ETA-Florence Renewable Energies | 5,344 followers on LinkedIn. Engage ETA Florence Renewable Energies to optimise the success of your green project. | Engage ETA Florence Renewable Energies to optimise the success of your green project. ETA Florence has long believed that environmental challenges can be transformed into market opportunities. As such, for over 26 years, ETA Florence has been offering private and public clients: • Strategic consulting.