- JD, George Mason University School of Law, (May 2003). 
- B.A., Utah State University, (June 1998). 
Daniel R. Simmons is a conservative energy policy specialist and former fossil fuel lobbyist now leading the Department of Energy’s Office of Energy Efficiency and Renewable Energy (EERE), where he had been the principal deputy assistant secretary. President Trump nominated Simmons to lead the EERE Office in May 2017. , 
Prior to joining the Department of Energy, Simmons worked with several Koch-affiliated think tanks, including the Institute for Energy Research (IER), the American Legislative Exchange Council (ALEC), and the Mercatus Center.
Most recently (from 2008 to 2017), Simmons worked at IER, a fossil fuel-backed think tank that focuses on “energy analysis and free-market energy and environmental policy.” He was vice president of policy at IER and its lobbying arm, the American Energy Alliance (AEA). In 2015 AEA recommended that Congress eliminate DOE’s Office of Energy Efficiency and Renewable Energy. 
Before his tenure at IER, Simmons served as Director of the Natural Resources Task Force at ALEC. He also was a former research fellow at the Mercatus Center. Both ALEC and Mercatus are tied to the Koch network. Simmons had also been listed as a policy expert on the website for the Heartland Institute, another Koch-supported think tank. 
Stance on Climate Change
According to the Energy and Policy Institute (EPA), Simmons’ “work for IER and AEA was part of the fossil fuel industry’s ongoing disinformation campaign to manufacture doubt about the causes and risks of climate change, and fight policies that accelerate the transition to a clean energy economy.” 
EPI noted that Simmons had criticized a federal Clean Energy Standard bill in a 2013 op-ed that questioned the “dirtiness” of carbon pollution, and that he had also attacked state Renewable Portfolio Standards (RPS) with misleading testimony about their costs. 
December 5, 2016
“The economic damages incurred achieving that goal would be greater than the damage caused by a warming world,” Simmons said.
In a 2007 ALEC guide for state legislators co-written by Simmons and other ALEC staff, denies greenhouse gas emissions are “increasing the rate of sea level rise” and questions established climate science: 
“Al Gore is indeed correct that there is a correlation between carbon dioxide increased and temperature, but the connection is the opposite of what he assumes,” the report reads. “The studies show that carbon dioxide follow temperature, not the other way around.”
May 9, 2017
Simmons claimed in an internal blog post to DOE’s EERE staffers that he was a proponent of clean energy, despite his previous work attacking renewables like wind and solar.
October 13, 2016
August 18, 2014
“If climate change were driving forest fires, as Holdren is insinuating, then this means that climate change reduces the number of wildfires…The White House’s political operatives – Podesta and Holdren – would like to blame forest fires on climate change, but there is not much evidence that climate change is driving wildfires,” he wrote at IER.
April 24, 2015
The American Energy Alliance (where Simmons worked at the time) called on Congress to eliminate the Office of Energy Efficiency and Renewable Energy, the office that Simmons now heads. AEA wrote in 2015: 
“The role of this office is to promote and subsidize 'clean energy' as determined by government bureaucrats. However, the government should not be in the business of trying to commercialize products and services it deems 'clean'. This office aims to control multiple sectors of the economy, from energy production and transmission to manufacturing and construction. Cutting this office would help end large corporate handouts to failed technologies, such as the disastrous Chevy Volt bailout, and allow for true market-based innovation and development. Est. savings 2016-2020 = $9.78 billion.” 
IER served a FOIA request on EPA initially on March 16, 2012, and renewed the filing November 19, 2012, seeking communications between EPA and environmental groups regarding the Keystone XL pipeline. , 
“We wanted documents from EPA and to EPA from environmental groups to see if there was collusion, especially from EPA, with the environmental groups to try to stall or stop the pipeline,” Simmons explained in an audio clip. 
Simmons authored parts of the ALEC publication, “Energy, Environment, and Economics: A Guide for State Legislators.” In the section titled “Kyoto Spawn: The Progeny of the Kyoto Protocol” he criticized the Kyoto Protocol — the first global treaty aimed at reducing emissions — as well as state and regional climate policies like RGGI and California’s Global Warming Solutions Act. 
He concludes by writing, “The science of climate change is unsettled […] The question is how much, if any, of this warming is caused by human activities. We also know that plans such as the Kyoto Protocol, Regional Greenhouse Gas Initiative, and California’s Global Warming Solutions Act are both costly and provide no environmental benefits. If we are concerned about future generations, we owe it to them study the issues of global warming, but not dramatically limit our economic competitiveness by embarking on misguided schemes.” 
March 6, 2006
Simmons testified before the Connecticut legislative Environment Committee on House Bill 5623 (An Act Withdrawing from the Regional Greenhouse Gas Initiative): 
“The Regional Greenhouse Gas Initiative will produce no environmental benefits, but it will entail real costs,” he said in that testimony. 
Simmons was pressed by Rep. O’Rourke on this claim. In defending his stance, Simmons argued that he wasn’t denying climate change, but merely insisting that climate policies such as RGGI and the Kyoto Protocol were not cost effective. 
“What I am saying is the Kyoto Protocol, the Cap and Trade System, such as Kyoto Protocol, such as RGGI, isn't going to produce environmental benefits, and that we would be wise to spend our money in other ways, such as reducing greenhouse gas emissions from the Third World,” Simmons said. 
Rep. O’Rourke also asked Simmons about ALEC’s funding sources, and Simmons admitted to fossil fuel funding: “But I mean, and my point is, that is that, yes, we receive funding from the oil companies, and, as a result, you should be critical of my testimony.” 
