CLEAN ENERGY INTEGRATION
Advancements in clean energy present opportunities and challenges; aligning our future energy resources with our aging electrical grid is a highly nuanced proposition. Our energy system is complex, the rate of change in our resource mix has accelerated and the velocity of new data hitting utility control rooms is changing the way we manage grid operations. PNNL researchers are working with some of the nation’s most forward-leaning utilities to ensure we have the tools and systems in place to create an efficient, secure and affordable energy future as clean energy proliferates. Our researchers are working to drive down the costs of clean energy technologies and overcome challenges to large-scale renewable energy deployment. We’re helping optimize siting of energy installations and assessing new opportunities, improving technologies to meet environmental and power production goals, and building tools for resource characterization and advanced forecasting capabilities.
Wind
In 2012, wind power became the number one source for new electricity generation in the U.S., representing 43 percent of all new capacity additions. Wind now produces enough electricity to power 15 million U.S. homes per year, PNNL is working with stakeholders across the spectrum to advance sustainable renewable energy from utility-scale, small-scale distributed and offshore wind.
To improve the performance of utility-scale wind farms, we’re focusing research on better understanding the resource itself so that wind farms harvest energy more efficiently and plant operators can forecast and respond to changes in wind speed and turbulence. Ultimately, that drives down power costs. Meanwhile, small-scale or “distributed wind” is one of the fastest growing sectors of the industry, with projects in all 50 states. PNNL analysts are helping inform this dynamic market through the Department of Energy's distributed wind market report.
Offshore wind represents one of the best opportunities to dramatically increase wind generation. Scientists at PNNL are investigating the challenges to development of the immense wind energy potential off both U.S. coasts. We are supporting Department of Energy-funded offshore wind demonstration projects off the Coast of Oregon, Maine, and in Lake Eerie. PNNL researchers are addressing pressing environmental questions facing early deployment of offshore wind in the U.S., illuminating sustainable pathways towards utility-scale deployment.
Solar
PNNL is taking a systems approach to driving solar development at scale. Our researchers are connecting the dots on how next-generation nanomaterials can improve manufacturing efficiencies and drive down solar panel costs. Since the sun doesn’t shine 24-7, we’re also working on systems that combine solar and clean-burning natural gas to lower carbon emissions and drive up power plant efficiency. Meanwhile, we’re exploring new solar-thermal energy solutions—designed to capture solar energy during the day and release it when it’s dark. PNNL scientists are designing new materials that can store up to 10 times more heat per mass than today’s industry standard, which relies on molten salts and requires large, expensive equipment. Ultimately, the goal is to make thermal energy storage systems smaller and more cost-competitive.
Driving down costs is one key to helping clean energy technologies thrive, and so is understanding how to seamlessly integrate them with the existing electricity infrastructure. PNNL researchers are using Grid Lab-D, an open source tool we’ve developed, to demonstrate how solar generating technologies can be deployed in a variety of contexts including microgrids, and in typical neighborhoods.
Water Power
Much of our work on clean energy is targeted at increasing performance of the Pacific Northwest and the nation’s largest existing renewable resource. PNNL's experts in hydropower—from computer scientists to biologists and engineers—are helping to optimize efficiency and environmental performance of hydroelectric plants. The Columbia River is the nation’s most important hydropower resource, producing 40 percent of the nation’s hydroelectric generation and up to 70 percent of the region’s power. At PNNL, we are working with stakeholders in the Pacific Northwest, the Army Corps of Engineers, and the Department of Energy to ensure that this resource continues to provide its many benefits, while setting a new standard for environmental sustainability. As aging turbines are replaced in existing hydropower dams computational modeling and state of the art fisheries research combine to aid design of the next generation hydro turbine that meets or exceeds current biological performance standards and produces more power. As an example, next-generation turbines at Grant County PUD’s Wanapum Dam are achieving greater than 97 percent fish survival, while producing an additional 132,000,000 kwh annually, enough to power an extra 12,440 homes.