A fair, affordable way to decarbonize developing cities

Located on the northwest coast of the island of Java, Jakarta is home to about 10.5 million people. As the economic, cultural and political center of Indonesia, the city will undergo significant transformations as the country moves towards its goal of becoming a developed country by 2045. Such development will require must go hand in hand with rapid decarbonisation, to ensure a fair and sustainable economy. Future.

A research group recently found the numbers on the implementation of a energy systems recruit solar photovoltaic (PV) on Roof combined with tram (EV) in Jakarta, find a multitude of economic and environmental benefits. In the analysis, EVs are used as batteries to generate variable PV.

“Through widespread use of rooftop solar power combined with electric vehicles as batteries, it is possible to reduce CO2 emissions by 75–76%.₂ emissions, and the PV/EV system can provide electricity for city at a cost 33–34% cheaper than Jakarta’s existing energy system by 2030,” said Professor Takuro Kobashi, who led the study.

The team found that Solar power panels provided a cost-effective means of generating electricity in the city. These savings, 3–4% in 2019 will increase to around 8–15% by 2030. When taking into account the use of electric vehicles as batteries for PV (e.g. Car to Home or Car to Arrive). building systems), where PV electricity stored in EV batteries can also power cities, rooftop systems can meet 75–76% of Jakarta’s electricity needs with clean electricity and affordable price.

Kobashi has previously investigated rooftop PV plus EV systems, what he calls “SolarEV Cities” over Japanese cities. But this is the first time such an assessment has been applied to a developing city. He collaborated with Indonesian researchers to apply economic and technical analysis of Jakarta, comparing with Kyoto.

Unlike Kyoto, Jakarta’s tropical climate makes the need for heating virtually nonexistent throughout the year. Instead, year-round cooling is required, which is positively correlated with PV generation. Therefore, the establishment of SolarEV City in Jakarta will result in a 9% increase in decarbonisation compared to the implementation in Kyoto.

“We also found that roof angles and orientations are less important because the angle of elevation of the sun is higher in Jakarta than in Kyoto,” adds Kobashi.

Kobashi stated that the deployment of Solar Powered Cities is unquestionable creating a strategy for the rapid growth and decarbonization of Indonesia and low-latitude developing cities. is different.