The National Electric Energy Data System or “NEEDS” database contains the generation unit records used to construct the "model" plants that represent existing and planned/committed units in EPA modeling applications of IPM. NEEDS includes basic geographic, operating, air emissions, and other data on these generating units. NEEDS v6 is a complete bottom-up update for EPA's new power sector modeling platform v6.  For a description of the sources used in preparing NEEDS v6, see Documentation, Chapter 4: Generating Resources.

Most Recent Version of NEEDS:

• NEEDS v620 rev: 12-16-20(6 MB)
  • Comment and Change Log rev: 12-16-20(27 K)

Previous Versions of NEEDS:

• NEEDS v620 rev: 10-05-20(6 MB)
  • Comment and Change Log rev: 10-05-20(16 K)
• NEEDS v6 rev: 6-30-2020(5 MB)
  • Comment and Change Log rev: 6-30-2020(162 K)
•  NEEDS v6 rev: 3-26-2020(5 MB)
  • Comment and Change Log rev: 3-26-2020(142 K) ​
• NEEDS v6 rev: 1-8-2020(5 MB)
  • Comment and Change Log rev: 1-8-2020(132 K) ​
• NEEDS v6 rev: 9-30-2019(4 MB)
  • Comment and Change Log rev: 9-30-2019(101 K)
• NEEDS v6 rev: 5-31-2019(4 MB)
  • Comment and Change Log rev: 5-31-2019(88 K)
• NEEDS v6 rev: 11-30-2018(3 MB)
  • Incremental Documentation for NOx Rates in NEEDS v6 rev: 9-14-2018(3 pp, 44 K)
• NEEDS v6 rev: 5-30-2018(3 MB)

• NEEDS User's Guide (rev: 5-31-2019)
• Guide for Commenting on NEEDS and IPM
• NEEDS Comment Template (optional) (XLSX)(1 pg, 15 K)

If you have any questions, please contact CAMD using our online form

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