St. John Properties Headquarters’ Integrated Energy Efficiency Solutions

Background

Situated just outside Baltimore, MD, the St. John Properties headquarters is a 71,000 square foot, 2-story Class “A” office building designed for optimal operational efficiency. The building serves as a testing ground for energy efficiency and sustainability initiatives and regularly pioneers measures to be replicated across their entire commercial real estate portfolio. To further its ongoing commitment to reduce energy consumption, St. John Properties headquarters implemented a series of energy efficiency upgrades between 2018-2021, which included enhancements to HVAC, solar, and lighting systems, alongside the implementation of a Building Management System (BMS), resulting in over 225,000 kWh of energy savings and $12,500 in cost savings annually.

Solutions

The St. John Properties Headquarters achieved LEED certification for Operations and Management as an existing building (EBO&M) in 2012 and was among the first of St. John’s properties to undergo retrofitting with LED lights, now the primary energy-saving feature across the portfolio. Building on the success of the LED retrofit, a comprehensive series of upgrades was implemented between 2018-2021, addressing various facets of the building. This included HVAC Damper Upgrades, which replaced outdated equipment and installed new dampers on rooftop units to ensure optimized performance. Solar Optimization measures were also employed to fine-tune existing rooftop solar infrastructure, maximizing operational efficiency.

The second-floor renovation integrated state-of-the-art HVAC equipment and air balancing techniques, while the conference room HVAC upgrade introduced a high-efficiency air handling unit, enhancing comfort and reducing energy consumption. Additionally, a lighting retrofit smoothly transitioned outdated fixtures to energy-efficient LEDs.

The implementation of a Building Management System also introduced an intelligent energy management system, enabling proactive HVAC monitoring and scheduling. This system provides an enhanced view of the buildings HVAC, identifying smaller system errors before leading to bigger problems.

Collectively, these initiatives resulted in over 225,000 kWh of energy savings and cost savings of $12,500 annually, underscoring St. John Properties' ongoing commitment to reducing energy consumption and costs.

Savings Measure	Cost	Savings Achieved	Notes
HVAC Damper Upgrades	$15,000	50,000 kWh	Replacement of old HVAC rooftop units.
Solar	$5,000	5,000 kWh	Original solar system tuned-up and operating effectively.
Second Floor Renovation	$60,000	20,000 kWh	Fit-out of the second-floor office expansion
Conference Room HVAC Upgrade	$25,000	10,000 kWh	New high-efficient air handling unit in the main conference room.
LED Upgrades	$15,000	40,000 kWh	LED replacements
Building Management System	$20,000	100,000+ kWh	Intelligent building energy management system installation

ANNUAL ENERGY USE

(Source EUI)

ANNUAL ENERGY COST

(Source U.S. Dollars )

ANNUAL WATER USE

ANNUAL WATER COST

ANNUAL PLANT ELECTRICITY USE

ANNUAL PLANT ELECTRICITY COST

IN BUILDING ENERGY USE

IN BUILDING ENERGY COST

ACROSS NETWORK USE

ACROSS NETWORK COST

ANNUAL EMISSIONS

USE

COST

ANNUAL WASTE COST

ANNUAL WASTE USE

St. John Properties Headquarters

St. John Properties Headquarters’ Integrated Energy Efficiency Solutions

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St. John Properties Headquarters