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Electric

mai 2025

We develop roadmaps to transform the all-purpose energy infrastructures (electricity, transportation, heating/cooling, industry, agriculture/forestry/fishing) of 139 countries to ones powered by wind, water, and sunlight (WWS). The roadmaps envision 80% conversion by 2030 and 100% by 2050. WWS not only replaces business-as-usual (BAU) power, but also reduces it ∼42.5% because the work: energy ratio of WWS electricity exceeds that of combustion (23.0%), WWS requires no mining, transporting, or processing of fuels (12.6%), and WWS end-use efficiency is assumed to exceed that of BAU (6.9%). Converting may create ∼24.3 million more permanent, full-time jobs than jobs lost. It may avoid ∼4.6 million/year premature air-pollution deaths today and ∼3.5 million/year in 2050; ∼$22.8 trillion/year (12.7 ¢/kWh-BAU-all-energy) in 2050 air-pollution costs; and ∼$28.5 trillion/year (15.8 ¢/kWh-BAU-all-energy) in 2050 climate costs. Transitioning should also stabilize energy prices because fuel costs are zero, reduce power d

mars 2025

A national fleet of battery-powered cars is unlikely to prove sustainable and could have catastrophic consequences globally.

janvier 2024

Small modular reactors (SMRs) have been the subject of endless hype in recent years but in fact, no SMRs have ever been built, none are being built now and in all likelihood none will ever be built because of the prohibitive costs. SMRs are defined as reactors with a capacity of 300 megawatts (MW) or less with serial factory production of reactor components (or ‘modules’). No SMRs have been built, but dozens of small (<300 MW) power reactors have been built in numerous countries, without factory production of reactor components.

décembre 2023

Policy-makers seeking to limit the impact of coal electricity-generating units (EGUs, also known as power plants) on air quality and climate justify regulations by quantifying the health burden attributable to exposure from these sources. We defined “coal PM2.5” as fine particulate matter associated with coal EGU sulfur dioxide emissions and estimated annual exposure to coal PM2.5 from 480 EGUs in the US. We estimated the number of deaths attributable to coal PM2.5 from 1999 to 2020 using individual-level Medicare death records representing 650 million person-years. Exposure to coal PM2.5 was associated with 2.1 times greater mortality risk than exposure to PM2.5 from all sources. A total of 460,000 deaths were attributable to coal PM2.5, representing 25% of all PM2.5-related Medicare deaths before 2009 and 7% after 2012. Here, we quantify and visualize the contribution of individual EGUs to mortality.

juillet 2023

Electrical blackouts like the ones in California are becoming more common. So are heat waves. A new study published in the journal of the National Institute of Health attempts to predict what will happen when both occur at the same time.
Read the latest news headlines and analysis about politics, sports, business, lifestyle and entertainment from award winning Irish and British journalists.

mai 2023

SACRAMENTO -- Data from the California Energy Commission (CEC) shows that 59 percent of the state’s electricity came from renewable and zero-carbon sources in 2020. The CEC estimates that in 2020, 34.5 percent of the state’s retail electricity sales were served by Renewables Portfolio Standard (RPS)-eligible sources such as solar and wind. When sources of zero-carbon energy such as large hydroelectric generation and nuclear are included, 59 percent of the state’s retail electricity sales came from non-fossil fuel sources in 2020. In 2019, over 60 percent of the state’s electricity came from renewable and zero-carbon sources. The decrease in 2020 is due to decline in hydroelectric generation caused by severe drought, as well as pandemic-related delays to new renewable energy projects.

mai 2023

Wind and solar reached a record 12% of global electricity in 2022, and power sector emissions may have peaked.

mars 2023

Climate change is reducing output and raising safety concerns at nuclear facilities from France to the US. But experts say adapting is possible—and necessary.

mars 2023

Many people believe that wind, solar and electric vehicles are solutions to our energy problems. In this post I talk about the important role complexity plays. Growing complexity uses energy in hidden ways. The result tends to be more energy use, rather than less, as complex solutions such as wind turbines, solar panels and electric vehicles are added. Many measures of energy desirability give unreasonably favorable ratings to wind and solar and electric vehicles. The problem is that dual systems are needed, driving up energy consumption. Without enough energy, economies tend to collapse. This is a form of simplification.

janvier 2023

En cette nouvelle année, il est indispensable de faire le bilan de la production d’électricité en 2022. Pour cela, nous comparerons l’Allemagne, souvent mise en avant par de nombreux politiques français pour son avance dans la transition énergétique, et la France, que ces mêmes politiques disent en retard. Attention, l’électricité ne représente que 20 à 25% de l’énergie consommée. De plus, l’empreinte carbone des habitants tient compte des importations (soit 50% pour un Français). Les émissions de CO2 présentées dans cet article ne concernent donc que celles liés à la production d’électricité.

décembre 2022

Caterpillar successfully demonstrates first battery electric large mining truck and invests in sustainable proving ground. Caterpillar Inc. (NYSE: CAT) announced a successful demonstration of its first battery electric 793 large mining truck and a significant investment to transform its Arizona-based proving ground into a sustainable testing and validation hub of the future.

décembre 2022

As automakers around the world set bold targets for vehicle electrification, many in the industry are looking to nickel — an integral component of most lithium ion batteries — as a major hurdle.

octobre 2022

Ember modelling of least-cost power system pathways reveals that a clean power system (70-80% wind and solar) by 2035 should be at the core of energy planning for a net-zero continent by mid-century.

juillet 2022

An all-electric future depends heavily on copper, and looming supply shortfalls could hamper nations’ goals of reaching net-zero emissions by 2050, according to a new report from S&P Global. Unless significant new supply becomes available, climate goals will be “short-circuited and remain out of reach,” the report says.

juillet 2022

The growing popularity of SUVs is making it even harder to cut carbon dioxide emissions and meet climate goals. “Policy-makers need to find ways to persuade consumers to choose smaller and more efficient cars,” says Petropoulos.
The electric car will be an important part of a green transition. But our main focus should be moving toward green collective mobility like public transportation and away from the dominance of personally owned cars.

mai 2022

April temperatures at unprecedented levels have led to critical water and electricity shortages

mars 2022

Later this year, Egyptian engineering firm Arab Contractors is expected to complete the construction of the Julius Nyerere dam on the Rufiji River. Once completed, the $3 billion dam could be Africa’s fourth biggest by power production, producing up to 5920GWH of power annually, enabling Tanzania to close the gap between those with electricity and those who have no access.
Lithium extraction fields in South America have been captured by an aerial photographer in stunning high definition. But while the images may be breathtaking to look at, they represent the dark side of our swiftly electrifying world.