The DJSI World is one of the world's most important sustainability indices and is considered an important guide for investors or other groups with an interest in the services that companies perform outside of finance.
In the Dow Jones Sustainability World Hydro's index for 2012/2013 was included with a slightly improved rating compared to the previous year.
Hydro has been included in the Dow Jones Sustainability Indexes since they were introduced in 1999.
In 2011 Hydro was placed in the European STOXX Index, which is now called DJSI Europe and belongs to the Dow Jones Sustainability Indices, but not to the DJSI World.
The DJSI World Index presents the top 10 percent of companies in each industry, while the regional DJSI Europe Index lists the top 20 percent of companies in Europe.