Proposed Houston Solar Community Project

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ProposedHouston Solar Community Project

• A Renewables Integration and Smart Grid
  Demonstration
• Presented to
• CCET Board of Directors
• January 9, 2009

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Presentation Overview

• I. Project Background, Objectives, and Status
• II. Description of Individual Tasks for Planning
  Document (In Preparation)
• III. Questions, Comments, Discussion

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Purposes

• Understand how a large renewable energy
  Distributed Generation source a) will interact
  with the grid and b)its overall electrical
  patterns.
• 2. Test technical and economic aspects of other
  emerging technologies including community and
  home battery storage, electric vehicle charging,
  load controllable appliances, wind integration,
  and interoperabilty of devices.

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Purposes (Cont)

• 3. Evaluate the above combined with an Enhanced
  DR community-based DR program
• 4. Recommend policy changes needed to eliminate
  barriers to these type of developments and
  technologies.

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Project Overview--Status

• Two TAG meetings on-site with Land Tejas
• Several concept papers
• One meeting on site with Energy Efficiency
  program managers from Oncor and CenterPoint--want
  a more detailed Project Plan by early February
• Project Plan to CCET Board in March

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Project BackgroundDiscovery at Spring Trails
Baseline

• Land Tejas building a 3000-home master-planned
  community north of Houston
• Each home will have between 1 and 3 Kw of rooftop
  photovoltaic and meet extremely rigorous energy
  conserving requirements
• Overall electric savings is in 30 to 40
• Community will operate a 250 kW solar farm to
  offset community infrastructure needs
• AMI on residences by CenterPoint

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Project Overview (Cont)

• Duration 4 to 5 years
• Costs 2.7 million (rough estimate)
• Funding
• a) Energy Efficiency program (RD or MT)
• b) EPRI (tailored collaboration)
• c) DoE (either part of Regional Demonstation
  Program or other)
• d) NSF (for participating university
  researchers)

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Presentation Overview

• I. Project Background, Objectives, and Status
• II. Description of Individual Tasks for Project
  Plan (In Preparation)
• III. Questions and Answers

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Project Plan Contents

• 1. Purposes
• 2. Executive Summary
• 3. Discovery at Spring Trails Development Plan
• 4. Project Tasks and Schedule
• 5. Project Costs
• 6. Participants and Roles
• 7. Project Management
• 8. Detailed Task Descriptions
• 9. Project Funding Plan

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• 10 Years Developing in the Houston area
• Averaged 2000 lot sales per year
• Resort style communities with reasonably-priced
  homes 130s 400s
• Environmentally Friendly Energy Efficient
• Mandates technologies throughout communities

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Land Tejas Development Team
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Location and Amenities

• Spring, Tx, Montgomery County, piney woods along
  Spring Creek
• 1200 Acres - 3000 1-3 kW Solar Homes
• Rec. Center, Clubhouse, Lakes, Trails
• Fiber to Home Network - Energy Mgmt
• Community-Wide Water Reuse Program
• 250 kW central solar array

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Project Plan Contents

• 1. Purposes
• 2. Executive Summary
• 3. Discovery at Spring Trails Development Plan
• 4. Project Tasks and Schedule
• 5. Project Costs
• 6. Participants and Roles
• 7. Project Management
• 8. Detailed Task Descriptions
• 9. Project Funding Plan

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Project Tasks and Schedule13 Tasks

• 1. Baseline power monitoring,
• 2. Comparative energy use profiles,
• 3. Decentr. EV charging
• 4. Centralized EV chrg.
• 5. Decentr battery strg.
• 6. Community bat.strg.
• 7. Enhanced DR Ph. I
• 8. Enhanced DR Ph. 2
• 9. Load interruptible appliances
• 10. Storing wind generated power
• 11. Interoperability
• 12. Univ. Research Prjs
• 13. Data integration and analysis

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Overall Schedule

• 2009Baseline Monitoring, Submit Proposals.
• 2010Begin all tasks except Phase II Enhanced DR
  and Decentralized Battery Storage.
• 2011-All tasks underway with Phase I DR
  completed.
• 2012All tasks underway.
• 2013--Project completion and Final Reporting

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Project Plan Contents

• 1. Purpose
• 2. Executive Summary
• 3. Discovery at Spring Trails Development Plan
• 4. Project Tasks and Schedule
• 5. Project Costs
• 6. Participants and Roles
• 7. Project Management
• 8. Detailed Task Descriptions

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Overall Costs (Rough Estimate)

• Capital Costs Battery Storage gt600,000,
  monitoring and measurements gt200,000, Other
  250,000 for 1.1 million
• Labor and services University research
  projects, data gathering and analysis, management
  and integration contractor 1.6 million
• As project gets better defined and individual
  cost estimates come in, better precision.

