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Entergy | The Power of People

CUSTOMER: Simmons National Bank Building

THE OPPORTUNITY

Simmons National Bank Building (formerly the Metropolitan National Bank Building), a 40-story skyscraper, is the tallest building in Little Rock. Keeping the satisfaction and comfort of the tower's tenants, employees and customers in mind, building owner Capitol Avenue Development determined the 26-year-old building needed an energy efficiency makeover. 

THE PROJECT

Taking a comprehensive approach, decision makers worked with the Large Commercial & Industrial Program team to target multiple areas of improvement. The engineering support combined with technical and financial analysis provided by the program allowed decision makers to secure approval of multiple projects, including high-efficiency lighting upgrades and replacements, HVAC upgrades and chiller replacements. In addition, the program team installed lighting controls and no-cost electricity- and water-saving devices that further reduced energy use.

THE RESULTS

While the implementation of these projects resulted in significant annual savings and increased energy efficiency, what's most notable about Capitol Avenue Development's participation is that these savings are equivalent to eliminating the carbon dioxide emissions from 363 passenger vehicles. Lastly, the incentives earned combined with annual energy savings yields a short ROI of less than seven years on a project with an expected life of 30 years or longer.

To learn more about the Large Commercial & Industrial Program, contact the Energy Efficiency Solutions Center at 877-212-2420 or visit entergyarkansas.com/commercial.

PROJECT AT A GLANCE

Annual kWh reduction: 2,469,066

Estimated annual savings: $160,489

Total project incentive: $426,377

Payback period: < 7 years


Measure

Savings (kWh/year)

Lighting Retrofit (Exit, elevator lights)

215,085

Chiller Replacement

388,688

Chilled Water Pump (VFD)

132,840

Chiller Controls

1,316,404

Direct Install Measures (Low-flow aerators)

399,486

Lighting Controls

16,563

Total

2,469,066