Ryan McEntush

Critical minerals are physical inputs to AI, grids, batteries, data-center infrastructure, vehicles, and defense systems. Turner Caldwell’s mass-flow call is emphatic: “We need a lot of aluminum. We need an insane amount of copper. We need more iron. We need more zinc,” while lithium production capacity must roughly 4× over the next 10 years if planned batteries are to be built.

A mineral project is a site-specific chain from sub-1% ore to high-purity metal, not a fungible factory template. Ore bodies change grade and impurity mix as mining proceeds—“the Earth is heterogeneous”—so every flowsheet is bespoke and needs flexibility. That makes recovery and adaptability economically decisive because every lost atom must be mined again.

The venture thesis is to own the mine-to-refinery operating system because selling point technology into incumbent miners has become a “death spiral.” Multi-billion-dollar plants resist changes that might create multimillion-dollar downtime, pilots can miss commercial builds that arrive perhaps once every five years, and operators distrust outsiders touching their “cash register.” Mariana, emerging with $85 million raised, is betting vertical integration can capture efficiencies that point-solution SaaS vendors cannot capture on their own—but it also imports the partner’s risk into its expanded risk profile.

Mariana’s software bet targets two large sources of wasted time: a roughly three-week construction-information lag and refinery-control problems with about 1,000 interacting variables. Capital Project OS would automate engineering and procurement workflows; Plant OS would use reinforcement learning to optimize refinery operations, including recovery, energy, and reagents, across 24–48-hour feedback loops. Caldwell wants to remove humans from many operating decisions.

China’s moat is skilled execution capacity as much as policy or capital. Caldwell saw 13,000 people mobilized at a Chinese-backed Indonesian nickel refinery during construction and commissioning; a U.S. project might struggle to field one-tenth as many. Indonesia now supplies “something like 70%” of global nickel, illustrating how labor depth and downstream buildout compound geopolitical leverage.

The portfolio call is countercyclical: diversify, navigate frothy markets, and build at commodity troughs. In the rare-earth discussion, Caldwell calls the market “a little bit of a frothy market,” while focusing on lithium and regarding copper demand and declining grades as “pretty hard to ignore.” The operating bet is that software-controlled circuits can process lower-grade copper without meaningful cost inflation.

U.S. supply security needs faster exploration, permitting, and demand support. Exploration over more than five acres on federal land can require BLM approval, while price floors or fixed-price offtakes—like the cited MP Materials arrangement—could unlock infrastructure capital that will not underwrite commodity volatility. Mariana’s mission is concrete but hedged: build 10 increasingly large projects in 10 years, expand overseas and perhaps underwater, and restore confidence that complex minerals infrastructure can be built “cost-effectively, time-effectively and responsibly.”

🔗 Original source & video: The U.S. Can’t Build AI Without These Materials

America’s grid problem is institutional atrophy as much as physical capacity. Ryan McEntush says the system “effectively froze” in the early 2000s as manufacturing shifted to Asia, leaving operators without the workforce or skill to plan and execute large projects quickly or cheaply. David Ulevitch adds the stark comparison: U.S. per-capita energy use peaked in 1973, while China’s energy use increased ninefold over the same period.

Distributed generation and storage could leapfrog a grid where interconnection can take a decade and transformer backlogs reportedly exceed 20 years. David describes the grid as roughly century-old technology operating near capacity; Erin Price-Wright argues for placing solar, batteries and load together, bypassing some interconnection and delivery infrastructure whose costs keep rising even as generation gets cheaper. Data centers already embody the urgency: “I can’t afford to wait 10 years… I need this power now, today.”

Texas is the panel’s proof point for deploying cheap solar and batteries at speed. Erin says the state roughly doubled solar capacity in three years and added thousands of batteries, improving its ability to absorb sharp demand changes; Ryan argues every state should study ERCOT’s distributed model, while acknowledging that regulated markets make replication harder. Erin describes the manufacturing dependence on China, while David warns that losing Chinese battery supply “could be catastrophic… in a very, very short period of time.”

The winning energy mix is “yes, and,” not a single-resource bet. Erin’s personal bet is that solar and batteries will remain cheap and fast, but she says gas, nuclear, geothermal and hydro will remain necessary because the long-tail cost of intermittency becomes severe once variable resources reach roughly 50%-75% of the grid. Her broader point is about load design: expanding data centers, EVs, heat pumps and autonomy will enlarge both baseload and daily peaks, so the system must not oversolve for either.

Flexible compute is a more plausible demand-response asset than centrally controlling Americans’ thermostats. David says consumers will “flatly reject” dictated indoor temperatures, while Erik points to crypto mining and David suggests shifting noncritical data-center jobs to cheaper hours. David also pushes back on Erin’s view that data-center demand may be overstated, arguing society may instead be underestimating AI electricity consumption across the next 10-50 years.

Grid software is the clearest venture-scale layer in an otherwise capital-heavy rebuild. Erin explains that the grid lacks the internet’s bidirectional communication, data layer and control plane; David argues that software should enter from the edges rather than through a slow top-down utility rollout. The grid lacks “no Splunk,” “no Palo Alto Networks” and “no Looker,” while bottom-up telemetry from batteries, chargers and distributed generation could improve forecasting that still relies heavily on weather. Erin says AI could also turn permitting work performed by armies of consultants over months or years into “minutes or hours.”

Nuclear combines baseload, resilience and defense value, but scaling it requires rebuilding America’s megaproject muscle. David highlights Radiant Nuclear’s proposed 1-megawatt, truck-transportable microreactor and separately imagines transportable reactors being flown on C-130s. He contrasts that flexibility with military fuel that can cost more than $200—and sometimes $400—per gallon to deliver. The closing priorities are categorical: Ryan says there is no safety, national defense or national security without a reliable electrical grid; Erik says energy policy should prioritize power that is “cheap, reliable and clean—in that order.”

🔗 Original source & video: America’s Energy Problem: We Need A New Grid