Building Recommendations
After analyzing all the data, doing walk-throughs, interviewing occupants, and compiling building condition assessments, recommendations were developed of what level of intervention buildings in the portfolio needed.
In addition to review of 12 months of electric and natural gas data, additional information about the condition of the building was gathered through a high- level walkthrough. Based on the building conditions including envelope condition, HVAC condition and the energy use intensity, the buildings were categorized into a six different project scope options to support energy need reduction using a decision tree as shown in the diagram below. These recommendations were then reviewed with each department and the final recommendations for each building can be found in the dashboard.
GOAL 1: BUILDING IMPROVEMENTS
Align the design and construction of existing and future municipal buildings with the energy reduction targets established in this plan.
To achieve 32% GHG reduction, buildings were recommended for the following interventions.
LEVEL OF INTERVENTION
Major Renovations
These projects include a comprehensive retrofit that impacts all systems in the building: programming, envelope, lighting and HVAC. These projects represent opportunities for the deepest energy savings. The best candidates for these projects include ones with significant deferred maintenance and can be candidates for net zero energy projects.
Target GHG Reduction: 60%
Minor Renovations
These projects have a significant impact on 1-2 major building systems such as HVAC and, lighting. These projects present opportunities to improve failing equipment, enhance indoor environmental quality and reduce peak cooling/heating demand. A typical example of this type of project would include replacing an air handling unit and corresponding zone level equipment for a portion of a building.
Target GHG Reduction: 40%
Scheduled Maintenance
These projects address individual equipment needs, especially those that are at their end of life. An example of this project would be the replacement of a cooling tower or boiler.
Target GHG Reduction: 10%
Retro Commissioning
These projects address buildings recently modernized but are not performing optimally. Addressing small component failures such as valves, damper actuators, or sensors could improve operational energy performance for these buildings.
Target GHG Reduction: 10%
