Wireless Power: Why We Still Can't Cut the Last Wire

A phone charges on a pad with no cable. A lamp across the same room still needs a wire. This video asks why nobody has closed that gap, and follows the physics, the failed century-old attempt, and the real tests now pushing wireless power further than ever.

It starts with Nikola Tesla, whose 1901 Wardenclyffe Tower is usually remembered as a failed wireless-power project - but the financier J.P. Morgan actually funded a wireless communications station, not power transmission, and it was Tesla's own, later decision to add power beaming to the plan, without telling Morgan, that helped end the funding in 1906.

The video then explains the two different physics problems hiding inside "wireless power": near-field magnetic induction, the short-range trick behind every Qi charging pad, whose power falls off with the cube of distance; and far-field radiative beaming - microwave or laser - which falls off more gently with the square of distance, but only works if the beam is tightly focused and aimed.

Two 2025 ground tests show how far that focusing has come: NTT and Mitsubishi Heavy Industries sent a laser beam one kilometre across an airport runway in Japan at fifteen per cent efficiency, while DARPA's POWER program beamed more than 800 watts across 8.6 kilometres of New Mexico desert. Caltech's 2023 SSPD-1 mission went further still, proving a satellite could beam detectable power down to a rooftop receiver on Earth - a tiny, unquantified amount, but the first of its kind.

That demonstration is now driving real investment: Meta has reserved up to 1 gigawatt of future capacity from the US venture Overview Energy, the Luxembourg-based TerraSpark has raised funding toward its own 2027 orbital demonstrator, and a February 2026 UK government study has proposed siting satellite receivers at existing offshore wind farms to reuse their grid connections. But a named skeptic and the UK's own cost modelling both land on roughly the same answer: not cost-competitive before around 2040, and only with cheaper launches, lighter orbital hardware and far more efficient receivers all improving together.

Every figure in this video is traced to a named, dated source in the production fact sheet.

Educational documentary. Not financial or investment advice.