ALTERNA
In 2019, ALTERNA signed €800k of contracts with the City of Paris (maximum amounts).
Source: the City's contract list (opendata.paris.fr) and the DECP (data.gouv.fr), data as of 29 September 2026.
Alterna Énergie
registered office in Poitiers (86000) · headcount 1 or 2 employees · founded in 2005 · SIREN 483339156 · view on annuaire-entreprises.data.gouv.fr ↗
€800k
in contracts signed with the City in 2019, at their maximum amounts
The contracts signed
Largest first.
Acheminement D'électricité lot 4 HVEsigned on 11 Sept 2019€800kMaximum contract amounts: what the City paid the company, contract by contract, is not published. A shared lot shows the whole lot’s amount. Source: City of Paris, DECP.