On February 2, 2016 DOE published a Notice of Proposed Rulemaking (NOPR) for the IIP process. The NOPR was available for comment during a public comment period that closed on April 4, 2016. Comments DOE received on the NOPR are available below.
| Comment from Jeff Berns | February 16, 2016 |
| Comment from Judith Lee & Bob Cunningham | February 16, 2016 |
| Comment from Sarah Ball and Richard Loughery of EEI | March 22, 2016 |
| Comment from Tom Tiernan of PennWell | March 22, 2016 |
| Comments from Richard Loughery of EEI | March 22, 2016 |
| Comments from Karl Myers of Tri-State Generation &Transmission Association | April 1, 2016 |
| Comments from Sarah Ball of EEI | April 4, 2016 |
| Comments from Jesse Jacobe of WIRES | April 4, 2016 |
| Comments from Tom Vinson of AWEA | April 4, 2016 |
| Comments from James Ogsbury of Western Governor's Association | April 4, 2016 |
| Comments from Pamela Silberstein of NRECA | April 4, 2016 |