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The Project at a Glance

Building Information
Reed Smith LLP
Tenant Name
Brandywine Realty Trust
Building Owner
1717 Arch Street, Philadelphia, PA
16 years
Lease Term
117,000 square feet
Project Size

In February 2014, Reed Smith LLP, a leading international law firm, moved into 129,996 square feet on six floors in Philadelphia’s Three Logan Square, a 57-story tower. To reduce energy use and cost, make a positive impact on the environment, and improve the health and wellness of the 300 employees who work in the Philadelphia office, Reed Smith chose to participate in the Tenant Energy Optimization process when designing its new tenant space. The process is a proven, replicable approach that integrates energy efficiency into tenant space design and construction and delivers excellent financial returns through energy conservation.

Floors 28 to 33 buildoutProjected results*
Energy reduction44.5%
Annual electricity reduction692,292 kWh5.9 kWh/SFkWh / kWh/SF
Total electricity savings over lease term11.1 GWh94.7 kWh/SFGWh / kWh/SF
Adjusted incremental implementation cost$153,058 total$1.31/SFTotal / SF
Total electricity cost savings over lease term$1,126,498 total$9.63/SFTotal / SF
NPV of project investment$627,319 total$5.36/SFTotal / SF
ROI over lease term410%
Payback period (with incentives)2.2 years
*Based on models calibrated through a post-occupancy Measurement & Verification Process. See the third resource guide, Measurement & Verification: Post-Occupancy for more information.

Executing the Process

Design and Construction

Building owner Brandywine Realty Trust was familiar with the Tenant Energy Optimization process and recommended its implementation. The building owner introduced Reed Smith to the early developers of the process and also helped the tenant assemble a team of energy and real estate experts, some of whom had past experience implementing the process in other tenant buildouts and could help facilitate its execution.

The energy team outlined energy performance goals that aligned with Reed Smith’s overall corporate sustainability targets and developed an extensive list of energy performance measures (EPMs) to be considered for implementation into the final buildout. EPMs are technologies and systems that aim to reduce energy use through efficiency and conservation. They are also frequently referred to as energy conservation measures (ECMs).

Using energy performance modeling, incremental costing information, and cost savings projections, the team was able to choose a package of EPMs that would meet the energy and financial goals of the company. Because the six floors included in Reed Smith’s buildout do not operate identically, not all EPMs were implemented on all floors.

Energy performance measure (EPM)Target areaElectricity reductionAnnual cost savingsIncremental first costSimple payback
High-efficiency lighting (0.84 W/SF)Lighting14,310 kWh/yr4.9%kWh/yr / %$1,455$0Immediate
Daylight harvestingLighting11,771 kWh/yr4.1%kWh/yr / %$1,197$10,5008.8 years
Bi-Level lighting controlLighting7,626 kWh/yr2.6%kWh/yr / %$776$1,0831.4 years
Dimmable switching controls (25% dimming)Lighting3,833 kWh/yr1.3%kWh/yr / %$390$10,33326.5 years
ENERGY STAR equipmentPlug load3,918 kWh/yr1.4%kWh/yr / %$398$0Immediate
Occupancy sensor plug stripsPlug load2,698 kWh0.9%kWh / %$274$3,50012.8 years
Manually controlled quad outletsPlug load2,859 kWh/yr1%kWh/yr / %$291$2,0006.9 years
After-hours outlet controlPlug load1,956 kWh/yr0.7%kWh/yr / %$199$3,83319.3 years
High-efficiency motors and variable drives on air-handling unitsHVAC86,378 kWh29.8%kWh / %$8,785$10,8331.2 years
Companies and Roles
Project manager
Wendy Fok
Energy project director
Bala Engineers
Bliss Fassman
Lighting designer
Kugler Ning Lighting Design
Lighting designer
Quest Energy
Energy modeler
Integral Group
Energy consultant
Hunter Roberts
Contractor and costing consultant
Brandywine Realty Trust
Building owner

Measurement and Verification

After completion of the buildout, Reed Smith enlisted an energy consultant to perform measurement and verification (M&V) to ensure that the implemented EPMs were performing as intended. For cost reasons, Reed Smith conducted M&V on only two of the six floors. M&V was conducted over the course of a ten-day period on floors 28 and 31, once the space was fully occupied and operational. Results from M&V show that the original energy model overestimated energy consumption by approximately 35 percent, largely because of overestimation of IT load and equipment plug loads. The model was recalibrated to more accurately reflect actual energy use. Despite the required adjustments to the energy model, all implemented EPMs were confirmed to be operating as designed.

Post-Project Actions

Reed Smith employees have noted that there was a small adjustment period to the different functionalities of some of the lighting controls but that the new space is more conducive to high productivity and comfort.

“Generally, there is a strong sense of pride in playing a part in such a meaningful project, and the employees are proud to occupy facilities which strive to use forward-thinking energy conservation protocols,” said Pat Hiltibidal, Reed Smith’s firmwide chief of office services.

The experience gained from implementing the Tenant Energy Optimization process within Reed Smith’s Philadelphia office space created a more intense focus and serious consideration of the financial returns that can be realized through investments in energy efficiency. As a global firm, Reed Smith will use the Philadelphia project to inform the design of future office spaces.