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This report argues that traditional integrated resource planning (IRP) modeling assumptions are outdated for modern grids characterized by renewable energy, distributed resources, and climate change impacts.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.

This toolkit provides electric utility regulators with tools, benchmarks, and guidance to ensure that utility integrated resource plans (IRPs) fully incorporate the funding and opportunities provided by the Inflation Reduction Act (IRA).

This report examines how open-source utility planning software and stakeholder-driven modeling can improve integrated resource planning (IRP) outcomes, using a case study of the 2021 resource plan from Louisville Gas and Electric and Kentucky Utilities.

This RMI briefing analyzes Georgia Power's December 2021 20-year energy plan, concluding that while the plan significantly reduces coal reliance, it remains inconsistent with a 1.5°C-aligned pathway and the parent company's 2050 net-zero goal due to continued gas reliance and underestimated load growth.

This document is an appendix to a toolkit by RMI that provides a comprehensive set of questions for regulators to use when evaluating how utilities incorporate Inflation Reduction Act (IRA) incentives into their Integrated Resource Plans (IRPs). It aims to help regulators identify cost-saving opportunities and assess the rationale behind utility assumptions regarding clean energy tax credits, hydrogen, carbon capture, and electrification.

This research paper by the World Resources Institute presents a framework of 12 combined supply and demand scenarios for Tamil Nadu's electricity sector through 2030-31 to assist utility planners in integrated resource planning and financial decision-making.