Valuing urban building flexibility portfolios under carbon-constrained electricity dispatch: A Shenzhen case study
Year: 2026
Type: preprint
Abstract: Urban building portfolios are often represented as aggregate demand, obscuring the different effects of temporal shifting and net energy reduction. We construct dispatch-oriented portfolios from hourly records for 143 screened Shenzhen buildings and evaluate them in a two-stage framework. A Guangdong DC optimal power flow supplies boundary prices and an offer-derived provincial average operational emissions proxy to a Shenzhen carbon-constrained dispatch model, which represents shifting and reduction with separate variables and costs. At the upper stress-test portfolio share of 0.60 and a 0.60\% tighter emissions budget, energy-neutral shifting reduces modeled Shenzhen-subsystem operating cost by 0.389 million RMB (0.268\%) while leaving the accounted-emissions-budget dual nearly unchanged. With a 2\% daily limit and a 200 RMB/MWh reduction cost, 1,480 MWh of reduction is economic without the emissions constraint. Applying the tight budget raises reduction to 2,283 MWh and changes the budget dual from 242.5 to 88.4 RMB/tCO$_2$. Shifting therefore provides mainly temporal operating-cost value, whereas net reduction can additionally relieve a binding accounted-emissions budget. The paired cases support distinct product definitions for the two services.
Source: Research Square
Institution: Chinese University of Hong Kong, Shenzhen
Language: English
Topic: Smart Grid Energy Management
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7204159139