Credit: José Antonio Peñas (Sync)
Credit: José Antonio Peñas (Sync)

Adapted wind turbines could be installed under the largest bridges of the road network to produce electricity. According to calculations made by a team of Spanish and British researchers, this could be viable, they took the Barranco del Juncal viaduct in Gran Canaria (Spain) as a reference for their calculations. This concept could be applied in highly urbanized territories or natural areas with limitations for new construction.

The study is based on computer models and simulations carried out by researcher Óscar Soto and his colleagues at the University of Kingston (United Kingdom).

The more area the rotor covers, the more power can be extracted; however, they saw that in small turbines the ratio of power produced per m2 is higher. The configuration of two identical turbines would be the most viable to integrate into the viaducts, as a better balance is achieved, both from a structural and electrical point of view, which influences a lower economic cost.

In the case of the Juncal viaduct, the power would be around 0.25 MW for each turbine. Being two, they would total a total of 0.5 MW, which is classified in the range of medium power wind turbines. This would be equivalent to the average consumption of around 450 or 500 households, it would avoid the emission of around 140 tonnes of CO2 per year, the purification effect of around 7,200 trees.

Via The research was promoted by the Canary Islands company ZECSA.