Clean Energy 101: The Changing Electricity Grid

The document describes the traditional centralized electricity grid model, which has been the global default since 1882, and explains how it functions through generation, transmission, and distribution. It notes that while this model was historically cost-effective, aging infrastructure and extreme weather now necessitate a shift toward distributed energy resources (DERs) to enhance system resilience.

• The traditional centralized electricity system, common in the United States, Europe, and the developed world, relies on a linear process of generation, stepping up voltage for long-distance transmission, and stepping down voltage for end-user delivery.
• The centralized grid architecture has been the worldwide default since 1882, with US investment peaking after World War II followed by a period of stagnant demand and low investment starting in the 1970s.
• Current threats to the integrity of US transmission and distribution infrastructure include surging electricity demand, volatile fuel prices, and extreme weather events.
• Distributed energy resources (DERs), such as rooftop solar panels and battery storage, offer a more flexible and resilient alternative to the centralized model by diversifying power sources among many users.

APA

RMI (2026). Clean Energy 101: The Changing Electricity Grid. https://rmi.org/resources/clean-energy-101-the-changing-electricity-grid/

Chicago

RMI. Clean Energy 101: The Changing Electricity Grid. 2026. https://rmi.org/resources/clean-energy-101-the-changing-electricity-grid/.

Wikipedia

{{cite report |author=RMI |title=Clean Energy 101: The Changing Electricity Grid |date=23 June 2026 |url=https://rmi.org/resources/clean-energy-101-the-changing-electricity-grid/ |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{rmi2026clean, author = {{RMI}}, title = {{Clean Energy 101: The Changing Electricity Grid}}, institution = {RMI}, year = {2026}, month = jun, url = {https://rmi.org/resources/clean-energy-101-the-changing-electricity-grid/}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }