This workshop convened leading experts in solid state ionics, low-cost ceramics and composites manufacturing, mechanical properties of thin functional layers, mixed ionic and electronic conductors, nanostructuring, solid-state polymers, solid-state synthetic techniques, high-throughput materials computation and discovery, and novel approaches to ionically conductive layers to identify innovative research paths to advance solid ion conductors for energy technologies.

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ARPA-E held its sixth annual ARPA-E Energy Innovation Summit February 9 - February 11, 2015 at the Gaylord Convention Center just outside Washington, D.C. The Summit brought together thought leaders from academia, business, and government to discuss cutting-edge energy issues and facilitate relationships to help move technologies into the marketplace.

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This workshop discussed the challenges and opportunities associated with development of new power system optimization tools in the context of cost effectively facilitating the integration of high penetrations of renewable generation.

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This workshop addressed the technological, cost, and market barriers that impede efficiency improvements to single-pane windows. It brought together experts on windows and building envelopes, manufacturers of current low-cost technologies for improving single-pane windows, researchers working on advanced materials for window retrofits, and a representative group of the building owners and operators who make window retrofit decisions.

This workshop convened leading experts in building science, control systems, and computer science to identify innovative research paths to increase the adoption of energy-saving building controls by reducing one-off design and installation costs.

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The workshop convened thought leaders and experts in power systems, data analytics, and control systems to develop new ideas and paths forward for the development of disruptive technologies enabling optimal grid operation with increased adoption of distributed energy resources, while maintaining and possibly increasing grid reliability and reducing carbon footprint.

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This workshop convened leaders from distinct science and engineering communities to develop new ideas and identify potentially transformational R&D approaches in the bioenergy market.

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The workshop convened experts in combustion systems, solid-state heat engines, and waste heat recovery and utilization technologies to identify innovative research paths leading to the development of devices that can provide electricity, heating, and cooling in a combined system in the 500 watt to 20 kilowatt range.

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The workshop convened leading experts in thermal transport, advanced manufacturing, air-cooled condenser systems and dry power plant cooling technologies to identify innovative research paths forward for the development of disruptive technologies that can significantly reduce the water consumption needed to cool power plants at low cost.

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The workshop brought together the world's leading experts in concentrated photovoltaics (CPV), microscale optics, and MEMS to develop strategies and performance metrics for future research.