Advisory services include various stages audits of energy efficiency (energy audits, reviews and labels), as well as feasibility studies of energy saving measures, subsidy consulting and advisory activities in the implementation of major projects. At the international level, these services are participating in international consortia consulting with a broad focus.

Some of the above listed services are used dozens of customers from the public and the business community. Among the largest of these include the hometown of the town of Melnik, a number of municipalities in the South Region, now Avia Letňany, ESAB town of Jablonec nad Nisou and more.