Operation of an electrical installation business, and in particular the design, planning, execution, and installation of electrical systems and plants of any kind, as well as control systems; inspection of electrical installations and lightning protection systems; provision of consulting services in these areas as well as in the field of energy; trade in lighting fixtures and other electrical systems, apparatus, devices, and goods of any kind for households and businesses; performance of maintenance work, repair work, and upkeep; provision of all further work and services related to the aforementioned activities; investments; acquisition, holding, management, administration, use, leasing to third parties, encumbering, trading, disposal, or exploitation of any other type of securities, capital investments, intangible assets or rights, raw materials of any kind, mobile assets of any other kind, as well as real estate of any kind, and execution of all other legal transactions related to these assets; obtaining loans and credits for itself, affiliated companies, shareholders, and third parties; granting loans and credits to affiliated companies, shareholders, and third parties; assuming liability for loans and credits of affiliated companies, shareholders, or third parties as a guarantor; provision of other guarantees or securities of any kind, in particular pledging, fiduciary transfer, or provision of other securities; incurring and assuming bill of exchange liabilities; execution of any other form of short-term, medium-term, or long-term investments, financings, and financial transactions.