This study presents an overview of Underground Heat Storage and Ground Source Heat Pumps situation and activities of Turkey. Shallow geothermal installations started in the early 2000s with Ground Source Heat Pump (GSHP) systems for small houses. In the last five years, shallow geothermal energy applications have been increasing with large shopping malls, governmental building and schools. The national expert group on shallow geothermal energy has been established as part of International Energy Agency Energy Conversation Through Energy Storage (IEA ECES) Annex27 "Quality Management in Design, Construction and Operation of Borehole Systems". The purpose of this group is to increase awareness, to prepare guidelines, carry out training programs and determine market barriers and suggest actions needed to speed up the success of shallow geothermal applications in Turkey. This paper will give an overview of the current status of UTES and GSHP systems in Turkey and activities of national Annex27 experts group.