Four Essential Assumptions for Future-Ready Grid Modeling

This report argues that traditional integrated resource planning (IRP) modeling assumptions are outdated for modern grids characterized by renewable energy, distributed resources, and climate change impacts. It advocates for updating assumptions across capacity expansion, production cost, and resource adequacy models, while integrating an energy equity lens to account for human impacts such as health and affordability.

• Traditional grid modeling assumptions designed for centralized fossil fuel plants are now outdated and may undervalue the contributions of energy storage, demand flexibility, and renewables in grid planning.
• Comprehensive modern grid planning requires updating essential assumptions across three specific types of models: capacity expansion models (long-term resource mix and least-cost portfolios), production cost models (short-term operational simulation to minimize costs), and resource adequacy models (reliability testing under peak demand and extreme weather).
• Technical modeling improvements must be supplemented with a holistic approach that incorporates an energy equity lens to address human impacts, including distributional equity, health, and affordability, particularly for vulnerable communities affected by emissions and resource development.

APA

RMI (2024). Four Essential Assumptions for Future-Ready Grid Modeling. https://rmi.org/resources/four-essential-assumptions-for-future-ready-grid-modeling/

Chicago

RMI. Four Essential Assumptions for Future-Ready Grid Modeling. 2024. https://rmi.org/resources/four-essential-assumptions-for-future-ready-grid-modeling/.

Wikipedia

{{cite report |author=RMI |title=Four Essential Assumptions for Future-Ready Grid Modeling |date=7 November 2024 |url=https://rmi.org/resources/four-essential-assumptions-for-future-ready-grid-modeling/ |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{rmi2024four, author = {{RMI}}, title = {{Four Essential Assumptions for Future-Ready Grid Modeling}}, institution = {RMI}, year = {2024}, month = nov, url = {https://rmi.org/resources/four-essential-assumptions-for-future-ready-grid-modeling/}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }