Synchronized battery software linked to a one-minute grid frequency wobble

Five technology items from October 27 to 30, 2026, most of them about the batteries and power electronics between the grid and data centers: who builds them, who owns the patents, and what they do to grid frequency.

Synchronized battery software linked to a one-minute grid wobble

Grid frequency in 12 power systems on five continents carries a persistent oscillation with a period of exactly one minute, and a paper published in Nature Energy on October 30, 2026 traces it to software. The Forschungszentrum Jülich team, with co-authors at TenneT and the Karlsruhe Institute of Technology, reports that clock-synchronized control software in digitally controlled energy devices, particularly uninterruptible power supplies (UPSs) and battery energy storage systems, generates periodic power-demand peaks that propagate across voltage levels and can give rise to the pattern.

The evidence came from the authors' own campus, where four buildings showed a pronounced one-minute signal in their power demand; all of them contain battery-based UPSs, and none of the measured buildings without UPS installations showed the pattern. In one, the manufacturer confirmed that narrow current peaks recurring every minute at the battery terminals were periodic self-tests run by the battery's energy management system. The equipment installed to shield computers from the grid is, in aggregate, nudging the grid.

The effect is small per device and not small in sum. In the Continental European grid, a 3 mHz periodic frequency swing corresponds to a coherent power variation of about 80 MW, by the paper's estimate. In Ireland, where data centres reached about 18% of national electricity demand in 2022, the minute-scale frequency drop grew from about 3 mHz to 12 mHz between 2016 and 2021. Scandinavian amplitudes regularly exceeded 10 mHz, raising concerns about wear on hydropower turbines; after transmission operators tightened frequency containment reserve requirements in 2023, amplitudes above 10 mHz were no longer observed in 2025. Those rules mainly damp the grid's response rather than the source, the paper says. After the authors contacted the manufacturer, a software update removed the strict periodicity of the current peaks in one battery block of the UPS they studied; self-tests still occur at discrete times, so the root cause has been resolved only partially.

DOE launches a four-lab battery manufacturing accelerator

DOE's Office of Critical Minerals and Energy Innovation announced on October 28, 2026 the Battery Manufacturing Accelerator, BattMan, a consortium meant to move advanced battery technologies from laboratory discovery to domestic manufacturing. Pacific Northwest National Laboratory leads it, with Argonne, Oak Ridge and the National Laboratory of the Rockies, and PNNL's project page lists five university partners, including the University of Washington and Arizona State University.

The pitch is software for the factory floor. Over time, DOE says, the consortium aims to develop self-optimizing manufacturing systems that combine real-time process monitoring, "super intelligence" (SI), digital twins and closed-loop control. NLR says its researchers will build physics-based machine learning models of how specific defects and heterogeneities might affect cell performance years into the future. None of the three announcements gives a budget.

Enphase steps 13.8 kV AC down to 800 VDC

Enphase Energy said on October 27, 2026 that it had demonstrated its IQ Solid-State Transformer converting 13.8 kV AC to 800 VDC at its R&D lab in Austin, Texas. The test system used 132 power modules, 44 in series on each of three phases, and Enphase says the 800 VDC output held stable through load steps simulating the fast-changing demands of AI compute racks.

The design is microinverter thinking at medium voltage. Each module is rated at 5.5 kW and handled a few hundred volts, so no single module saw the full 13.8 kV; the modules use components and manufacturing processes similar to those in Enphase's microinverters. The 132 modules add up to 726 kW of module rating by our arithmetic, and the release states no output power for the test itself: Enphase expects to demonstrate full-system racks at megawatt scale and rated power before the end of 2026, with customer pilots planned for 2027. The transformer also opened the highlights of Enphase's third-quarter results, released the same day.

First Solar licenses CubicPV's US perovskite patents

First Solar has signed a non-exclusive license to CubicPV's issued and pending US patents covering perovskite solar technology, the companies announced on October 29, 2026. The license applies to sales and distribution of First Solar's perovskite devices in the US; other terms were not disclosed. First Solar runs a perovskite development line at its Perrysburg, Ohio campus and is investing in a larger pilot line in Ohio, able to make modules equivalent in dimensions to its Series 6, that it expects to reach operational readiness in the first half of 2027.

First Solar wants the rights settled before it scales. "It takes the technology development and manufacturing scaling work our R&D teams are focused on, and it takes freedom to operate, which is what this agreement helps secure," said chief executive Mark Widmar.

Draslovka buys the ex-Natron sodium-ion patents

Covoro Mining Solutions, the US subsidiary of the chemicals group Draslovka, has agreed to acquire the intellectual property portfolio in Prussian Blue and Prussian White Analogue sodium-ion battery technology originally developed by Natron Energy, Draslovka announced on October 29, 2026. The portfolio spans issued and pending patents, trademarks and manufacturing know-how from active-material synthesis through complete battery systems. The deal covers intellectual property and intangible assets only, and CFIUS granted clearance as a condition to closing; the release gives no price.

The buyer already makes the ingredient. Draslovka describes itself as the world's leading producer of sodium cyanide and of the ferrocyanide feedstocks at the heart of these materials, and with Altris it is starting up a Prussian White Analogue cathode line at Kolín in the Czech Republic. It calls cell and system manufacturing the remaining step to scale, which Covoro and the group intend to develop with selected partners. The deal follows Peak Energy's $108 million Series B for sodium-ion grid storage by eight days.