parkville microgrid - energy exchange€¦ · city of hartford project consists of 800 kw baseload...
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Rhode Island Convention Center • Providence, Rhode Island
Parkville MicroGrid
Session: Enabling Technologies for Energy Resiliency
Antonio J. MattaHartford, CT
August 11, 2016
Energy Exchange: Federal Sustainability for the Next Decade
Create a stand‐alone MicroGrid that will link all services and through a fuel cell power source provide all of their electrical needs
Parkville MicroGrid
Concept– