Norsk Hydro is, after it's demerger with statoil, mainly a corperation opperating in building materials, alluminium, renewable energy and hydro dam opperation, maintainance & construction. Their hydro dams are partly used for their Aluminium opperations, so to make them energy independant.

Norsk Hydro, a Norwegian company, is a large cap with over 20.000 employee's. It's a value stock, trading below it's price, or atleast having a high EPS compared to stock price. The company has also a very nice dividens, and often rewards it's investor's with special dividend's, dividends are also increasing the longer you hold the stock.