Abstract: A distributed hydrogen generating fence is formed from a plurality of electrolysis units and fence posts. Each unit includes one or more PV cells, an associated electrolysis system powered by electricity generated by the one or more PV cells, and a feed header for feeding water and an electrolyte to the electrolysis system. The electrolysis system is inside the feed header, and is operable to produce hydrogen and oxygen. The units are located between and are supported by mutually adjacent fence posts. The feed header extends in an inclined manner between the mutually adjacent fence posts. A gas header conducts at least the hydrogen from each of the plurality of units to a first remote facility. The fence includes openings allowing the passage of animals, people or vehicles. The openings can be controlled by a gate, or a grate laid across a hole in the ground spanning the opening.

Abstract: A distributed hydrogen generating fence is formed from a plurality of electrolysis units and fence posts. Each unit includes one or more PV cells, an associated electrolysis system powered by electricity generated by the one or more PV cells, and a feed header for feeding water and an electrolyte to the electrolysis system. The electrolysis system is inside the feed header, and is operable to produce hydrogen and oxygen. The units are located between and are supported by mutually adjacent fence posts. The feed header extends in an inclined manner between the mutually adjacent fence posts. A gas header conducts at least the hydrogen from each of the plurality of units to a first remote facility. The fence includes openings allowing the passage of animals, people or vehicles. The openings can be controlled by a gate, or a grate laid across a hole in the ground spanning the opening.

Abstract: A single person hoist for use in a derrick (2), including a motive device (4), a suspension cable connected to said motive device, and from which the person is suspended by suspension means (4) and a control means for operating the motive device, wherein the control means is operable by the person whilst suspended from the suspension means.