Index provider the FTSE Group is expanding its popular group of environmentally themed indexes.

The FTSE Environmental Opportunities Index series will add nine new products, according to FTSE.  Those include two water-related benchmarks, a pair of renewable energy indexes and two more so-called energy-efficiency products.

Two indexes will also target companies involved in waste and pollution controls.

Launched in July 2008, the series is derived from the FTSE Global Equity Index series and includes companies with at least 20% of their business coming from environmental markets and technologies.

Constituents are researched by Impax Group Plc. The specialist environmental investment company has partnered with FTSE to develop a range of indexes that cover environmental markets. 

"The FTSE Environmental Markets indices track the performance of those companies who are best positioned to benefit from the shift to a global low-carbon economy," said Will Oulton, head of FTSE's responsible investment group, in a statement.

The new indexes are:

• FTSE EO 100 Index (the largest 100 companies included in the FTSE EO All-Share Index)

• FTSE EO Water Technology 30 Index

• FTSE EO Water Technology Benchmark Index

• FTSE EO Renewable Energy 50 Index

• FTSE EO Renewable Energy Benchmark Index

• FTSE EO Energy Efficiency 50 Index

• FTSE EO Energy Efficiency Benchmark Index

• FTSE EO Waste and Pollution Control 30

• FTSE EO Waste and Pollution Control Benchmark Index