Reindustrialization

711 companies building in energy, materials, factories, chips, space, defense and more, grouped by sector. Tap a sector to open it. 542 link to a confirmed X account. Tags show which directory or record lists each company, and every source is credited below.

Founders, investors and companies around Black Flag, an accelerator for American hard tech, and Harpoon Ventures.

• Black Flag @BlackFlagVCAccelerator funding American hard tech
• Harpoon Ventures @HarpoonVenturesVenture firm investing in national security and industrial tech
• Matt Loszak (Aalo Atomics) @MattLoszakAalo Atomics, building factory-made nuclear plants
• Aaron Slodov (Atomic Industries) @aphysicistAtomic Industries, factory automation
• Gill Verdon (Extropic) @GillVerdExtropic, energy-efficient computing hardware
• Beff Jezos (Gill Verdon's e/acc alias) @beffjezosGill Verdon's other account, writing on energy abundance
• John Gedmark (Astranis) @GedmarkAstranis, satellites built in the US
• AJ Piplica (Hermeus) @AJ_PiplicaHermeus, hypersonic aircraft
• H.R. McMaster @LTGHRMcMasterFormer national security advisor, writes on supply chains and security
• Tyler Sweatt (Second Front) @Tyler_SweattSecond Front, defense software
• Dan Magy (Firestorm Labs) @DanMagyFirestorm Labs, mobile drone factories
• Aalo Atomics @AaloAtomicsFactory-built nuclear power plants
• Astranis @AstranisSatellite manufacturing
• Hermeus @hermeuscorpHypersonic aircraft
• Ursa Major @ursamajortechRocket engines and solid rocket motors made in the US
• Extropic @extropicLow-power chips for AI
• Firestorm @Firestorm_LabsField-deployable manufacturing

The company directory above draws on BuildList, a directory of companies building in hard tech, made by Christian Keil (@pronounced_kyle). Browse it for founders, funding and open roles.

The company directory is built from these public lists and records. Each company carries a tag for every source that lists it.

• BuildList by Christian Keil 599 companies
• Touch Metal US supply chain directory 143 companies
• a16z American Dynamism 50 (2025) 49 companies
• LA Hard Tech 50 (2025) by Jacques Sisteron and Nick Kim 49 companies
• X Tech Signal source registry 21 companies
• US Department of Energy Reactor Pilot Program 10 companies
• CHIPS for America awards (NIST) 11 companies
• Founders Fund portfolio 14 companies
• Lux Capital portfolio 7 companies
• Black Flag and Harpoon Ventures 11 companies
• Long Haul Ledger US stories 39 companies
• Long Haul Ledger explainers 10 companies

• What Alaska LNG Becoming a Federal Project MeansAlaska LNG was called a federal government project in October 2026. What is confirmed, what is still being negotiated, and the steps left to building it.
• Microreactors on Army Bases: What Happens NextThe Army picked five companies and five bases for small nuclear reactors in August 2026. Here is the timeline, how the money works, and the steps ahead.
• Copper World: From Approval to First Copper in 2029Hudbay and Mitsubishi approved building the Copper World mine in Arizona on October 21, 2026. The steps from here to first copper in the second half of 2029.
• The Factories Growing Now Are the Ones Plugged InUS factory output is up 1.1% in a year, but chip output jumped and utilities output rose 8.7%. What the Fed's September 2026 data shows, in plain words.
• Why Fervo's 33-Megawatt Utah Geothermal Plant MattersFervo's first Cape Station unit in Utah began selling 33 megawatts of round-the-clock power on Sept 30, 2026. What enhanced geothermal is and what comes next.
• Why Gas Prices Don't Follow Oil Prices Right AwayCrude oil is about half the price of a gallon of gas. See what makes up the rest, why pump prices lag wholesale prices by weeks, and how diesel can move on its own.
• Inola and Tulsa Ports: How the Smelter Dispute Can Be SettledTulsa Ports voted to sue Inola over its pause on industrial permits at the Port of Inola. What the dispute is about and the paths to settling it.
• Iowa's Pay-on-Performance Steel Mill Incentives, ExplainedIowa changed its MEGA program so a $15 billion Lee County steel mill can earn tax credits worth up to 10% of its investment, but only after it builds and hires.
• Why Your Power Bill Is Rising: Data Centers Are One PartUS home power prices are forecast to rise about 5% in 2026. Data centers add demand, but grid upgrades and fuel costs matter too. Plain answers, sourced.
• Sparrows Point Returns to Shipbuilding With a Submarine YardAnduril plans a $3.7 billion submarine parts shipyard at Sparrows Point near Baltimore, with 3,100 jobs and operations set for 2030. What it will build and why.
• The Transformer Shortage Sets the Pace of BuildingBig grid transformers now take two to three years or more to arrive. Why, how it slows new power and factories, and the new US plants being built to fix it.

