Hybrid Resources: Challenges, Implications, Opportunities, and Innovation

Mark Ahlstrom, Jacob Mays, Eric Gimon, Andrew Gelston, Caitlin Murphy, Paul Denholm, Greg Nemet

Research output: Contribution to journalArticlepeer-review

8 Scopus Citations


The electric power system has historically been designed to provide reliable energy to loads by using a relatively small number of well-understood generators. The distinction between load, generation, and transmission resources has been quite clear. Most of the responsibility for planning and operating a system - building a highly reliable network from less reliable parts - has been with the system manager, whether that be a utility, a regional market operator, or some similar entity. Given this historical context, many experts were initially perplexed by the rapidly growing popularity of hybrid resources, which combine multiple technologies into a single entity. Rather than depending on a system operator to provide instructions to individual technologies, hybrid resources intentionally take on more operational responsibility by optimizing and scheduling their combined functions. Interconnection queues in many regions reveal a large and growing interest in hybrids, suggesting that project developers and investors see them as providing advantages.

Original languageAmerican English
Pages (from-to)37-44
Number of pages8
JournalIEEE Power and Energy Magazine
Issue number6
StatePublished - 2021

Bibliographical note

Publisher Copyright:
© 2003-2012 IEEE.

NREL Publication Number

  • NREL/JA-6A20-78799


  • generators
  • hybrid power systems
  • planning
  • power system reliability
  • reliability engineering
  • technological innovation


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