Stochastic simulation of occupant-driven energy use in a bottom-up residential building stock model
Journal Article
·
· Applied Energy
- Univ. of Utah, Salt Lake City, UT (United States)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
The residential buildings sector is one of the largest electricity consumers worldwide and contributes disproportionally to peak electricity demand in many regions. Strongly driven by occupant activities, household energy consumption is stochastic and heterogeneous in nature. However, most residential energy models applied by industry use homogeneous, deterministic activity schedules, which work well for predictions of annual energy consumption, but can result in unrealistic hourly or sub-hourly electric load profiles, with exaggerated or muted peaks. The increasing proportion of variable renewable energy generators means that representing the heterogeneity and stochasticity of occupant behavior is now crucial for reliable planning at both bulk-power and distribution-system scales. This work presents a novel and open-source occupancy simulation approach that can simulate a diverse set of individual occupant and household event schedules for all major electricity, fuel, and hot water end uses. To accomplish this, we evaluated three alternative occupant activity simulation approaches before selecting a hybrid combining time-inhomogeneous Markov chains and probability-sampling of event durations and magnitudes. Further, we integrated the stochastic occupancy simulation with an open-source bottom-up physics-simulation building stock model and published a set of 550,000 diverse household end-use activity schedules representing a national housing stock. The simulator was verified against time-use survey data, and simulation results were validated against measured end-use electricity data for accuracy and reliability. While we use data for the United States, our application demonstrates how similar approaches could be applied using the time-use survey data collected in many countries around the world.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office
- Grant/Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1889672
- Report Number(s):
- NREL/JA-5500-83706; MainId:84479; UUID:583b3b67-ebde-4d39-8963-69e448cadbe3; MainAdminID:67512
- Journal Information:
- Applied Energy, Journal Name: Applied Energy Vol. 325; ISSN 0306-2619
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Modeling occupancy-driven building loads for large and diversified building stocks through the use of parametric schedules
Short-run residential demand for electricity
Household energy consumption and expenditures 1993
Journal Article
·
Wed Jul 08 20:00:00 EDT 2020
· Applied Energy
·
OSTI ID:1660214
Short-run residential demand for electricity
Journal Article
·
Sat Oct 31 23:00:00 EST 1981
· Rev. Econ. Stat.; (United States)
·
OSTI ID:5774861
Household energy consumption and expenditures 1993
Technical Report
·
Thu Oct 05 00:00:00 EDT 1995
·
OSTI ID:110664