Mount PV beside or above transport and water corridors, not on the running surface

Mechanism

Instead of embedding PV in the surface vehicles use, mount conventionally tilted, air-cooled panels on the adjacent real estate a corridor already occupies: highway slopes, medians, and cuttings; canopies roofing a road or bike lane; tunnel and service-area roofs; noise-abatement walls; and structures spanning irrigation canals. Canal covers add a co-benefit — shading the water cuts evaporation.

Why it works

The corridor supplies committed, grid-adjacent land that greenfield solar lacks, but the panels retain every property that makes PV cheap: correct tilt, natural cooling, rain-cleaning, standard mounting, and maintenance access with no traffic interaction. It is essentially ordinary solar sited on corridor land, so it inherits conventional solar economics rather than inventing a new cost curve.

Operating profile

• Commodity modules and racking — no bespoke traffic-rated glazing — so cost-per-kWh tracks conventional utility or C&I solar.
• Output per installed watt matches standard ground-mount because orientation is preserved.
• Deployable now; several road and rail operators already run adjacent solar, noise-barrier PV, and canal-top arrays.

Limits

• Not zero-land — uses the corridor buffer/right-of-way, so that adjacent strip must be available and unshaded.
• Structures cost money — canopies and canal-spanning frames add steelwork, though far less than road-embedded PV.
• Site-by-site variation — embankment aspect, self-shading from the corridor, and cleaning access differ per location.