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Gokul Iyer

Integrated Human-Earth SS Team


Gokul Iyer is a scientist at the Pacific Northwest National Laboratory's Joint Global Change Research Institute. Dr. Iyer's research focuses on investigating issues at the intersections of energy, land, water using multi-sector multi-scale human-Earth system models. Currently, he coordinates the development and application of a state-level model of the U.S. (GCAM-USA) embedded within a global human-Earth system model (GCAM).

Research Interests

  • Human-Earth system modeling
  • Energy system transformations
  • Technology and Technological change
  • Sustainable Development

Education and Credentials

  • Ph.D., Environmental Policy, University of Maryland, USA.
  • Master of Technology, Energy Systems Engineering, Indian Institute of Technology - Bombay, India.
  • Bachelor of Technology, Electrical and Electronics Engineering, Visvesvaraya National Institute of Technology, Nagpur, India.

PNNL Publications


  • Iyer GC, KV Calvin, LE Clarke, JA Edmonds, N Hultman, CA Hartin, HC McJeon, J Aldy, and W Pizer. 2018. "Implications of sustainable development considerations for comparability across nationally determined contributions." Nature Climate Change 8:124-129.  doi:10.1038/s41558-017-0039-z


  • Davidson CL, RT Dahowski, HC McJeon, LE Clarke, GC Iyer, and M Muratori. 2017. "The value of CCS under current policy scenarios: NDCs and beyond." Energy Procedia 114:7521-7527.  doi:10.1016/j.egypro.2017.03.1885
  • Iyer GC, and JA Edmonds. 2017. "Emission scenarios: Explaining differences." Nature Climate Change 7:99-100.  doi:10.1038/nclimate3200
  • Iyer GC, CM Ledna, LE Clarke, JA Edmonds, HC McJeon, GP Kyle, and J Williams. 2017. "Measuring Progress from Nationally Determined Contributions to Mid-Century Strategies." Nature Climate Change 7:871-874.  doi:10.1038/s41558-017-0005-9
  • Iyer GC, LE Clarke, JA Edmonds, GP Kyle, CM Ledna, HC McJeon, and MA Wise. 2017. GCAM-USA Analysis of U.S. Electric Power Sector TransitionsPNNL-26174, Pacific Northwest National Laboratory, Richland, WA. 


  • Aldy J, W Pizer, M Tavoni, L Reis, K Akimoto, GJ Blanford, C Carraro, LE Clarke, JA Edmonds, GC Iyer, HC McJeon, RG Richels, S Rose, and F Sano. 2016. "Economic Tools to Promote Transparency and Comparability in the Paris Agreement." Nature Climate Change 6:1000 - 1006.  doi:10.1038/nclimate3106
  • Iyer GC, LE Clarke, JA Edmonds, and N Hultman. 2016. "Do National-Level Policies to Promote Low-Carbon Technology Deployment Pay Off for the Investor Countries?" Energy Policy 98:400-411.  doi:10.1016/j.enpol.2016.08.017
  • Iyer GC, LE Clarke, JA Edmonds, and N Hultman. 2016. "Do national-level policies to promote low-carbon technology deployment pay off for the investor countries?" Energy Policy 98:400-411.  doi:10.1016/j.enpol.2016.08.017


  • Fawcett A, GC Iyer, LE Clarke, JA Edmonds, N Hultman, HC McJeon, J Rogelj, R Schuler, J Alsalam, GR Asrar, J Creason, M Jeong, J McFarland, A Mundra, and W Shi. 2015. "Can Paris pledges avert severe climate change?" Science 350(6265):1168-1169 .  doi:10.1126/science.aad5761
  • Iyer GC, JA Edmonds, AA Fawcett, N Hultman, J Alsalam, GR Asrar, KV Calvin, LE Clarke, J Creason, M Jeong, J McFarland, A Mundra, PL Patel, W Shi, and HC McJeon. 2015. "The contribution of Paris to limit global warming to 2 °C." Environmental Research Letters 10(12):Article No. 125002.  doi:10.1088/1748-9326/10/12/125002
  • Iyer GC, LE Clarke, JA Edmonds, BP Flannery, N Hultman, HC McJeon, and D Victor. 2015. "Improved Representation of Investment Decisions in Assessments of CO2 Mitigation." Nature Climate Change 5(5):436-440.  doi:10.1038/nclimate2553
  • Iyer GC, LE Clarke, JA Edmonds, N Hultman, and HC McJeon. 2015. "Long-term payoffs of near-term low-carbon deployment policies." Energy Policy 86:493-505.  doi:10.1016/j.enpol.2015.08.004
  • Iyer GC, N Hultman, J Eom, HC McJeon, PL Patel, and LE Clarke. 2015. "Diffusion of low-carbon technologies and the feasibility of long-term climate targets." Technological Forecasting and Social Change 90(Part A):103-118.  doi:10.1016/j.techfore.2013.08.025


  • Iyer GC, N Hultman, S Fetter, and SH Kim. 2014. "Implications of Small Modular Reactors for Climate Change Mitigation." Energy Economics 45:144-154.  doi:10.1016/j.eneco.2014.06.023

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