The US has made a significant breakthrough in fusion energy, with scientists at the National Ignition Facility (NIF) in California achieving net energy gain in a fusion reaction, meaning the reaction produced more energy than was input by the lasers. This marks a crucial step in proving the possibility of commercial fusion power. While this breakthrough is hailed as a major scientific feat, the article notes that the lasers used still drew substantially more energy from the electrical grid than the reaction generated. Furthermore, the NIF system is old and not designed for efficiency, currently capable of only one shot per day, whereas a commercial plant would require several shots per second and a reaction 30 to 100 times more energetic than the laser input.
Despite this scientific achievement, commercial fusion power plants are still decades away, with widespread reality not expected until the 2040s, and thus unlikely to significantly reduce emissions before 2050. The fusion energy sector has seen a surge in private investment, with companies raising almost $9 billion in private funding and an additional $795 million in public funding. Billionaires like Sam Altman and Jeff Bezos, alongside venture capitalists and investment arms of oil companies such as Eni and Chevron, have been key early investors. The Fusion Industry Association estimates that private fusion companies have raised at least $5 billion, with a significant portion in the last 18 months, and inertial fusion companies alone have raised about $180 million.
The article emphasizes the need for greater government support, comparing the investment required to a "new Manhattan Project." While some federal funding has been directed to fusion projects, including $280 million in the Inflation Reduction Act, the consensus is that billions of dollars more will be needed. The EU, for instance, is heavily invested in the International Thermonuclear Experimental Reactor (ITER) project in France, with initial construction costs estimated at €5 billion, now projected to reach up to €20 billion, with the EU responsible for 45% of the budget. Experts anticipate that the NIF breakthrough will encourage increased federal support in the US and similar policies in the UK, EU, and Japan, as policymakers gain confidence in the nascent sector.
