By the term Small Hydroelectric Project, according to the Greek Legislation, we mean a hydroelectric project of installed capacity of up to 15 MWp. The operating principle of a typical small hydroelectric plant is based on the exploitation of the dynamic energy of surface water, initially converted to kinetic energy and then to electrical energy.


  1. Creation of water resource management plan that leads to a water license
  2. Formulation of a production license dossier at Regulatory Authority For Energy or submission of a study on connection terms to Public Power Corporation.
  3. Study of environmental terms and applications for approvals from various institutions
  4. Configuration of the folder for an installation license
  5. Submission of a technical and economic study to fund the project
  6. Conclusion of a network connection agreement
  7. License of the station



Z GROUP undertakes project that covers all the different stages of development of a project, including:

  • Market analysis and evaluation
  • Preliminary design
  • Resource potential measurements
  • Preliminary and feasibility studies
  • Find funding: prepare envelopes and monitoring
  • Technical studies-construction supervision
  • Project management and procurement services



Z GROUP and its Associates have extensive experience in designing and licensing Renewable Energy Sources, giving the prospective investor a clear picture of the investment they are interested in, investigating alternative economically viable investment scenarios, and supporting the customer in every step of implementation of the investment.

Z GROUP is certified to EN ISO 9001: 2008, ΕΝ ISO 14001:2015, OHSAS 18001:2007, ISO 22301:2012, EN ISO 27001:2013, ISO 50001:2011.