduction  
Due to an abundance of energy in Indonesia, most energy usage by Indonesian individuals and entities are of high consumption. The high level of electricity consumption translates into higher cost. Moreover, the majority of Indonesian electricity generation power plants are fossil-fueled. A change in oil price affects the fuel price and in turn influences the base electricity fares. One effort to lower the electricity energy consumption cost on the customer side is to increase the efficiency of electricity usage, such as using energy-efficient equipment, and deactivate electrical equipment when not in use [1]. Current buildings that adhere to energy efficiency are almost entirely built after the year 2000; it is also the case mentioned by [PERSON] et al. [2] and [PERSON] et al. through effective thermal zone occupancy [3]. Therefore, for older and already built buildings to implement energy saving measures is still uncommon.  
One aspect that can be made more efficient in universities is room lighting. Classrooms' electricity consumption in Universitas Budi Luhur is already controlled by a main panel; when no lectures are scheduled in a classroom, that particular classroom can be remotely deactivated. Other aspects of room lighting usage are office room and toilets, which is mostly on from the start of the morning workday to the end of night classes. Offices and staff rooms can be manually switched off when not occupied, but the use of public facilities such as toilets and enclosed corridors is random, therefore it is impractical to manually switch the lightings. The proposed method in this pilot project is to use an automatic switch which detects the presence of humans in a particular room. Aside from its practical use, no contact with humans needed, it also helps to lower the electricity consumption and longer lifetime of the lightbulbs, which in turn translates into cost saving. The objective of this pilot project is to measure the level of reduction in electricity consumption and its correlation to the reduction of equivalent carbon emissions, with the expected benefit being energy efficiency and cost saving for the campus [4].  
Joint Crediting Mechanism (JCM) is a bilateral cooperation between Japan and the host country in low carbon development implementation that intended to push Japanese private-sector companies to invest in Low Carbon Development activities in Indonesia, as a host country, by giving financial and technical incentives. JCM activities cover many sectoral scopes, including energy efficiency, renewable energy, deforestation and forest degradation, waste management, fugitive emission, and the manufacturing industry. Indonesia hopes that JCM can be an interesting alternative to support Greenhouse Gas (GHG) emissions reduction activities that are conducted by both Indonesia private and public sectors and support economic growth without overriding environmental sustainability. Until mid-2017, 109 feasibility studies have been undertaken under the cooperation between Japanese Company partnership with Indonesian private companies and central and local government. From the feasibility studies, both countries implement 28 JCM projects. Fifteen projects had been installed and the other 13 projects are still under construction. Total investment values of the 28 projects are 150 million USD. Figure 1 shows the JCM scheme between Indonesia and Japan where the Indonesian side that is able to reduce GHG emissions through measuring, reporting, and verification (MRV) is supported by the Japanese side [5].