Daily Brief — March 28: Grid, Code, Compute

The U.S. power grid is heading for a record year, Bitcoin's core software stack just hit two milestones in 24 hours, and a Google AI trick rattled the memory-chip trade. Here is what matters this Saturday morning.

What happened: U.S. developers plan to add 86 gigawatts of new power capacity to the grid in 2026 — a record — led by 43.4 GW of solar (up 60% from last year) and 24 GW of battery storage.

Why it matters: Texas alone accounts for 53% of planned battery additions. When one state dominates a national buildout that fast, the grid is being reshaped around a single market's incentives — which concentrates both opportunity and fragility.

So what: If these projects clear permitting and interconnection queues, 2026 becomes the year storage stops being a footnote and starts being load-bearing infrastructure.

What happened: Bitcoin Core v31.0rc2 — the second test release before the final software upgrade for Bitcoin's network nodes — was tagged March 25. Core Lightning v26.04rc1 followed March 26, introducing a 'splicein' command that lets node operators add funds to a payment channel without closing and reopening it.

Why it matters: Closing and reopening a Lightning channel costs on-chain fees and takes time. Splicing eliminates that friction, making it cheaper to keep channels liquid — which matters most for the routing nodes that keep payments moving.

So what: Two protocol upgrades in one week means the infrastructure layer of open payment rails is quietly getting more capable, even when no one is watching.

What happened: Google's 'TurboQuant' compression technology — software that reduces how much memory AI models need to run — reportedly rattled memory-chip stocks including Micron, according to Bloomberg and the Wall Street Journal.

Why it matters: Investors had treated AI memory demand as a near-certain winner of the AI buildout. A software optimization that cuts hardware requirements rewrites that assumption quickly.

So what: The AI stack rewards the layer that solves the bottleneck — and right now, software efficiency is catching up to hardware spending.

BY THE NUMBERS

86 GW — planned U.S. grid capacity additions in 2026, which would be the largest single-year buildout in U.S. history if realized.

1,004.5 exahashes per second — the current Bitcoin network hashrate, a measure of total computing power securing the network; the first time the figure has crossed 1,000 EH/s.

$1.5 billion — Shield AI's Series G raise at a $12.7 billion valuation, led by Advent International, for AI autonomy software used in GPS-denied military environments.

WHAT TO WATCH

Bitcoin Core v31.0 final release — expected within two to four weeks. When it ships, read the release notes for consensus changes and wallet updates; exchanges and self-custody operators will begin upgrading shortly after, and any surprises surface fast.

GENIUS Act proposed rulemaking — the U.S. regulatory framework for payment stablecoins could publish its formal rule proposal in the first half of 2026. For anyone building on open payment infrastructure, this sets the compliance floor for dollar-denominated digital payments in the U.S.