Using Regional-First Planning to Streamline Large Load Interconnection

This briefing by RMI proposes a 'regional-first planning' framework to integrate large load interconnection requests (such as those from data centers) with system-wide transmission planning. The goal is to replace the current parallel, project-by-project approach with a coordinated model that identifies system-wide projects first to reduce total costs and improve regulatory oversight of network upgrades.

• The current approach to large load interconnection is inefficient because it separates the load interconnection process from system-wide planning, which misses potential efficiencies. RMI proposes 'regional-first planning,' which merges these into a single region-wide planning model to enable 'right-sized' investments and reduce total transmission costs.
• Regional-first planning consists of three conceptual steps: first, centralizing interconnection requests at the system-wide level (e.g., through a Regional Transmission Organization) to improve data visibility; second, using these requests to identify system-wide projects that meet both large load and broader system needs; and third, allowing transmission owners to propose remaining incremental local and interconnection investments.
• A regional-first framework addresses a 'regulatory gap' where load-related network upgrades often lack sufficient oversight from state and federal regulators. Currently, many such projects are exempt from state permits (CPCNs), and the Federal Energy Regulatory Commission (FERC) typically assumes expenses are prudent unless a third-party intervenor proves otherwise.
• To further close the regulatory gap, RMI recommends that FERC or Congress establish a federal or regional Independent Transmission Monitor (ITM) to assist state regulators and consumer advocates. Additionally, FERC should require standardized data reporting to help states differentiate transmission investments by driver and customer class for better cost recovery.

APA

RMI (2026). Using Regional-First Planning to Streamline Large Load Interconnection. https://rmi.org/resources/using-regional-first-planning-to-streamline-large-load-interconnection/

Chicago

RMI. Using Regional-First Planning to Streamline Large Load Interconnection. 2026. https://rmi.org/resources/using-regional-first-planning-to-streamline-large-load-interconnection/.

Wikipedia

{{cite report |author=RMI |title=Using Regional-First Planning to Streamline Large Load Interconnection |date=14 April 2026 |url=https://rmi.org/resources/using-regional-first-planning-to-streamline-large-load-interconnection/ |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{rmi2026using, author = {{RMI}}, title = {{Using Regional-First Planning to Streamline Large Load Interconnection}}, institution = {RMI}, year = {2026}, month = apr, url = {https://rmi.org/resources/using-regional-first-planning-to-streamline-large-load-interconnection/}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }