Energy

California is embarking on an audacious new climate plan that aims to eliminate the state’s greenhouse gas footprint by 2045, and in the process, slash emissions far beyond its borders. The blueprint calls for massive transformations in industry, energy and transportation, as well as changes in institutions and human behaviors. These transformations won’t be easy. Two years of developing the plan have exposed myriad challenges and tensions, including environmental justice, affordability and local rule. For example, the San Francisco Fire Commission had prohibited batteries with more than 20 kilowatt-hours of power storage in homes, severely limiting the ability to store solar electricity from rooftop solar panels for all those times when the sun isn’t shining. More broadly, local opposition to new transmission lines, large-scale solar and wind facilities, substations for truck charging, and oil refinery conversions to produce renewable diesel will slow the tran...

The year 2022 was a tough one for the growing number of people living in food insecurity and energy poverty around the world, and the beginning of 2023 is looking bleak. Russia’s war on Ukraine, one of the world’s largest grain and fertilizer feedstock suppliers, tightened global food and energy supplies, which in turn helped spur inflation. Drought, exacerbated in some places by warring groups blocking food aid, pushed parts of the Horn of Africa toward famine. Extreme weather disasters have left trails of destruction with mounting costs on nearly every continent. More countries found themselves in debt distress. But below the surface of almost weekly bad news, significant changes are underway that have the potential to create a more sustainable world – one in which humanity can tackle climate change, species extinction and food and energy insecurity. I’ve been involved in international sustainable development for most of my career and now teach climat...

At first glance, the connections between the world’s growing population and climate change seem obvious. The more people we have on this planet, the larger their collective impact on the climate. However, a closer look with a longer time horizon reveals relationships between population size and climate change that can help us better understand both humanity’s predicament as the global population hits 8 billion people – a milestone the United Nations marked on Nov. 15, 2022. Looking back to the Stone Age For much of human evolution, our ancestors were exposed to large climatic fluctuations between ice ages and intermittent warmer periods. The last of these ice ages ended about 10,000 years ago. Before the ice sheets melted, sea levels were about 400 feet (120 meters) lower than today. That allowed humans to migrate around the world. Everywhere they went, our ancestors reshaped landscapes, first by clearing forests and then through early agricultural practices...

With the U.S. government promising over US$360 billion in clean energy incentives under the Inflation Reduction Act, energy companies are already lining up investments. It’s a huge opportunity, and analysts project that it could help slash U.S. greenhouse gas emissions by about 40% within the decade. But in conversations with energy industry leaders in recent months, we have heard that financial incentives alone aren’t enough to meet the nation’s goal of reaching net-zero emissions by 2050. In the view of some energy sector leaders, reaching net zero emissions will require more pressure from regulators and investors and accepting technologies that aren’t usually thought of as the best solutions to the climate crisis. ‘Net-zero,’ with natural gas In spring 2022, we facilitated a series of conversations at Penn State University around energy and climate with leaders at several major energy companies – including Shell USA, and electric u...

Electric planes might seem futuristic, but they aren’t that far off, at least for short hops. Two-seater Velis Electros are already quietly buzzing around Europe, electric sea planes are being tested in British Columbia, and larger planes are coming. Air Canada announced on Sept. 15, 2022, that it would buy 30 electric-hybrid regional aircraft from Sweden’s Heart Aerospace, which expects to have its 30-seat plane in service by 2028. Analysts at the U.S. National Renewable Energy Lab note that the first hybrid electric 50- to 70-seat commuter plane could be ready not long after that. In the 2030s, they say, electric aviation could really take off. That matters for managing climate change. About 3% of global emissions come from aviation today, and with more passengers and flights expected as the population expands, aviation could be producing three to five times more carbon dioxide emissions by 2050 than it did before the COVID-19 pandemic. Aerospace engineer and assi...