NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC.

Introduction to EDAPT and OpenStudio

Andrew Parker Commercial Buildings Controls and Analysis Tools Team

April, 2015

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DOE’S Energy Modeling Ecosystem

OpenStudio bridges the gap between capable but complex engines and the easy-to-use applications that drive energy savings.

• Open Source • Cross Platform • Collaborative

The Technology Performance Exchange (TPEx) and Building Component Library (BCL) provide the raw data that powers the ecosystem.

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Today’s Focus:

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Energy Design Assistance (EDA)

Programs to incentivize advanced design

Primary tool to influence efficiency for beyond code new construction

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Challenges

1.EDA viability jeopardized as codes rise 2.Must reduce admin costs to remain viable 3.Must maintain quality and consistency

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Ways to Address

1. Lower administrative costs – Automate tracking and approvals – Streamline communications – Streamline reporting to regulators

2. Make energy analysis cheaper

– Analyze faster = more savings per hr worked – Consultants paid per kWh/kW/Dth saved

3. Find deeper savings

– Will soon require advanced technologies – Technologies can’t be modeled in current tools

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Xcel Energy’s Solution

1. EDAPT web service - Lower administrative costs – Tracks project status and next steps – Manages data and communications in one place – Reports program-wide outcomes

2. OpenStudio & EnergyPlus - Make analysis cheaper – Free, publicly available tools – Quickly model many EEMs – Automate QAQC – Analysis results directly into EDAPT – Automated report generation

3. OpenStudio & EnergyPlus - Find deeper savings – Expanding library of EEMs to model advanced tech quickly – DOE continues to support and add new technologies

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The Pieces

www.eda-pt.org

Energy Consultant: • Runs analysis with OpenStudio on their computer • Submits results to utility via www.eda-pt.org

Utility Program Reviewer • Reviews submissions/results • Approves/rejects

Web Service Tracks • Applications • Analysis results • Project status • Report templates • Utility review • Utility rollups

Customer/Design Team • Receive status updates

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– Tracks projects – Manages data and communications – Reports program-wide outcomes – Integrates with analysis tools

EDAPT Web Service

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Overview of EDAPT Workflow

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OpenStudio - EDAPT Integration

• EDAPT leverages open source tools and data sources – EnergyPlus: DOE’s flagship building energy

simulation engine

– Radiance: DOE’s daylighting analysis engine

– OpenStudio: Enables rapid development of tools for auditor and design practitioners

Easy-to-create baseline models

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OpenStudio - EDAPT Integration

• EDAPT leverages open source tools and data sources – EnergyPlus: DOE’s flagship building energy

simulation engine

– Radiance: DOE’s daylighting analysis engine

– OpenStudio: Enables rapid development of tools for auditor and design practitioners

– Building Component Library: Extensible online repository of modeling inputs and measures

Drag-and-drop EEMs from the Building Component Library make design alternative

modeling rapid and repeatable

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OpenStudio – EDAPT Integration

• OpenStudio packages results for upload – Required simulation results for all

design alternatives – Automated model quality checks – Automated EDA protocol checks

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Detailed Portfolio Tracking

Reports Reports Template Reports

OpenStudio – EDAPT Integration

EDAPT project data + OpenStudio output = Generated documents

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How is OpenStudio Different?

Just one word. Measures.

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Modeling Expert

Modeling Today

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Comprehend

Interpreting for energy modeling: This is Expensive!

Input

Modeling Today

ECMs

Simulation Program From concept to inputs…

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Knowledge is passed one-to-one: Inconsistent, not scalable

Watch closely.

Modeling Today

Simulation Program

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A better way to share modeling techniques.

Help!

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What We Need

Simulation Program

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OpenStudio Measures are: Scripts that alter an energy model

OpenStudio Measure:

Do something to model

Model in Model out

It Exists!

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Add something Remove something Change something

Compute something

Report something

OpenStudio Measures Can…

} Efficiency Measures

} QA/QC Measures

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Old HVAC Removed DOAS Added

Night Setback Schedule Applied

Before

After

Daylighting Measure Package Applied Before

After

Example Measures

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Measure:

Do something to model

Sharing Expert Knowledge

Thanks!

Simulation Program

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Drag & Drop

Parametric Analysis Tool (PAT)

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Parametric Analysis Tool (PAT)

Set User Inputs

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Measure:

Do something to model

Sharing Expert Knowledge

Thanks!

Simulation Program

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Sharing Expert Knowledge Simulation Program

Measure:

Do something to model

Thanks!

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Energy Consultants (ECs): • Automate ECMs, and reuse them across many projects • Junior modelers can assess more ECMs, more quickly

EDA Program Managers: • Automate common ECMs, and share with all ECs • Automate QA/QC to catch common errors and protocol

violations

How EDA Programs Use Measures

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DOE’s Goal – National Impact

Working with: Austin Energy CPS (San Antonio) Duke Energy National Grid Others

DOE is making EDAPT available to all utilities nationwide

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Demo