> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abisko.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Energy

> Whole building energy performance metrics & calculations.

Whole building energy performance metrics are automatically calculated using a powerful analytics engine that enables users to analyze monthly and annual performance trends across meters, spaces, properties, and portfolios.

## Methodology

The section below shows how consumption data is rolled up from in-metric energy meters to calculate **whole building** performance metrics.

<img src="https://mintcdn.com/abisko/MAGBwHW7ghPLZnBo/images/Group1000002844.png?fit=max&auto=format&n=MAGBwHW7ghPLZnBo&q=85&s=b027523d17dbf3317975fe75704ccc51" alt="Group 1000002844" width="3525" height="1066" data-path="images/Group1000002844.png" />

<Steps>
  <Step title="All energy meters associated with a space type are collected">
    * For whole building performance metrics all **in-metric** meters are used.
  </Step>

  <Step title="Meter consumption is normalized into common units & calendar months">
    Consumption entries between meter activation & deactivation dates and property buy and sell dates are broken down and reconstituted into monthly values for each meter. Data outside of these boundaries is ignored.

    <Note>
      For bulk delivery energy meters (e.g. Fuel Oil), all energy associated with the entry is attributed to the month in which the fuel was delivered.
    </Note>
  </Step>

  <Step title="Monthly consumption values are aggregated by meter type & subtype">
    Meters are grouped by subtype and higher-level types, to enable performance metrics at multiple resolutions.

    <Accordion title="Energy meter types and subtypes" icon="sparkles">
      | Subtype                | Type     |
      | ---------------------- | -------- |
      | Electric               | Electric |
      | Electric on Site Solar | Electric |
      | Electric on Site Wind  | Electric |
      | Natural Gas            | Fuel     |
      | Diesel                 | Fuel     |
      | Fuel Oil No 1,2,4,5,6  | Fuel     |
      | District Steam         | DHC      |
      | District Hot Water     | DHC      |
      | District Chilled Water | DHC      |
    </Accordion>
  </Step>

  <Step title="Monthly consumption data is aggregated over rolling 12-month periods">
    For every meter type and subtype, monthly normalized values are rolled up to provide monthly & annual metrics for every possible 12-month reporting period.
  </Step>

  <Step title="Values are further rolled up into portfolio-level insights.">
    Monthly and annual consumption values are aggregated across all properties to enable portfolio-level views.
  </Step>
</Steps>

***

## Tracking Performance Metrics

Users can analyze energy performance across meters, properties and portfolios.

### Portfolio Level

1. **Portfolio  → Portfolio Trends → Energy**
   * Annual portfolio-level performance and data quality trends (whole building)
2. **Portfolio  → Property Trends → Energy**
   * Annual property-level performance and data quality trends (whole building)
3. **Portfolio  → Spaces → Energy**
   * Annual space-level performance and data quality trends (space-based)
4. **Portfolio  → Goals → Energy**
   * Annual property-level performance trends relative to reduction targets
5. **Portfolio  → CRREM → Energy**
   * Annual property and portfolio-level performance relative to CRREM targets

### Property Level

1. **Property → Performance**
   * A variety of property-level reports with monthly & annual performance trends
     * All Time Usage Trends Report (WEB & PDF)
     * Monthly Usage Comparison Report (WEB & PDF)
     * Monthly Cost Comparison Report (WEB & PDF)
2. **Property  → Annual Trends**
   * Annual property-level performance and data quality trends (whole building)
3. **Property  → Meter Exploration → Energy**
   * Monthly & annual meter-level performance and data quality trends
4. **Property  → Spaces → Energy**
   * Monthly & annual space-level performance and data quality trends
5. **Property  → CRREM → Energy**
   * Annual property-level performance relative to CRREM targets

### EXCEL Reports

1. **Portfolio → Reports → Performance**
   * Portfolio Performance & Data Quality Report
   * Portfolio Energy Cost Report
   * Investor Report (PDF)
   * Landlord vs. Tenant Report (Space-based)
2. **Portfolio → Reports → ESPM**
   * ENERGY STAR Portfolio Manager® Gaps & Flags Report
   * ENERGY STAR Portfolio Manager® - Multiyear Performance
3. **Portfolio → Reports → GRESB**
   * GRESB Audit Report
   * GRESB Asset Level Spreadsheet