Alois Haselbacher GmbH was founded in 1985 and is a traditional, regional family business and apprenticing company for plumbing. It is organized in three departments: (1) classical plumbing business, (2) building of district heating systems and (3) data technology. Currently 14 employee are working at the company. Alois Haselbacher GmbH. deals since several decades intensely with innovative heating solutions especially considering renewable energy and sustainable technology. The planning and construction of district heating plants and networks is since 2010 a very important area of the company. Our data technology is busy with the development of specific control technical solutions for the operators of district heating plants. As owner of two district heating plants combines Alois Haselbacher GmbH several competences concerning planning, construction, operating and optimization of highly effective plants. Data technology is busy with three areas: (1) the development of control technical solutions for unique requirements, (2) the planning and execution of district heating networks in order to link control technology in highest quality, (3) the reunification, administration and preparation of data (database architecture).