Utility Bill Analysis

Sun Tower

Client/Architect: Environmental Works
Project Size: 95,000 sf

Services

  • Utility Bill Analysis
  • Benchmarking
  • On-site Performance Assessment
  • Energy Metering
  • Model Calibration
  • Efficiency Measure Analysis

Sun Tower is a 200 unit, affordable senior living and assistance community located in the sunny heart of Washington State.  The developer and architect team, inspired by some of the work presented on the success of the Green Communities Project, engaged 360 Analytics to help identify and prioritize energy and water efficiency updates as part of a major renovation.  360 Analytics completed a site assessment, including a robust sampling of ventilation and water fixture flow rates.  Two years of energy, water, and solid waste utility bills were compiled, and degree-day regression models were developed to identify the heating, cooling, and base load energy flows.  Using the site measurements and energy monitoring data from past projects, the models were further refined to identify other end-use flows, such as elevators and hot water heating.  The analysis gave the owners and design team a better understanding how utility dollars were being spent, and is being used to prioritize retrofit funds. In addition, 360 Analytics design review led to identifying a suitable heat pump HVAC replacement option, available for a negligible additional cost over the electric resistance option.

 

HUD RAD Conversion Feasibility Study

Client: RMC Architects
Project Size: 434,000 sf (13 Properties)

Services

  • Utility Bill Analysis
  • Benchmarking
  • On-site Performance Assessment
  • Efficiency Measure Analysis

For this project, 360 Analytics assisted the architect and contractor in completing green physical conditions assessment and energy audits, an important component of the HUD RAD Conversion process. 360 Analytics completed on-site surveys, compilation of utility data, identification and modeling of green (efficiency) measures, and reporting in accordance with HUD program requirements. The project involved assessment and analysis of '12' different properties, comprised of over 450 units, most of which were individually metered. The tight timeline of completing all audits in 3 weeks required close coordination with the contractor and other team members. Independent of the Conversion, the owner now has a comprehensive assessment of their portfolio and a prioritized list of efficiency measures and anticipated costs.

Lokahi Apartments

Photo Credit:  Lokahi Apartments

Photo Credit: Lokahi Apartments

Client: Vitus Group
Project Size: 208,000 sf (18 Buildings)

Services

  • Utility Bill Analysis
  • PV and Solar Thermal Modeling

On the sunny side of Hawaii’s big island is Lokahi Apartments, a new cluster of 18 - 3 story walk-up buildings built in 2010.  The buildings include large solar PV and water heating systems, designed with the intent of offsetting all the common area electricity and dwelling unit hot water heating needs with the renewable power of the sun.  Modeling of renewable energy systems was not completed during the design phase, so it was unknown if the systems were performing above or below their anticipated capacity.  360 developed hourly simulations of the each of the relevant building systems and loads for each of the three prototypical buildings located at the site, and compared the models to the actual building utility bills.  The analysis resulted in a detailed list of recommended maintenance, controls, and efficiency measures for the owner to implement.

Arbora Court

Image © Weber Thompson Architects

Image © Weber Thompson Architects

Client: Bellwether Housing
Architect: Weber Thompson Architects
Project Size: 125,000 sf

Services

  • Utility Bill Analysis
  • Benchmarking
  • Model Calibration
  • Informing Design
  • Efficiency Measure Analysis
  • Seattle Energy Code Compliance

The Arbora Court Apartments is a project being realized by Bellwether along with University Christian Church (UCC). It is a new, 133 unit affordable, housing project planned for the bustling University District of Seattle. Leveraging a grant from Enterprise Green Communities, Bellwether Housing assembled a robust team of consultants, designers, and a contractor, Walsh Construction, to develop and evaluate a large package of energy, water, and waste saving strategies early in the design. 360 spearheaded the utility bill analysis of two, recently built, similar buildings in the owner’s portfolio, and used the existing building information to inform and tune the occupant dependent loads assumed for the UCC design analysis. The eQUEST energy model developed by 360 for the project was used to calculate the savings of over 30 different efficiency measures, bundled into multiple packages. 360 worked closely with Bellwether and Walsh to compile the construction costs, utility costs savings, and utility incentives into a comprehensive financial analysis.

Lyon Building

Sector: Non-Profit
Client: Downtown Emergency Services Center (DESC)
Project: 67,000 sf

Services

  • Utility Bill Analysis
  • Benchmarking
  • On-site Performance Assessment
  • Informing Design
  • Efficiency Measure Analysis

The Lyon Building is a historic landmark, as well as a hub for housing and community services in downtown Seattle. The building includes two stories of office and clinic space for the DESC organization, as well as common space and 64 apartments for formerly homeless men and women affected by HIV/AIDS, mental illness, and addiction.

360 Analytics worked closely with the contracting team to identify and analyze a range of energy and water efficiency measures that could be incorporated during a major renovation. By analyzing utility bills, 360 illustrated to the owner and design team where resource costs were being expended. From there, using past experience and information gleaned form site surveys, packages of good, better, and best retrofit improvements were developed. 360 modeled the costs savings for each measure, and when combined with the contractor’s cost estimating, the design team was able to make informed recommendations to the owner. Major renovations were completed in 2016.

Seattle Public Libraries

Client: O'Brien and Company
Project Size: 21 buildings - 220,000 sf (total)

Services

  • Utility Billing Analysis
  • Verification of Energy Savings

Seattle’s library branches serve as gathering and learning centers for all the major neighborhoods of the City. They are a diverse group of buildings, varying widely in age and building design.

360 Analytics was engaged by O’Brien and Company to provide the Seattle Office of Sustainability with an analysis of operations and maintenance (O&M) measures implemented across this portfolio of buildings. To do this, 360 analyzed three years of monthly natural gas and electric utility bills for all sites, and created basic models that represent the weather normalized energy performance of each building before and after operational changes were made. The study was complicated by making O&M adjustments in conjunction with changes to building operation hours. However, 360 developed a novel approach to use available hourly energy interval data to account for this influence, effectively illustrating the range of savings for all buildings.

 

Green Communities Project

Client: Bellingham/Whatcom County Housing Authority
Architect: RMC Architects
Project Size: Three building sites, totaling 260,000 sf

Services

  • Utility Bill Analysis
  • On-site Performance Assessment
  • Model Calibration
  • 90.1 Appendix G Energy Modeling
  • Measurement and Verification (M&V)
  • Utility Incentive Coordination

The Green Communities Project is a major renovation to three public housing authority-owned multi-family towers located in Bellingham, Washington. Funded by a $9.9 million grant from the U.S. Department of Housing and Urban Development (HUD)/American Recovery and Reinvestment Act (ARRA) stimulus funding, the project’s stated goal is to “facilitate transformational energy efficiency and ‘green’ retrofits to substantively increase energy efficiency and environmental performance of public housing properties and thereby reduce energy costs, generate resident and PHA energy savings, and reduce greenhouse gas emissions attributable to energy consumption.”

For this project, 360 Analytics started with an in-depth evaluation of existing building performance, including regression analysis of historical utility data, physical building audits, and targeted short-term sub-metering to develop calibrated, baseline energy models. These models were leveraged to evaluate the impacts of individual energy conservation measures, as well as complete a 90.1-2004 Appendix G analysis to demonstrate grant compliance. Ongoing activities include development and execution of an IPMVP compliant measurement and verification protocol, continued analysis of utility meter and sub-metered energy use data and coordination of utility incentive applications.