California wastes its extra solar, wind energy. Could hydrogen be the storage key?


No amount of solar panels and wind turbines alone will be enough for California to reach its goal of a clean electrical grid unless the state can solve its energy storage problem. The state already generates an abundance of energy from wind and solar farms, particularly during the sunny and blustery spring and early summer months. But it loses much of that energy because it has nowhere to store it, and unlike fossil fuels, the sun and wind are not dispatchable, and therefore are unable to be called on to generate power 24 hours a day. Utilities must rely on gas-fired power plants to keep up with California’s energy demands during peak demand periods. To learn more, read California wastes its extra solar, wind energy. Could hydrogen be the storage key? Reading this article may require a subscription.

Key Takeaways:

  • Some experts and legislators say the missing puzzle piece could be hydrogen, the most abundant element in the universe, which can be used as a zero-emission fuel for power plants, vehicles and machinery.
  • “I would say it’s almost the missing piece of the puzzle,” said Jussi Heikkinen, Director of Growth and Development at Wärtsilä Energy, a Finnish technology company that has built battery storage systems in California. “We don’t need to get rid of the power plants, but we need to get rid of fossil fuels.”
  • State Senator Nancy Skinner, D-Berkeley, is carrying a bill, SB18, that specifies the state’s climate and electrical grid plans include “green hydrogen,” or hydrogen gas that is produced using electricity from renewable sources.
  • According to Jack Brouwer, director of the National Fuel Cell Research Center, hydrogen is more effective for longer storage than batteries because it doesn’t lose energy over time and can be stored underground easily and cheaply.
  • Hydrogen advocates say that California ultimately needs a mix of hydrogen and batteries to reduce carbon emissions.

Path to 100% Perspective:

Investing in green hydrogen will be important as California looks to decarbonize its energy system. The state can turn this into a win-win by harnessing the excess power generated by existing wind and solar farms to produce hydrogen. The hydrogen can be stored and turned back into electricity using flexible thermal assets. Policies that enable rapid reductions in fossil fuel use and rapid increases in renewable generation in the electricity sector are a valuable piece to accelerating the decarbonization process. Legislation should steer electricity-sector decisions about investments, infrastructure and technology toward decisions that quickly reduce greenhouse gas emissions and pave the way for a 100% renewable energy future



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6 Out-of-the-Ordinary Energy Concepts From 2020


It’s been a “business-as-usual” year for renewables, despite the societal upheaval wrought by the coronavirus pandemic. Most 2020 headlines continue to highlight conventional renewable segments such as solar and energy storage. On the margins, virtual power plants have gone mainstream and green hydrogen has emerged as the energy carrier of choice for tomorrow’s fuel systems. But COVID-19 did little to dampen enthusiasm for more obscure energy concepts. To learn more, read “6 Out-of-the-Ordinary Energy Concepts From 2020.” 

Key Takeaways

  1. Filipino engineering student, Carvey Ehren Maigue has developed Aurora Renewable Energy and UV Sequestration or AuREUS, which uses vegetable-based panels as tinted films that can be applied to existing surfaces, such as walls and windows.
    • AuREUS’ ability to capture diffused ultraviolet rays is said to deliver a capacity factor of up to 50 percent, compared to a maximum of around 25 percent for photovoltaic (PV) solar energy.
  2. Salient Energy emerged from Shell’s GameChanger program with a zinc-ion battery chemistry believed to be cheaper, safer and longer-lasting than anything else on the market.
    • Salient claims its proprietary cathode materials store energy in zinc in a way that has never been commercialized before.
  3. Puerto Rican startup ReSynth specializes in “fuel enhancement” to reduce greenhouse gas concentrations from diesel and marine oils.
    • The fuel emulsion cuts sulfur and nitrous oxide emissions as well as carbon. Plus it has been approved by the U.S. Environmental Protection Agency, the Department of Energy and the U.S. Coast Guard. It works with engines from major manufacturers such as Wärtsilä.
  4. Spanish firm Vortex Bladeless was founded in 2014, but 2020 was a year for notable milestones for the innovators. Vortex launched a small-scale product, less than three feet tall, to compete with low-power off-grid PV.
  5. The Ocean Grazer concept, based at the University of Groningen in the Netherlands has developed the Ocean Battery which stores energy by pumping fresh water into flexible bladders that are deflated by the pressure of the seawater column when power is needed.
  6. Alberta-based Eavor Technologies believes one of its Eavor-Loop systems can pull energy from the center of the earth to heat 16,000 homes or produce industrial-scale electricity via heat-to-power engines.

Path to 100% Perspective

The path to 100% has not already been paved, therefore, commitments to innovation and creativity are essential to developing solutions for different communities, regions and utilities. However, grid operators also navigate balance between obscure energy concepts and sustainability for power systems that energize communities around the world. The possibilities are endless as entrepreneurs and energy experts continue to collaborate towards flexibility and sustainability in order to reach a renewable energy future.


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Black & Veatch leaving coal projects in the dust


Engineering and construction company Black & Veatch has announced it is ceasing participation in coal-based design and construction projects in an attempt to focus on more renewable energy work. Black & Veatch has been its increasing focus on renewable energy and energy storage projects over the last decade. The transition away from coal-based jobs will allow the firm to more fully focus on sustainable energy projects. To learn more, read “Black & Veatch leaving coal projects in the dust.”

