Jadoo Power Systems has developed fuel cells for professional TV cameras. When the cost of a missed shot is high, reliable long term power is imperative.
Jadoo's NAB II system--which consists of a recharger and filling unit, two four-inch gas canisters, and a fuel cell that converts hydrogen to energy and attaches to the camera--costs $3,000. Two four-inch gas canisters will provide four to eight hours of power, depending on the camera. Hydrogen runs about $50 a year
They are being deployed by the Sinclair Broadcast Group:
Sinclair Broadcast Group, an investor in the company, is retrofitting the news crews in its 62 stations to adopt the hydrogen fuel cells.
Link via ZDNet
