Tools and Resources
The U.S. Environmental Protection Agency (EPA) defines green power as electricity generated from renewable resources, such as solar, wind, geothermal, low-impact biomass, and low-impact hydro resources. Whereas energy efficiency measures may be implemented to reduce the overall energy use in your building, the purchase of green power helps to reduce the environmental impacts associated with the generation of electricity for use in your building. This document describes the specific requirements for benchmarking green power in Portfolio Manager.
The energy used in commercial buildings results in significant emissions of greenhouse gases (GHGs) linked to global climate change, making buildings an important part of your GHG inventory. In order to help you assess the emissions footprint associated with your energy consumption, Portfolio Manager incorporates a number of metrics to quantify these emissions.
Commercial buildings all use different mixes of energy including electricity, natural gas, fuel oil, district steam, and many others. To evaluate energy performance for these buildings, we have to express all of these different energy types in a single common unit. Source energy is the most equitable unit of evaluation, and enables a complete assessment of energy efficiency.
For consistency and comparability, all energy performance metrics in Portfolio Manager reports are expressed in either thousand British thermal units (kBtu) or billion joules (GJ) and are annualized to 12 calendar months. However, in most cases your energy bills are not presented in these units and are not tied to calendar months. Therefore, a series of procedures is applied to make these conversions.
Portfolio Manager offers three main meter types, based on the most common ways buildings receive energy:
When you benchmark your building in Portfolio Manager, one of the key metrics you’ll see is energy use intensity, or EUI. Essentially, the EUI expresses a building’s energy use as a function of its size or other characteristics.
For most property types in Portfolio Manager, the EUI is expressed as energy per square foot per year. It’s calculated by dividing the total energy consumed by the building in one year (measured in kBtu or GJ) by the total gross floor area of the building.
Use this trifold brochure to learn about tracking energy, water, and waste with EPA's ENERGY STAR Portfolio Manager.
This is a sample of the application needed to apply for ENERGY STAR certification. It consists of an overview of the overall property, the property use details, and energy consumption. A Verifying Professional needs to sign and stamp the application to verify the validity of the data.
This is a sample ENERGY STAR Data Verification Checklist, available through Portfolio Manager (on the Reports tab). While not intended for use when applying for ENERGY STAR certification, this Checklist can help you determine whether or not your building is eligible. The Checklist contains the same sections as the real application for certification, including an overview of the overall property, the property use details, and energy consumption.
This is a sample ENERGY STAR Progress and Goals Report, available through Portfolio Manager (on the Reports tab). Create your own Progress and Goals Report to review your building’s energy use (baseline and current) and compare your actual energy use against your target and the national median. This report may be needed when applying for a grant or responding to a competition.
This is a sample ENERGY STAR scorecard, available through Portfolio Manager (on the Reports tab). Create your own one-page scorecard for a visual representation of your building’s 1-100 ENERGY STAR score, or, if no score has been developed for your building type, your building’s site energy use intensity (EUI). Scorecards are available for all building types and can be used to report or display your building’s energy performance, such as posting the scorecard in your building’s lobby for public disclosure purposes.