Alt studied from 1960 to 1963 at a School of Electrical Engineering, and subsequently became an engineer at Rheinischen Licht- und Kraftwerken GmbH, or Rheinische Light and Power Plants GmbH (RLK). After further studying electric engineering at RWTH Aachen, he attained his Doktor der Ingenieurwissenschaften in 1975.
Since 1975 he worked at RWE AG, now RWE Rhein-Ruhr AG, a subsidiary of RWE Energy AG. RWE is one of Europe's five leading electricity and gas companies, and the number one producer of power in Germany. Alt worked his way up, first as an engineer for special projects, and then as the Director of Contracts and Tarriffs (which later became the department of wholesale marketing) in 1980. In 1999, he became the Head of supply management in the Düren sales office.
In 1993, he was appointed an honorary professor at the University of Aachen by the Minister for Science and Research of NRW. He is also an honorary judge at the Social Court in Aachen. 
Stance on Climate Change
[Pending further investigation.]
“The EEG [German Renewable Energy Act] is anti-competitive and should be replaced by a simple legal warden investment promotion measures for the different types of systems and then withdrawn.” 
November 23 – 24, 2018
Helmut Alt was listed on the program for the 12th conference of the European Institute for Climate and Energy (EIKE), also billed as the Heartland Institute's 13th International Conference on Climate Change (ICCC13). According to a translation of the agenda, Alt spoke on “Energy transition between desire and reality” on November 23. 
November 30 - December 1, 2012
Helmut Alt was a speaker (PDF) at the Eighth International Conference on Climate Change (ICCC-8)/Fifth International Conference on Climate and Energy (ICCE-5) sponsored by both the Heartland Institute and the European Institute for Climate and Energy (EIKE). Alt's speech, titled “Germany’s new Energy Concept between Dream and Reality” can be viewed below. 
Helmut Alt was a speaker at EIKE's Third International Conference on Climate and Energy (ICCE-3). His speech was titled “Volatile storage of electrical energy on a large scale,” and was under a panel discussing “conventional modern energy.” 
April 6, 2010
In his position at RWE, one of Europe leading electricity and gas companies, Helmut Alt opposed “including renewable energy” in the company's focus (PDF). His reasoning was as follows:
”[..] highlighting this [generation and procurement of renewable energy] so prominently is superfluous as regards the company’s concentration and goals of focus, and it is also dangerous in view of competing supplementary options within a primary energy mix that is to be as diversified as possible.” 
University of Applied Science, Aachen — Professor, Electrical and Computer Engineering. 
From a search of Google Scholar, a Helmut Alt appears to have published a number of papers on the subject of computing.
“People,” FH Aachen. Accessed November, 2012.
“Overview Prof. Dr.-Ing. Helmut Alt,” campus.fh-aachen.de. Accessed November 28, 2012.
“Prof. Dr.-Ing. Helmut Alt,” competence-site.de. Accessed November, 2012.
“Letter of Prof. Dr.-Ing. Helmut Alt Dr. Peter Altmaier, Environment Minister, the energy change,” RL Rational. November 7, 2012.
“8th International Conference on Climate Change (ICCC-8): V International Conference on Climate and Energy (ICCE-5). Hotel Bayerischer Hof, Munich, November 30 – December 1, 2012” (PDF) archived on Desmog Blog.
“Program - 12th International Climate and Energy Conference” EIKE. Translated via Google Translate. Archived November 23, 2018. Archive.fo URL: https://archive.fo/NndcT