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Explainer: The Science of Nuclear Fusion

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Explainer: The Science of Nuclear Fusion

The Science of Nuclear Fusion

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U.S. scientists at the National Ignition Facility, part of the Lawrence Livermore National Laboratory (LLNL), announced a major breakthrough in nuclear fusion this week.

For the first time ever, scientists successfully produced more energy from a nuclear fusion experiment than the laser energy used to power it.

In the above infographic, we describe nuclear fusion and illustrate how this discovery may pave the future for a new form of clean and sustainable energy.

What is Nuclear Fusion?

Nuclear fusion powers the Sun and the stars, where immense forces compress and heat hydrogen plasma to about 100 million degrees Celsius. At this temperature, the lighter particles fuse into helium, releasing enormous amounts of energy.

Nuclear fusion is a fairly clean energy source as it does not produce harmful atmospheric emissions and only produces a small amount of short-lived radioactive waste.

Scientists have been trying to replicate it on Earth for almost 70 years, using isotopes of hydrogen—deuterium and tritium—to power fusion plants.

Since deuterium is found in seawater and tritium is attained through irradiating lithium (a common element used in batteries), the accessibility of these isotopes means that fusion could become a major source of energy in the future.

The amount of deuterium present in one liter of water, for example, could produce as much fusion energy as the combustion of 300 liters of oil.

Fusion fuel can replace these fuels

However, the real challenge is ensuring fusion power plants generate more energy than they consume.

The Challenge of Fusion Ignition

Fusion ignition is the term for a fusion reaction that becomes self-sustaining, in which the reaction creates more energy than it uses up. Up until now, scientists were only able to break even.

The National Ignition Facility used a special setup called inertial confinement fusion that involves bombarding a tiny pellet of hydrogen plasma with lasers to achieve fusion ignition.

LLNL’s experiment surpassed the fusion threshold by delivering 2.05 megajoules (MJ) of energy to the target, resulting in 3.15 MJ of fusion energy output, according to the U.S. Department of Energy.

Can Nuclear Fusion Energy Be Commercialized Soon?

In recent years, fusion technology has been attracting the attention of governments as well as private companies such as Chevron and Google. Bloomberg Intelligence estimates that the fusion market will eventually be worth $40 trillion.

Besides energy generation, fusion is expected to be used in other markets like space propulsion, marine propulsion, and medical and industrial heat.

However, according to the director of the Lawrence Livermore National Laboratory, Kim Budil, it will take “probably decades” before nuclear fusion energy is commercialized.

During the breakthrough announcement, she noted that it was necessary to produce “many many fusion ignition events per minute” as well as have a “robust system of drivers” before fusion can be commercialized successfully.

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Mapped: Renewable Energy and Battery Installations in the U.S. in 2023

This graphic describes new U.S. renewable energy installations by state along with nameplate capacity, planned to come online in 2023.

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Renewable and Battery Installations in the U.S. in 2023

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Renewable energy, in particular solar power, is set to shine in 2023. This year, the U.S. plans to get over 80% of its new energy installations from sources like battery, solar, and wind.

The above map uses data from EIA to highlight planned U.S. renewable energy and battery storage installations by state for 2023.

Total U.S. renewable energy and battery installations, broken down by share

Texas and California Leading in Renewable Energy

Nearly every state in the U.S. has plans to produce new clean energy in 2023, but it’s not a surprise to see the two most populous states in the lead of the pack.

Even though the majority of its power comes from natural gas, Texas currently leads the U.S. in planned renewable energy installations. The state also has plans to power nearly 900,000 homes using new wind energy.

California is second, which could be partially attributable to the passing of Title 24, an energy code that makes it compulsory for new buildings to have the equipment necessary to allow the easy installation of solar panels, battery storage, and EV charging.

New solar power in the U.S. isn’t just coming from places like Texas and California. In 2023, Ohio will add 1,917 MW of new nameplate solar capacity, with Nevada and Colorado not far behind.

Top 10 StatesBattery (MW)Solar (MW)Wind (MW)Total (MW)
Texas1,9816,4621,94110,385
California4,5554,2931238,970
Nevada6781,59602,274
Ohio121,91751,934
Colorado2301,1872001,617
New York585095591,125
Wisconsin4939921,034
Florida39780980
Kansas00843843
Illinois0363477840

The state of New York is also looking to become one of the nation’s leading renewable energy providers. The New York State Energy Research & Development Authority (NYSERDA) is making real strides towards this objective with 11% of the nation’s new wind power projects expected to come online in 2023.

According to the data, New Hampshire is the only state in the U.S. that has no new utility-scale renewable energy installations planned for 2023. However, the state does have plans for a massive hydroelectric plant that should come online in 2024.

Decarbonizing Energy

Renewable energy is considered essential to reduce global warming and CO2 emissions.

In line with the efforts by each state to build new renewable installations, the Biden administration has set a goal of achieving a carbon pollution-free power sector by 2035 and a net zero emissions economy by no later than 2050.

The EIA forecasts the share of U.S. electricity generation from renewable sources rising from 22% in 2022 to 23% in 2023 and to 26% in 2024.

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