Calpine

Independent Power Generation Using Natural Gas and Geothermal Energy Calpine’s Freestone Energy Center in Fairfield, Texas uses natural-gas-fired combined-cycle generators Calpine enjoys a unique status as an electric power producer. With 2350 employees, it’s not...

HESCO Bastion

Develops Modular Building Units for Flood Protection and Much More Workers fill Concertainer units atop a levee in New Orleans As Hurricane Katrina approached New Orleans in August 2005, local officials needed something besides sand bags to fill existing gaps in their...

Earth Tech

Environmental Engineering Firm Seeks to Create a Culture Environmental and water and wastewater still comprise the largest sectors of Earth Tech’s work Photos courtesy Earth Tech In 1970, Earth Tech was founded as a geotechnical engineering firm, and beginning in the...

Princeton Power Systems

Seeking a Clean Wave Form in Power Conversion Devices Princeton classmates Eric Limpaecher, Darren Hammell, and Mark Holveck started the company based on a technology invented by Limpaecher’s father. If you stroll through the Forrestal Campus at Princeton University...

BLR Aerospace

Applies Boundary Layer Phenomena to Improve Flight in Planes and Helicopters By Karen Sanders Ever wonder what those funny-looking things are on the tips of airplane wings? BLR Aerospace develops those to improve performance and safety and reduce fuel consumption of...