helar

Helar is a term used predominantly in speculative fiction to denote a substance, resource, or concept serving as a source or conduit of energy. Because helar appears in multiple works with different details, there is no single canonical definition. In many narratives, helar is a crystalline or metallic material with high energy density that can be mined, refined, and assembled into power systems or propulsion devices. It may be described as radiating light or heat and often requires specialized containment or regulation due to its energetic properties.

Etymology is uncertain; the word appears to be an invented term likely inspired by "heli-" for sun or light, but some authors supply overt fictional etymologies within their worlds.

Within fiction, helar can function as a currency, a strategic resource in interstellar politics, or a critical component in weapons or consoles. Some portrayals emphasize ecological or logistical issues of extraction, transport, and storage, while others focus on the science and engineering possibilities. Numerical and qualitative properties—such as energy density, stability under varying temperatures, and vulnerability to specific inhibitors—are defined by the author and may change across series or installments.

In practical terms for readers, helar serves as a flexible worldbuilding device that can stand in for various real-world concepts like energy crystals, fusion fuel, or phased matter, depending on the story's needs.

See also: energy crystals, fictional minerals, power source.