Sustainability
Off-grid solar costs at three household scales, with DIY versus professional pathways, LFP versus lead-acid economics, and a full risk analysis.
Maritime
A 90–100 MWh shipboard BESS paired with solar container roofs could support port charging, shore power, and grid resilience.
DIY
Full open-hardware build: ultrasonic stage sensing, LiFePO4 pack, and the dev-board parasitic draw that wastes 89% of a node's daily energy.
Communications
The Zephyr is a solar drone that flies at 70,000 feet for months at a time. Here is what it does, who operates it, and whether it will reach market.
Smart City
Perovskite-silicon tandem solar is entering BIPV markets, but cost, lifetime (T80), and policy will determine real adoption.