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Spotlight on Penn1 Measuring results
We chose Penn1 for the detailed profile because we have firsthand experience building, operating and occupying it. And it has been around long enough for us to know what worked, what didn’t, and what we want to do next. The retrofit in 2021 changed several factors in the office design, including a reduction in lab space; the relocation of some meeting rooms from the perimeter of the floor into the middle; changes in daily occupancy levels due to a switch to support hybrid working; and addition of smart technologies such as lighting, window shades, security cameras, and occupancy sensors powered by PoE (Power over Ethernet). Data doesn’t exist before and after the retrofit to isolate the energy impact of each of these changes, so the calculations below looked at the impact for the total design change. Over time, the energy usage in Penn 1 varies based on internal variables such as occupancy levels, equipment usage, and environment control settings, as well as external variables such as time of year, lighting levels, and solar heating intensity. To compare energy usage pre- and post-retrofit, the daily energy rate for equivalent months was therefore used in the calculations.
Figure above shows the averaged 36% drop in energy usage per day from May 2019 to Feb 2023. Full report here "Penn1 was the first site in our portfolio that we designed with a primary objective of quality over quantity: quality of technology, quality of settings, and quality of data being collected. We had to be efficient in the footprint and responsible in the way we built this space to assure we can amend from our learnings in subsequent phases. Consider this a living lab for our customers, partners, and employees.” Christian Bigsby, Senior Vice President, Workplace Resources, Cisco
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