Renewable energy

It’s easy to feel pessimistic when scientists around the world are warning that climate change has advanced so far, it’s now inevitable that societies will either transform themselves or be transformed. But as two of the authors of a recent international climate report, we also see reason for optimism. The latest reports from the Intergovernmental Panel on Climate Change, including the synthesis report released March 20, 2023, discuss changes ahead, but they also describe how existing solutions can reduce greenhouse gas emissions and help people adjust to impacts of climate change that can’t be avoided. The problem is that these solutions aren’t being deployed fast enough. In addition to pushback from industries, people’s fear of change has helped maintain the status quo. To slow climate change and adapt to the damage already underway, the world will have to shift how it generates and uses energy, transports people and goods, designs buildings and...

Reading the latest international climate report can feel overwhelming. It describes how rising temperatures caused by increasing greenhouse gas emissions from human activities are having rapid, widespread effects on the weather, climate and ecosystems in every region of the planet, and it says the risks are escalating faster than scientists expected. Global temperatures are now 1.1 degree Celsius (2 degrees Fahrenheit) warmer than at the start of the industrial era. Heat waves, storms, fires and floods are harming humans and ecosystems. Hundreds of species have disappeared from regions as temperatures rise, and climate change is causing irreversible changes to sea ice, oceans and glaciers. In some areas, it’s becoming harder to adapt to the changes, the authors write. Still, there are reasons for optimism – falling renewable energy costs are starting to transform the power sector, for example, and the use of electric vehicles is expanding. But change aren’t hap...

Through a year of war in Ukraine, the U.S. and most European nations have worked to help counter Russia, in supporting Ukraine both with armaments and in world energy markets. Russia was Europe’s main energy supplier when it invaded Ukraine, and President Vladimir Putin threatened to leave Europeans to freeze “like a wolf’s tail” – a reference to a famous Russian fairy tale – if they imposed sanctions on his country. But thanks to a combination of preparation and luck, Europe has avoided blackouts and power cutoffs. Instead, less wealthy nations like Pakistan and India have contended with electricity outages on the back of unaffordably high global natural gas prices. As a global energy policy analyst, I see this as the latest evidence that less wealthy nations often suffer the most from globalized oil and gas crises. I believe more volatility is possible. Russia has said that it will cut its crude oil production starting on March 1, 2023, by...

Texans like to think of their state as the energy capital of the world. But in mid-February 2021, the energy state ran short of energy. An intense winter weather outbreak, informally dubbed Winter Storm Uri by the Weather Channel, swept across the U.S., bringing snow, sleet, freezing rain and frigid temperatures. Texas was hit especially hard, with all 254 counties under a winter storm warning at the same time. Across the state, sustained arctic temperatures froze power plants and fuel supplies, while energy demand for home heating climbed to all-time highs. Cascading failures in the electric power and natural gas sectors left millions of people in the dark for days. At least 246 people died, possibly many more, and economic damage estimates damages reached US$130 billion. Water systems, which require energy for pumping and treatment, also were severely damaged. At least 10 million people were under boil-water notices during and after the storm, sometimes for weeks. Low-incom...

As companies race to expand renewable energy and the batteries to store it, finding sufficient amounts of rare earth metals to build the technology is no easy feat. That’s leading mining companies to take a closer look at a largely unexplored frontier – the deep ocean seabed. A wealth of these metals can be found in manganese nodules that look like cobblestones scattered across wide areas of deep ocean seabed. But the fragile ecosystems deep in the oceans are little understood, and the mining codes to sustainably mine these areas are in their infancy. A fierce debate is now playing out as a Canadian company makes plans to launch the first commercial deep sea mining operation in the Pacific Ocean. The Metals Company completed an exploratory project in the Pacific Ocean in fall 2022. Under a treaty governing the deep sea floor, the international agency overseeing these areas could be forced to approve provisional mining there as soon as spring 2023, but several coun...