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Corossony solar plant: 1,472 concrete footings surveyed at 2 mm per pixel before repowering
A 1:500 topographic plan of the plant in operation in September 2024, then the position and height of each of the 1,472 footings kept for the new structures, in December 2025.
Background
The Corossony photovoltaic plant, on the Saint-Élie road in Sinnamary, is operated by Albioma. In 2024 the operator wanted an up-to-date plan of the plant in operation. In late 2025 it began repowering it: modules and structures removed, only the foundations kept, i.e. 1,472 concrete footings of 50 × 50 cm spread over about 2 hectares, half of the 4-hectare fenced area. Before installing the new structures, the position and height of every footing had to be known.
What we did
On 5 September 2024 we produced a 15 mm per pixel orthophoto, then the 1:500 topographic plan: access tracks, contour lines, natural-ground spot heights, cadastre, fences, overhead cable trays, substations, basin, junction boxes, tables and modules, including the missing ones, with a photo record of the fences. For the repowering, Albioma put the priority on consistent heights from one footing to the next; absolute height was not required. We therefore chose a very-high-resolution photogrammetric survey without ground control points, committing to a mean relative height error of 1.5 cm. The flights took place in December 2025, once the area had been dismantled and cleared: a 2 mm per pixel orthophoto and one point drawn at the centre of each footing, with its coordinates and height, delivered on 23 December.
2 related missions in the log
Positions and elevations of the concrete footings of a solar plant
1,472 concrete footings surveyed over two hectares, once the modules and structures had been removed: 2 mm per pixel orthophoto, centre point and height of each footing in DWG and A0 plan delivered on 23 December.
- 1 472 footings
- 2 mm per pixel
1:500 topographic plan of the Corossony photovoltaic plant
On 5 September 2024: 15 mm orthophoto, then tables, modules, cable trays, fences, substations and contour lines drawn on the plan, with a photo report on the fences.
- 15 mm
- 1/500 plan scale
Gallery
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97310 Kourou
French Guiana
Route des Trois-Îlets
97229 Les Trois-Îlets
Martinique
20030-041 Rio de Janeiro – RJ
Brazil