Technology & Innovation

  • Underground Flywheel Energy Storage for Wind and Solar Integration — Qnetic’s new flywheel energy storage system is designed for largely underground deployment, offering aesthetic advantages alongside potential for lower costs, longer duration storage, and reduced reliance on overseas supply chains. The technology targets grid-scale support for wind and solar integration, a clear fit for mechanical and systems engineers working on rotating machinery, structural design, and grid-interconnection challenges.

Open Source Projects

  • Loganair Orders Five BETA Technologies ALIA CX300 Electric Aircraft for Regional Routes — Scotland’s Loganair has committed to purchasing five ALIA CX300 electric aircraft from BETA Technologies for short-haul routes of 100 miles or less. This represents a real-world deployment of fixed-wing electric aviation for regional airline operations, giving propulsion and power systems engineers a concrete reference architecture for commercial electric flight.
  • Sherco Coal Plant Conversion to Solar, Batteries, and New Transmission — The Sherco coal generating station in Minnesota is being converted to a solar-plus-storage facility with a new transmission line to deliver clean energy. This case study demonstrates a complete coal-to-renewables transition at an existing plant site, reusing existing grid interconnection infrastructure and offering electrical and grid engineers a tangible example of repurposing legacy power assets.

Today’s Synthesis

The common thread across Qnetic’s underground flywheel storage and the Sherco coal plant conversion is grid interconnection reuse — the hardest, slowest part of deploying new storage. Sherco demonstrates the playbook: keep the substation, transformers, and transmission rights; swap the generation. Flywheels fit this same model but with distinct mechanical advantages: 20+ year cycle life without degradation, no thermal runaway risk, and domestic supply chains for steel and composites. For mechanical and systems engineers, the actionable path is designing flywheel modules that standardize on retired plant voltage levels (13.8–34.5 kV) and footprint constraints (turbine hall floors, cooling water access). The Loganair/BETA electric aircraft order extends this pattern to airports: many sit on former military bases with robust grid connections. A flywheel buffer at an airport substation could absorb 500 kW–2 MW aircraft charging pulses without demand charges or distribution upgrades — same mechanical package, different site. The engineering challenge across all three: standardize the grid-side power conversion and controls so the rotating mass becomes a plug-compatible storage block for any brownfield interconnection.