St. Louis Cardinals hit an efficiency grand slam

[Editor's note: The greening of sports is a topic we've covered extensively at GreenBiz, ranging from college sports departments and professional leagues to numerous iconic events, such as the Super Bowl and the Olympics. As we see below with the St. Louis Cardinals, these sporting organizations are reaching beyond reducing waste and energy use to seize new opportunities for reaping the finacial rewards sustainability can offer, such as producing their own renewable energy and exploring the use of biofuels.]

The 2011 World Champion St. Louis Cardinals are accustomed to winning. With a total of 11 World Series titles under their belt -- second only to the Yankees -- it's no surprise that they set the bar high for all aspects of their game, even off the field.

In fact, with the help of NRDC's Sports Greening Project, after several years of work on resource efficiency in the areas of energy, water and waste, this year the Cardinals are proud to announce huge savings across the board.

With a 30 percent recycling rate, 20 percent reduction in overall energy use (and base power demand) and 10 percent cut in water use across all operations, the Cardinals are putting up some impressive numbers -- and you might say they've earned a "Triple Crown" for efficiency and environmental stewardship amongst clubs in the Central division. Photo Credits: Microgrid Solar

In addition, the team recently unveiled a new 110-panel solar array atop a ticket building and concession area at one major entrance to the ballpark. The array will produce more than 30,000 kWh of energy annually, enough to power the stadium scoreboards, or all of the ballpark's retail stores, or cook about 4 million hot dogs!

One key to the Cardinals' energy successes to date is that they commissioned an "investment-grade" energy audit in 2011 to identify potential energy efficiency measures for the ballpark. They found close to 200 cost-effective energy improvements, despite the fact that Busch Stadium was just built in 2006.Photo Credits: Microgrid Solar

The Cardinals' operations team and Microgrid Energy, Busch Stadium's energy manager, have been working hard to make the ballpark a high-performance building. Based on the many energy saving opportunities they identified in their audit, they devised and are systematically implementing a comprehensive energy efficiency strategy, including no or low cost controls systems optimization and potential capital upgrades.

The team is a third of the way through executing their list of energy-efficient measures, with plans to complete them all. Here are some of the highlights:

  • LED lighting upgrades: The Cardinals have replaced more than 1,000 traditional spotlights and floodlights with LED lamps to cut lighting power demand in several areas around the ballpark by 90 percent.
  • Electrical substation ventilation: The team implemented a ventilation control scheme in electrical rooms to eliminate the year-round use of the equivalent of a hefty 100-ton air conditioner.
  • HVAC efficiency: The Cardinals installed smaller, dedicated cooling systems for the scoreboard control room and video coaching room. These rooms were previously cooled by very large HVAC units better suited for larger areas during peak times. The larger units are now only used during game times.    
  • Steam plant upgrade: As a result of the energy team changing the operation and controls on pumps and the installation of a new heat exchanger, the steam plant is now able to recover heat from waste condensate (from the system that brings hot water to the showers and HVAC systems). This reduces the amount of heat they need to generate for other applications, and eliminates the need for pumping 5 million gallons of cooling water.