phoenix convention center phoenix, arizona. energy exchange : federal sustainability for the next...
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Phoenix Convention Center • Phoenix, Arizona
Campus Approach to Energy Management
Track 2: Agency Energy Manager – Session 6
Otto VanGeet, PE NREL August 12, 2015
Energy Exchange: Federal Sustainability for the Next Decade
Energy Efficiency, then Renewable Energy (EERE)
All new buildings should be as efficient as possible with the goal of net zero annual energy.
Determine the energy use and energy cost of existing buildings and infrastructure.
Reduce energy use by behavior, installing EE lighting, HVAC and controls and reducing plug loads.
Install RE (Solar, Wind, Biofuels) to meet remaining energy needs.
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Energy Exchange: Federal Sustainability for the Next Decade3
www.nrel.gov/applying_technologies/climate_neutral/
Energy Exchange: Federal Sustainability for the Next Decade
Campus Energy Path to Net Zero: Process Steps
Define the Campus Boundary & Energy Baseline
1. Use energy simulation tools such as eQUEST.2. Specify building energy requirements such as 50% less annual energy use
than ASHRAE 90.1 or IECC.3. All buildings to be net zero ready by 2020 for Federal (EO 13693), NZE by
2030, California (Title 24) all new residential construction must be NZE by 2020, commercial by 2030).
4. Design campus to encourage walking and biking5. Install EV charge stations and account for energy use.6. For existing campus conduct energy audit of buildings, transportation and
infrastructure, determine possible ECMs and savings.
1. Determine available unshaded built environment (rooftops, parking lots), brownfields and vacant land.
2. Convert available area into possible RE, (10 W/Ft2 for PV).3. Determine optimal mix of RE using REOpt and annual energy generation of
RE using tools such as REOpt, PVWatts and System Advisor Model (SAM).4. “Community solar or wind” is a new viable option5. If inadequate area to meet energy needs consider options to bring offsite
RE onsite such as bioenergy.
Minimize Campus Energy Use
Evaluate Renewable Energy Options
Grid Design & Integration
Finance & Implementation
Goal Setting1
2
3
4
5
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Energy Exchange: Federal Sustainability for the Next Decade
Net Zero Energy (NZE)
Net Zero Energy Buildings – Energy Performance based Acquisition methods, campus energy modeling to identify integration opportunities, passive efficiency measures that work, plug load strategies, net zero operations and informatics
NZEI & other mandates
ENERGY security & cost reduction
Understand baseline & past work
Identify focus areas
Conduct energy audits Implement conservation
campaign
Screen projects Past work
Efficiency & renewable Implementation strategy Microgrid capability
DEFINE GOALS & OBJECTIVES SET BASELINE PERFORM EE
ASSESSMENTPERFORM RE ASSESSMENT
DEVELOP NZEI STRATEGY
PROJECT DEVELOPMENT &
FINANCING
BEPTC & SROPTTC project development process
Appropriated & alternative financing
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Energy Exchange: Federal Sustainability for the Next Decade
Planning tool to evaluate RE, EE, microgrid, and operational energy opportunities
Recommends a mix of technologies and an operating strategy that meets client goals at minimum lifecycle cost
– Considers interactions between multiple technologies– Estimates costs and energy savings
Draws on site data, NREL GIS resource data, DSIRE incentive database, and RE technology info
Has been used to assess opportunities at ~800 sites Technologies currently modeled:
– PV– Wind– Solar hot water– Solar vent preheat– Biomass– Waste to energy– Landfill gas– Diesel and natural gas generators– Battery storage
Robust and adaptable to meet client goals
REopt Planning Tool
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Energy Exchange: Federal Sustainability for the Next Decade
REOpt: Platform for Energy System Integration and Optimization
Renewable & Fossil Mix Cost to Meet Goals Site Prioritization Sensitivity Analysis
Technology Types & Sizes Installation & Operating Cost Optimal Operating Strategies Demand Management
Operating Strategies for Microgrids & Forward Operating Bases
Generation & Storage Sizing Energy Security Evaluation
COST-EFFECTIVE PV AT ARMY BASES COST-OPTIMAL OPERATING STRATEGIES CORE MICROGRID DESIGN PROCESS
Master Planning Project Development
Energy Security Analysis
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Energy Exchange: Federal Sustainability for the Next Decade
EVALUATION OF EXISTING REPORTS
NZEI Assessment
Existing Generation
Existing Energy Management System
Energy Surety Plan
DATA GATHERING DESIGN ANALYSISINSTALLATION &
MONITORING
Grid Infrastructure
Generator Specifications
Load Profiles
Grid Operations/Valuing
Energy SecurityCommunication/
Cyber Security
Modeling & Studies: Power Flow Dynamic Stability Short Circuit
Financial Analysis
Controls
IndependentVerification& Validation
Construction
Selection of Integrator
Inform REP/Cost
Estimating
STEP 4 STEP 3 STEP 2STEP 1
Detailed Electrical Model
CORE Microgrid Design Process
CORE Microgrid Design Process is replicable.Currently being applied at multiple locations
Identifies potential solutions for acceptable levels of risk and economic value streams
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Energy Exchange: Federal Sustainability for the Next Decade
Photovoltaic Power Purchase Agreements
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Energy Exchange: Federal Sustainability for the Next Decade
Research Support Facility I (RSF) - 449 kW
RSF II - 408 kW Visitor parking lot - 524 kW Parking garage - 1,156 kW Mesa PV SAT - 720 kW S&TF - 94 kW Other = 100 kW Total - ~ 3,450 kW
NREL STM generates ~25% of its annual electricity needs from PV.
South Table Mountain (STM) Campus Onsite PV
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Energy Exchange: Federal Sustainability for the Next Decade
Uncontrolled Load Profile for a Net Zero Office Building
-2000
-1500
-1000
-500
0
500
1000
Car Charging
Total cooling
Total Lighting (kW)
Total Plug Loads (kW)
Total Mechanical (kW)
Total Data Center (kW)
PV (kW)
Net Building Utility Draw (kW)
Hou
rly
Elec
tric
ity
Use
(+) a
nd P
rodu
ction
(-) (
kW)
Energy Exchange: Federal Sustainability for the Next Decade
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NREL Campus Energy Use: May 2013
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Energy Exchange: Federal Sustainability for the Next Decade
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NREL Campus Energy Use: June 2013
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Energy Exchange: Federal Sustainability for the Next Decade
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NREL Campus Energy Use: July 2013
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Energy Exchange: Federal Sustainability for the Next Decade
Energy Generation, Integration and Reliability
Topical Areas Related to Installation Master Planning
Integrating Tools
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Renewable Fuel Heat Plant - ESPC• Wood chip heating plant• 10,000 million BTU• Displaces 50% of STM’s
campus natural gas usage • District hot water system
also used to distribute Data Center waste heat in swing seasons and summer.
720 KW
1,156 KW
524 KW
449 KW408 KW 94 KW
NREL PV Systems - South Table Mesa Campus
Otto VanGeet 303.384.7369 [email protected]
QUESTIONS?
50 KW