However, the energy balance varies at different locations. In Gramercy neighborhood in Manhattan
with 833 buildings, the annual self-supply ratio is 0.0295, slightly higher than the Manhattan average.
Also the energy balance changes with the temporal scale. Simulation shows on the day of June 21st (Fig 2d), the daily self-supply ratio in Gramercy neighborhood is as high as 0.1015, indicating the high
productivity of solar buildings during the summer time. Furthermore, the temporal and spatial resolution
together can change the story considerably. Looking at each building, the energy dynamic is more
complex at the hourly scale, with sometimes the surplus of solar power stored or delivered back to the
power grid which may lead to energy loss. The results show that in Gramercy neighborhood at the same
day, the average self-supply ratio based on hourly calculation of each building is 0.0662, considerably
less than the aggregated ratio. The average surplus ratio is 0.0353, indicating the importance of the system
design to improve efficiency in dealing with the surplus energy.
However, the energy balance varies at different locations. In Gramercy neighborhood in Manhattanwith 833 buildings, the annual self-supply ratio is 0.0295, slightly higher than the Manhattan average.Also the energy balance changes with the temporal scale. Simulation shows on the day of June 21st (Fig 2d), the daily self-supply ratio in Gramercy neighborhood is as high as 0.1015, indicating the highproductivity of solar buildings during the summer time. Furthermore, the temporal and spatial resolutiontogether can change the story considerably. Looking at each building, the energy dynamic is morecomplex at the hourly scale, with sometimes the surplus of solar power stored or delivered back to thepower grid which may lead to energy loss. The results show that in Gramercy neighborhood at the sameday, the average self-supply ratio based on hourly calculation of each building is 0.0662, considerablyless than the aggregated ratio. The average surplus ratio is 0.0353, indicating the importance of the systemdesign to improve efficiency in dealing with the surplus energy.
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