Five strategies to improve energy performance in existing buildings

After performing retro-commissioning and energy audits for more than five million square feet of existing building real estate, we have developed a list of common low/no-cost Energy Conservation Measures (ECMs) that are identified on the majority of projects.

October 02, 2017 |
Abundance: The Paladino Blog
A closeup of markers lined up on a surface

Anyone who owns or operates an existing building should be scheduling energy audits and/or retro-commissioning. Here’s why:

Improving building energy performance reduces costs, lowers strain on shared community resources, and demonstrates a commitment to environmental stewardship. Local jurisdictions nationwide are leading the charge to improve building performance, and many have adopted the LEED Energy and Atmosphere Prerequisite: Commissioning for new buildings as part of their standard requirements.

One result of these standardized requirements is commissioning on new buildings has become more common in the real estate industry. Although standardized commissioning is a critical step in ensuring energy efficient, properly operating new buildings, there is another largely untapped area of energy savings: existing buildings. Energy audits and retro-commissioning are ideal solutions to this problem and can lead to significant savings for the owner.

An energy audit identifies deficiencies and develops strategies to reduce energy waste and improve building performance. Retro-commissioning is simply the follow-up to an audit or the implementation phase of the identified improvements. An energy audit can typically identify 5-20% savings, depending on the building’s current operation level.

After performing retro-commissioning and energy audits for more than five million square feet of existing building real estate, we have developed a list of common low/no-cost Energy Conservation Measures (ECMs) that are identified on the majority of projects.

Here are five of our favorites:

IMPLEMENT OR REFINE EQUIPMENT SCHEDULES
One of the easiest ways to instantly see savings is to establish operating schedules for the HVAC equipment in the building. Modern building automation can schedule when equipment is turned on and off, and prevent the equipment from conditioning the building when it is empty.  Energy savings can be achieved by simply reviewing the lease agreements and adjusting the start times accordingly.

TEMPERATURE SETPOINT CONTROL
Maintaining temperature setpoints for the heating and cooling seasons and limiting the user adjustable range is a simple way to provide quick, easy savings without sacrificing tenant comfort.

CALIBRATE OR REPLACE SENSORS
An uncalibrated sensor can cause equipment to run more often and at a higher capacity, or it can even prevent equipment from entering free cooling operation.

TEMPERATURE/PRESSURE RESET SCHEDULES
During much of the year, the central systems do not need to operate at their design temperatures and pressures to satisfy the building loads. Building automation systems can usually adjust setpoints to account for building load conditions. For example, a hot water system would not need to provide the same temperature water to satisfy the heating load on a 40-degree day as it would on a 10 degree day. Similar resets can be implemented on chilled water and air side systems. These types of adjustments can provide good savings, and can require a more complex building automation system

LIGHTING CONTROLS
Occupancy sensors can be a relatively low cost option to ensure lights are properly turned off in regularly unoccupied areas (storage closets, trash rooms, IT closets) or for office areas in the evenings.

If these five approaches don’t apply to your building, that’s ok! In our experience, we have developed a comprehensive list of best practices, and we add to it regularly. An audit will reveal where you need to focus on changes and tweaks, and will generate a customized list of recommendations that is perfect for your building.

Abundance: The Paladino Blog | Paladino and Company

Paladino and Company is a sustainability consulting firm that works with organizations seeking to make a difference through their buildings and people. Abundance, written by our team of architects, engineers, building scientists, commissioning agents and business analysts, reflects our rigorous business and building technical analysis centered on the concept of abundance as a driving force for change.  Our consultants offer insights, expertise and vision on sustainability and how to realize its business value. For more, visit http://www.paladinoandco.com/blog/.

Related Blogs

August 16, 2018 | Green | Paladino and CompanyKim Pexton

When there’s only so much real estate available in urban centers for parks, how’s a developer to bring in m...

June 05, 2018 | Retail Centers | Paladino and CompanyTom Paladino

Old malls have three weak links in their value chain. Each weak link affects the mall’s surrounding communi...

March 21, 2018 | Sustainability | Paladino and CompanyKim Pexton

The largest number of changes in v4.1 affect materials.

March 14, 2018 | Architects | Paladino and CompanyNash Emrich

With the environmental movement, sustainability became a marker of innovation in design for the built envir...

February 19, 2018 | Lighting | Paladino and CompanyBrad Pease

In the real estate industry, understanding how our buildings are used is critical to understanding how to m...

January 23, 2018 | Paladino and Company

Paladino surveyed its team of architects, engineers, and building scientists, and here are a few of the big...

January 15, 2018 | Green | Paladino and CompanyKim Pexton

The DOE Better Buildings Initiative has made a bold statement calling 2018 the “Year of the Lease”.

January 05, 2018 | Multifamily Housing | Paladino and CompanyBrian Walker

The demand for rental housing has been on a steady climb since 2004.

October 30, 2017 | Multifamily Housing | Paladino and CompanyDarren Bruce

What's the right set of "lungs" for your building?

July 12, 2017 | M/E/P Systems | Paladino and CompanyBrian Atkinson

Maintenance and engineering managers need to monitor the condition of their equipment and the workloads of...

Overlay Init