✦ Energy at AI Scale: the MegablockNarrow moat
Tesla (TSLA) — the future bets
The quiet bet already bills — grid batteries for the gigawatt era, sold by the Megablock to the AI build-out, no autonomy approval required.
While the loud bets rehearse, the energy business compounds: energy generation and storage revenue grew 27% to $12.8 billion in 20251, and storage deployments reached 46.7 GWh, from 14.7 GWh two years earlier2. The Megablock — four Megapacks built around a single transformer — is aimed at utilities and data centers, and the customer list makes the point vividly: SpaceX bought $329 million of Megapacks in the first half of 2026, $295 million of it in the second quarter, to help power its Colossus data centers near Memphis3.
The thesis is that every gigawatt of AI compute needs storage beside it — for grid arbitrage, ride-through and power quality. Tesla's Megapack factories in California, with 40 GWh of installed capacity, and Shanghai, with 20 GWh, give it manufacturing scale4 in a market where the competition, above all the Chinese cell makers, is fierce and margin-hungry. This is the future bet with the least narrative and the most invoices: it needs neither autonomy approved nor robots working. The quarters are lumpy — 13.5 GWh deployed in the second quarter of 2026 against 8.8 GWh in the first5 — so watch deployments over a full year, storage margins against the Chinese price curve, and data-center customers appearing by name.
Widening on invoices: +27% to $12.8B, the Megablock product launched for data-center scale, and SpaceX writing nine-figure checks. The Chinese cell makers guarantee the margins stay contested — but this is the one future bet compounding without a single permission slip.
The quiet bet bills already: storage grew 27% to $12.8B, the Megablock packages 20MWh per cluster for data-center scale, and the AI build-out is writing nine-figure checks. No approvals required, no robots needed — watch deployments holding above 25% growth and margins against the Chinese cell-price curve.
Source: CNBC — SpaceX Megapack purchases ↗- ReportedEnergy generation and storage revenue grew 27% to $12.8 billion in 2025.Tesla, Form 10-K FY2025 (revenue $94.8B, -3%; net income $3.8B; automotive revenue -10%; energy generation & storage ~$13B, +27%) — FY2025 · publ. Filed early 2026 · source ↗
- ReportedStorage deployments reached 46.7 GWh in 2025, from 14.7 GWh in 2023.Tesla, Q4 2025 update (five-year table: deliveries 936,222 / 1,313,851 / 1,808,581 / 1,789,226 / 1,636,129 for 2021-2025; storage deployed 46.7 GWh in 2025; quarterly regulatory credits and net income, incl. Q1 2025 credits $595M against net income $409M) — FY2025 / Q4 2025 · publ. Jan 2026 · source ↗
- ReportedSpaceX bought $329 million of Megapacks in H1 2026, $295 million in Q2, for its Colossus data centers.CNBC — SpaceX bought $295M of Tesla Megapacks in Q2 2026 and $329M in H1 2026 to help power its Colossus data centers in the Memphis area; a Megablock combines four Megapacks around one transformer — H1 2026 · publ. Aug 5, 2026 · source ↗
- ReportedMegapack installed capacity is 40 GWh in California and 20 GWh in Shanghai.Tesla, Q2 2026 update (record revenue $28.2B, +26%; record Q2 deliveries of 480,126; automotive $20.5B, +23%; energy $3.14B, +13%; operating margin 1.4%; free cash flow -$1.1B; regulatory credits $146M; Robotaxi live in seven metros; installed capacity table) — Q2 2026 · publ. Jul 2026 · source ↗
- ReportedTesla deployed 13.5 GWh in Q2 2026 against 8.8 GWh in Q1.Tesla, Q2 2026 update (record revenue $28.2B, +26%; record Q2 deliveries of 480,126; automotive $20.5B, +23%; energy $3.14B, +13%; operating margin 1.4%; free cash flow -$1.1B; regulatory credits $146M; Robotaxi live in seven metros; installed capacity table) — Q2 2026 · publ. Jul 2026 · source ↗