Energy & Climate
Fusion, solar, storage, and smarter grids — abundant clean energy as a solvable engineering problem.
State of the world · updated June 2026
Right now: fusion programs are reporting milestone plasmas and raising at scale, renewables are crossing share thresholds that strain old grids, and AI data-center demand has made cheap firm power the constraint everyone is racing to solve.
Start here · the primer
The wager here is that energy stops being scarce. The mechanism is a learning curve: the cost of clean generation and storage has fallen for decades, and a few step-changes — fusion crossing net energy gain, solar-plus-batteries undercutting fossil baseload, grids that route power the way a network routes packets — would tip abundance from forecast to fact. Everything in this megatrend is a consequence: reactors chasing first commercial plasma, the renewables share crossing thresholds that reorder the grid, and AI both driving demand (the data-center build-out) and designing the materials and controls that meet it. The question is timing — which curve bends first, and whether supply chains and the grid can absorb it.
Top finds
All finds →The stream, scoped to this megatrend. Your sort, not ours.
Overall = breadth + depth + substance + ½·novelty + freshness (a small boost that halves each week)
Gas got passed standing still
For one month — April 2026 — wind and solar together out-generated natural gas across the entire world's grids for the first time, 22% of global electricity to gas's 20%.
The halfway line that isn't
Renewables now make up 49.4% of the world's installed power capacity — but that counts hardware, not electricity, and only about a third of the electrons actually come from them.
The fusion scoreboard
Commonwealth Fusion Systems has started bolting in the 18 high-field magnets that the whole compact-fusion bet rides on — even as the company's own people quietly push the date for net energy from this year to next.
The nuclear site that runs on gas
The federal government is leasing a decommissioned Cold War uranium-enrichment plant in Ohio to SoftBank for what it calls the world's largest AI data center — to be powered not by reactors but by 9.2 gigawatts of natural gas.
98.6% paper
Data centers have asked Texas's grid for 410,618 megawatts of power — roughly five times the most the state has ever used at once — but ERCOT's own slides show almost none of it has begun a single study.
Concepts
All concepts →The ideas behind this megatrend — explained from the ground up.
Nuclear fusion
Energy released when light atomic nuclei join under extreme heat and pressure — the same process that powers stars.
Nuclear medicine
Using radioactive isotopes to image the body from the inside or destroy diseased tissue — diagnosis and treatment driven by how cells absorb and emit radiation.
Small modular reactors
Nuclear fission reactors designed to be built in factories and shipped to site, rather than constructed on-location at gigawatt scale.
Key entities
Discover all →The companies, people, tools and models doing the work — each scored on its own merits. Turn the dial.
Overall = breadth + depth + substance + ½·novelty
Companies
10ERCOT
The independent operator of the Texas power grid — a state-isolated interconnection covering ~90% of the state's electric load, run as a nonprofit overseen by Texas regulators.
▸ Grid operationCommonwealth Fusion Systems
An MIT spin-off building fusion power plants around high-temperature superconducting magnets, which let its tokamaks run far smaller than earlier designs.
▸ Clean baseload electricityTesla
American electric-vehicle and energy-storage maker now building autonomous-driving software and the Optimus humanoid robot, led by Elon Musk.
▸ Electric vehiclesARPA-E
The U.S. government's high-risk energy R&D agency, modeled on DARPA, funding early-stage technologies too unproven for private capital.
▸ Funding early stage energy technologyHelion Energy
A fusion-power startup building reactors that capture electricity directly from the plasma, skipping the steam turbine that conventional nuclear plants rely on.
▸ Grid electricitySHINE Technologies
Wisconsin fusion company using accelerator-driven neutron sources to make medical isotopes today, with waste recycling and energy generation as later phases.
▸ Medical isotope productionVerkor
French manufacturer of low-carbon lithium-ion battery cells for electric vehicles, building a Dunkirk gigafactory to supply European carmakers.
▸ Ev batteriesAES Corporation
Fortune 500 power company that builds, owns, and operates electricity generation — solar, wind, battery storage, gas, hydro — across roughly 15 countries, and runs regulated utilities in Indiana, Ohio, and El Salvador.
▸ Clean energy procurementStarcloud
A startup building solar-powered AI data centers in orbit, where sunlight is constant and waste heat radiates into space.
▸ Space based computePanthalassa
A Portland, Oregon company building autonomous floating buoys that generate power from ocean waves and run AI inference chips onboard, shipping the results to land by satellite instead of cabling the electricity ashore.
▸ Offshore ai computeProducts
2Linglong One
A 125 MWe integrated pressurized-water small modular reactor designed by China's CNNC, built at the Changjiang site in Hainan for electricity, heating, steam, and desalination.
▸ Land based small modular reactorMaximo
An AI-guided field robot that mechanically installs utility-scale solar panels, placing and fastening modules alongside human crews.
▸ Utility scale solar installationHow this connects
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