- U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy — Acting Assistant Secretary; Principal Deputy Assistant Secretary (Jan 2017 – present). 
- Institute for Energy Research (IER) — Director of Regulatory and State Affairs; Vice President for Policy (May 2008 – Jan 2017). 
- American Energy Alliance (AEA) — Former Director of Regulatory and State Affairs. 
- American Legislative Exchange Council (ALEC) — Director, Natural Resources Task Force (April 2005 – May 2008). 
- Mercatus Center, Regulatory Studies Program — Emmett McCoy Research Fellow (April 2003 – April 2005). 
- U.S. House of Representatives Committee on Resources — Legislative Staff, Forest and Forest Health Subcommittee (Jan 2001 – Jan 2003. 
Daniel Simmons does not appear to be active on social media.
Simmons has written numerous blog posts at the Institute for Energy Research, Master Resource, and blogs and news sources. Many of Simmons' articles are critical of renewable energy and of regulations on fossil fuels. Some examples below:
- “A Subsidy Lesson for the Center for Biological Diversity and the Solar Lobby,” Institute for Energy Research, October 13, 2016.
- “Solar Lobby Swings and Misses at IER Report,” Institute for Energy Research, August 5, 2016.
- “Hard Facts: An Energy Primer,” (3rd ed.), Institute for Energy Research, March 3, 2015.
- “Sorry EPA, There’s No Evidence You Care About Grid Reliability,” Institute for Energy Research, February 26, 2015.
- “What's Fueling Forest Fires?“ Institute for Energy Research, August 18, 2014.
- “Reality vs. EPA’s Carbon Capture Dreams,” Institute for Energy Research, January 8, 2014.
- “The Debilitating Cost of Federal Regulatory Compliance,” Institute for Energy Research, December 6, 2013.
- “EPA Ignores Reality with 2014 Ethanol Mandate,” Institute for Energy Research, November 15, 2013.
- “Why is EPA avoiding the people most affected by coal regulations?“ Institute for Energy Research, October 11, 2013.
- “EPA's Disingenuous Power Plant Regulation,” Institute for Energy Research, September 20, 2013.
- “New Special Interest Group Pushes To Stop Natural Gas Exports,” Institute for Energy Research, January 29, 2013.
- “Is Big Wind Fleecing U.S. Taxpayer?“ Institute for Energy Research, December 19, 2012.
- “California's Flex Alert: A Case Study in Intermittent Energy,” Institute for Energy Research, August 13, 2012.
- “Hard Facts: An Energy Primer,” Institute for Energy Research, April 26, 2012.
- “New Study Finds that Hydraulic Fracturing is Safe,” Institute for Energy Research, February 23, 2012.
- “Impact of EPA’s Regulatory Assault on Power Plants–February 7 Update,” Institute for Energy Research, February 7, 2012.
- “Energy Regulation in the States: A Wake-Up Call,” Master Resource, May 28, 2010.
Public Comments on Proposed Rules/Regulations 
- Comment on EPA’s Proposed Rulemaking to Establish Light-Duty Vehicle Greenhouse
- Gas Emissions Standards (MY 2017-2025)
- Comment On EPA’s Proposed Rulemaking to Establish Light-Duty Vehicle Greenhouse Gas Emissions Standards (MY 2012–2016)
- Public Interest Comment on EPA’s Proposed National Emissions Standards for Mercury
- Public Interest Comment on Fish and Wildlife Service’s Revisions to “Safe Harbor Agreements and Candidate Conservation Agreements with Assurances”
- Public Interest Comment on the Fish and Wildlife Service’s “Draft Policy for Enhancement-of-Survival Permits for Foreign Species Listed Under the Endangered Species Act”
- Public Interest Comment on the OMB’s Draft 2003 Report to Congress on the Costs and Benefits of Federal Regulations
“Daniel R. Simmons” (PDF), 2013. Retrieved from U.S. House of Representatives Document Repository.
Gavin Bade. “Trump Nominates Climate Doubter Simmons to Head DOE Renewables Office,” Utility Dive, June 15, 2018. Archived July 17, 2018. Archive.is URL: https://archive.fo/p8QKY
Ben Jervey. “Trump Taps Renewable Energy Antagonist to Run Renewable Energy Office,” DeSmog, May 6, 2017.
Dave Anderson. “Daniel Simmons: New Head of EERE Worked for Groups That Tried to ‘Eliminate’ It,” Energy and Policy Institute, June 5, 2017. Archived July 17, 2018. Archive.is URL: https://archive.fo/6Be83
Evan Halper. “Trump Brings Koch Network’s Green-Energy Foes From the Fringe to the Center of Power,” Los Angeles Times, December 5, 2016. Archived July 17, 2018. Archive.is URL: https://archive.fo/m9lww
“Energy, Environment, And Economics” (PDF), ALEC, 2007. Retrieved from SourceWatch.org.
Daniel Simmons. “A Subsidy Lesson for the Center for Biological Diversity and the Solar Lobby,” Institute for Energy Research, October 13, 2016. Archived July 17, 2018. Archive.is URL: https://archive.fo/sDCbf
“IER Renews Keystone XL FOIA Request, Cites Lisa Jackson Alias,”IER, November 19, 2012. Archived July 17, 2018. Archive.is URL: https://archive.fo/YVmTJ
“Daniel Simmons on the Institute for Energy Research's FOIA request of Lisa Jackson,” YouTube video uploaded by user “Darin RebootCongress,” November 29, 2012. Archived .mp4 on file at DeSmog.
ENV Committee Hearing Transcript, 2006. Retrieved from Connecticut General Assembly.