SL Naturenergie's predicament is common in the renewables sector where companies, from startups to medium sized and blue-chip firms, are competing for a limited pool of labour with appropriate skills.
Currently it faces a shortage of around 216,000 skilled workers needed for the expansion of the solar and wind energy sectors, a study by German organisation KOFA, or the Competence Centre for securing skilled labour, showed.
In many jobs in the renewable energy sector, pay is above average, he said, citing a renewable energy wage premium of more than 10% in construction and installation activities, as well as architectural and engineering services.
Volker Quaschning, a professor of renewable energy systems at HTW university in Berlin, says a third of places on these courses at HTW are unfilled.
Last month Germany also unveiled draft reforms on skills training accreditation and promoting immigration in a bid to plug labour shortages in the economy.