Cogeneration and solar power have brought big sustainability gains in Albuquerque — now operators are looking for more advances.

A small Maryland city’s clean-water plant provides a site for a 2.1 MW solar photovoltaic system with benefits that spread throughout the community.

Solar energy provides most of the energy for the Rifle water reclaim plant, while operators’ innovations cut down electricity consumption.

A dual-axis solar photovoltaic system means a future of major savings on electricity for the treatment plant in Madera, Calif.

A solar PV installation in Boulder, Colo., required minimal up-front investment, and yet provides substantial benefits in lower power costs.