Key Takeaways:

  • In an example of the company’s move to clean energy projects, earlier this year it was selected to work on the Intermountain Power Agency Renewal Project, one of the earliest installations of combustion turbine technology designed to use a high percentage of green hydrogen.
  • Black & Veatch will still carry out projects to convert coal plants to cleaner energy sources, as well as decommissioning existing coal plants. The biggest change is the contractor will no longer extend the life of any coal facility.
  • “Any decision of this nature will have an impact, but our global client base is overwhelmingly pushing toward a zero-carbon future,” Mario Azar, president of Black & Veatch’s power business said. “The fundamental challenge for the industry is whether to look to the future or continue to look to the past.

Path to 100% Perspective:

The influence of governments and organizations moving toward a zero-carbon future continues to expand to companies responding to the growing demand of their customers and investors. As the investment in energy-related innovation grows,  the renewable energy future presents more affordability, flexibility and reliability for organizations striving to accelerate decarbonization efforts.


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This is How the Government Can Ramp Up Climate Tech Investment


The last couple of weeks have brought a steady stream of new pledges to achieve net-zero carbon emissions within the next handful of decades. And yet a report released in September, by the International Energy Agency, estimated that roughly half of the technologies that will be needed to get to net zero globally by 2050 aren’t even commercially available yet. The secret of deep decarbonization is that it won’t happen by just plugging into a wind farm or buying carbon offsets in a tropical forest. Without new technologies, it will be impossible to rein in emissions from the most-carbon intensive sectors of the economy such as heavy industry and long-distance transport. To learn more, read “This is How the Government Can Ramp Up Climate Tech Investment.”  (Reading this article requires a subscription.)

Key Takeaways:

  • Physicist Varun Sivaram sees the first step is to establish a National Energy Innovation Mission and create a White House Task Force to coordinate spending across different federal agencies. Sivaram and his team include a draft executive order in the report so the next administration can just plug and play.
  • Step two is to ramp up spending on energy innovation research and development from the current rate of about $9 billion a year to at least $25 billion by 2022.
  • The plan breaks down decarbonization into 10 categories where breakthroughs must occur. These include clean fuels, clean agricultural systems, carbon capture use and sequestration, and carbon removal.
  • One of the most persuasive moments in the report comes in a chart showing the disconnect between the sectors in the U.S. responsible for emissions and the corresponding research budget through the Department of Energy. Electricity produces 27% of emissions but gets 47% of the research dollars, while industry produces 22% of the emissions but receives 6% of the innovation funding.
  • The proposed budget would remedy that by adding money to underfunded areas, such as tripling the money for carbon capture from $115 million a year to $300 million.

Path to 100% Perspective:

Government economic stimulus must go beyond merely boosting the amount of renewables, but should also support system flexibility. We don’t just need wind turbines and solar panels but also energy storage, optimization platforms and flexible power plant technology to balance the influx of renewables. Energy storage and digital optimization is already becoming essential as we increase the amount of renewables on the grid to manage the volatility of wind and solar. Flexible gas engine technology is ready to use future fuels such as green hydrogen and synthetic methane derived from renewable energy sources (Power-to-X). These will help to balance out the longer-term needs of the grid, that can’t be matched by shorter duration energy storage.


Photo: Luke Sharrett/Bloomberg


San Antonio Utility Taking Steps Into An Ultra-Green Future


Electric utilities are making efforts to reduce and end carbon emissions. But right now, they’re struggling with the overselling of alternatives when they don’t have enough essential backup in the form of storage. They also have the huge imperative of maintaining service — in lay terms, keeping the lights on. CPS Energy, San Antonio’s municipally owned electric and gas utility with over 860,000 electric and 358,000 gas customers, is putting its best big green foot forward, but wants to avoid being trapped into rigidity. To learn more, read “San Antonio Utility Taking Steps Into An Ultra-Green Future.”

Key Takeaways:

  • CPS Energy has canvassed the world, seeking ideas that will best deliver 500 MWe of new technology, 900 MWe of solar power and 50 MWe of storage.
  • In response to the CPS Energy July request for information (RFI), the utility has received nearly 200 expressions of interest from around the world.
  • The responses break down this way:
    • Refined gas-powered generation, turbines or reciprocating engines
    • Compressed-air energy storage
    • Liquid air (cryogenic) energy storage
    • Thermal energy storage, using mostly waste heat in concrete or rock hosts
    • Underground pumped hydro, using abandoned oil wells and mines for the drop
    • Kinetic storage with flywheels
  • These technologies promise longer duration, higher efficiency, and less degradation than today’s available battery storage, CPS Energy leadership said.

Path to 100% Perspective:

CPS has developed a Flexible Path plan with goals of reaching an 80 percent non-carbon-emitting energy portfolio by 2040 and reaching net-zero carbon emissions by 2050. The Texas municipal utility plans to add about 900 megawatts of solar, 50 megawatts of energy storage and 500 megawatts of new technology solutions, to include alternative fuels.


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