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Project Plan Contents

• 1. Purpose
• 2. Executive Summary
• 3. Discovery at Spring Trails Development Plan
• 4. Project Tasks and Schedule
• 5. Project Costs
• 6. Participants and Roles
• 7. Project Management
• 8. Detailed Task Descriptions
• 9. Funding Plan

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Some Possible Participants and Roles

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Project Plan Contents

• 1. Purpose
• 2. Executive Summary
• 3. Discovery at Spring Trails Development Plan
• 4. Project Tasks and Schedule
• 5. Project Costs
• 6. Participants and Roles
• 7. Project Management
• 8. Detailed Task Descriptions
• 9. Funding Plan

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Project Management

• CCET Management Team
• Direct Funders and,
• In-Kind Service Providers (including Land Tejas)
• PI, Management and/or Integrating Contractor
  reporting to CCET COO

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Project Plan Contents

• 1. Purpose
• 2. Executive Summary
• 3. Discovery at Spring Trails Development Plan
• 4. Project Tasks and Schedule
• 5. Project Costs
• 6. Participants and Roles
• 7. Project Management
• 8. Detailed Task Descriptions
• 9. Funding Plan

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Project PlanSection 8 Details

• 1. Purpose
• 2. Subtasks
• 3. Schedules and
• Milestones
• 4. Equipment
• 5. Labor
• 6. Data flows
• 7. Costs (materials, time)
• 8. Data analysis, task integration
• 9. Unresolved issues

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Task 1Baseline Power Monitoring

• Purpose
• To measure voltages and power flows within
  the community and along the feeder serving the
  community to better understand impacts of
  distributed renewable generation.
• Author CenterPoint
• Status Rough draft was submitted this week

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Task 2Comparative Energy Use Profiles

• Purpose To provide quantifiable energy savings
  from Discovery at Spring Trails (DST) both as a
  community and individual homes vis-à-vis very
  similar adjacent masterplanned community without
  solar and ultra high efficiency measures.
• Author CenterPoint
• Status Rough draft received this week.

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Task 3Decentralized EV/PHEV Charging

• Purpose Determine demand patterns for
  garage-based electric vehicle charging systems
• Author CenterPoint
• Status No drafts received

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Task4Centralized EV Charging

• Purpose Design, construct, demonstrate and
  evaluate a community-based electric vehicle
  overnight charging station
• Author CenterPoint
• Status No drafts received

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Task 5Decentralized Battery Storage

• Purpose Evaluate cost effectiveness of
  individual residential battery storage units
• Author GridPoint
• Status Cost estimates received, no write up

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Task 6Centralized Battery Storage

• Purpose Determine how large scale community
  battery storage could be used with 250 kW solar
  array as a possible DSM resource and in future
  micro grid application.
• Author Xtreme Power? Others?
• Status Rough price estimate from Xtreme Power

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Task 7Community Wide Enhanced DR Phase I
Critical Peak Pricing

• Purpose Demonstrate and evaluate efficacy of a
  critical peak pricing-based DR program in a
  masterplanned green community designed
  cooperatively. To be designed by several REPs
  with one REP serving as load aggregator.
• Author Bob Davis (need inputs from REPs)
• Status Strawman only

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Critical Peak Pricing Strawman

• Ten to 20 times per year residents who opt into
  the program will be given one days notice of a
  CPP event
• Rates during event may five times normal
• 100 residences allowed to participate in exchange
  for cash awards
• One cooling season (May through Sept 2010) Phase
  I
• Could be combined with a summer time on-peak and
  off-peak time of use rates

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Task 8Community Wide Enhanced DR Phase II Real
Time Pricing

• Purpose Demonstrate use of real time pricing in
  a masterplanned green community
• Author Bob Davis (need inputs from REPs)
• Status Strawman only

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Real Time Pricing

• Access real time wholesale prices via ERCOT
• Develop pricing program
• Measure demand price responsiveness through a
  cooperatively developed offer to the aggregated
  load manager
• One full year duration (2011)
• Phase IIa in third year (2012)in which REPs
  develop proprietary real time pricing with
  limited data sharing among all participants

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Task 9DR with Interruptible Load Appliances

• Purpose Demonstrate use of load controllable
  appliances in HAN and Enhanced DR
• Author GE (Patrick McElheny)
• Status Write up underway

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GE Load Controllable Devices
Signal from REP
Smart Electrical Communications Hub
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Task 10Wind Integration/ Storage

• PurposeEvaluate feasibility of storing wind
  generated power via PPA for storage on site in
  community battery storage.
• Author None
• Status No action

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Task 11Interoperability Analyses

• Purpose Assess features of communication within
  the home and outside the meter to determine needs
  for application of standards.
• Author None
• Status No action

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Task 12University Research Agenda

• Purpose Conduct targeted RD to deal with
  issues arising in the preceding tasks (e.g.,
  improving charging efficiencies in centralized
  station, evaluating DR programs, interoperability
  issues, etc)
• Author None
• Status No action

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Task 13Data Integration and Analyses

• Purpose Assure that methods and quality of data
  collected is uniform and sufficient to support
  the objectives of each task.
• Author None
• Status No action

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Questions?