Try these people. They are contractors for Endesa. Labour is charged at twenty Euro an hour and 15 Euro an hour for the labourer if required. (or quote for complete job)Their website is below and the mobile of their top man. He speaks fairly good English. He will attend your venue and give you a free quote. What have you to lose ? The thing also is He and his company are registered which helps if later on there are safety or insurance claim issues.

Carlos Mobile 626937101
Company number 977482174

Website......

http://www.matelfon.com/crbst_3.html

They are situated near the new Lidl in Deltebre just past the camp de football on the left heading towards Ruimar.At the Lidl roundabout turn left coming from Tortosa then sharp right going along the canal service track.

Or like below use a cowboy.