Former electricity monopoly United Energy System is to conclude more than $2 billion in share sales for three of its power producers today. Enel, which is building a strong presence in Russia’s energy sector, plans to invest more than €2bn ($3.1bn) in the country over the next five years, seeking to cement its position in Europe’s “largest market and largest opportunity”. Nuclear-plant operator Rosenergoatom is “tapping yesterday’s military brains to develop a new generation of atomic plants,” signaling Russia’s rise as a nuclear force.