Government data, official notices and company releases behind the explainers and daily coverage.

• Short-Term Energy Outlook: Electricity, coal and renewables US Energy Information Administration, data
• Retail Electricity Price Trends and Drivers: 2026 Edition Lawrence Berkeley National Laboratory and Brattle, report
• Data Centers and the Electricity Grid: FAQ (R49326) Congressional Research Service via EveryCRSReport, report
• Data center boom expected to raise electricity component of PCE inflation Federal Reserve Bank of Dallas, report
• Have Data Centers Raised Your Electric Bill? (arXiv 2606.19777) arXiv (Watten, Bistline, Blanford), report
• Hitachi Energy breaks ground in South Boston, Virginia Hitachi Energy, release
• Siemens Energy will expand operations in Mecklenburg County Mecklenburg County, release
• Siemens Energy is investing $1 billion in the US Siemens Energy, release
• Eaton invests in new South Carolina transformer manufacturing site Eaton, release
• Fervo Energy declares commercial operation at Cape Station Fervo Energy, release
• Fervo Energy achieves First Power at Cape Station Fervo Energy, release
• Enhanced Geothermal Shot FAQ US Department of Energy, report
• Army reaches agreement with private industry for nuclear micro-reactors US Army, release
• Army announces Janus Program for next-generation nuclear energy US Army, release
• Fort Campbell selected to host Next-Generation Advanced Energy Resilience Project (26-012) US Army Garrison Fort Campbell, release
• What is a Nuclear Microreactor? US Department of Energy, Office of Nuclear Energy, report
• Taiwan is nearing an investment in the trans-Alaska natural gas pipeline project Alaska Beacon (States Newsroom), report
• Glenfarne welcomes $50 billion-plus U.S.-Korea investment for Alaska LNG Glenfarne, release
• Alaska LNG Project semi-annual report, Docket 14-96-LNG Alaska LNG Project LLC to US DOE, filing
• Anduril Industries to invest $3.7B, create over 3,100 jobs with new shipbuilding facility Maryland Department of Commerce, release
• Anduril, U.S. Navy invest $6.6 billion to expand America's submarine industrial base Anduril, release
• Industrial Production and Capacity Utilization, G.17 (Oct 16, 2026) Federal Reserve Board, data
• Value of private construction put in place, SAAR (August 2026 data) US Census Bureau, data
• Monthly construction spending, August 2026 (CB26-158) US Census Bureau, data
• Has the investment boom expanded U.S. productive capacity? Federal Reserve Bank of Kansas City, report
• Board of Directors regular meeting agenda, Oct 15, 2026 City of Tulsa-Rogers County Port Authority, filing
• Drummond asks DEQ to revise proposed rules, continues fight against Inola aluminum smelter Oklahoma Attorney General, release
• Hudbay and Mitsubishi Approve Copper World Project Construction Hudbay Minerals, release
• Gov. Reynolds signs legislative amendments to MEGA program paving way for historic $15 billion steel mill Office of the Governor of Iowa, release
• Iowa Administrative Code chapter 261-67, MEGA program Iowa Legislature, regulation
• Gasoline Pump Components History US Energy Information Administration, dataset
• Gasoline and Diesel Fuel Update (Oct 20, 2026 release) US Energy Information Administration, dataset
• Factors affecting gasoline prices US Energy Information Administration, explainer
• Gasoline Price Pass-through (Burdette and Zyren, January 2003) US Energy Information Administration, research
• Hybrid sales rise while battery electric sales remain lower after tax credit expiration (Today in Energy 68325) US Energy Information Administration, data
• Singapore Conducts World's Largest Ethanol Bunkering Operation Maritime and Port Authority of Singapore, release
• EBRD backs largest solar PV project in Egypt and Africa European Bank for Reconstruction and Development, release
• Chairman Jovanovic Signs Letter of Support for NioCorp's Elk Creek Mine Export-Import Bank of the United States, release
• Public Comment Period and Public Participation Opportunities for Monarch Cloud Campus (air permit R14-0042) West Virginia Department of Environmental Protection, official notice
• Ameren Missouri takes next step to support reliable energy for customers Ameren Missouri, release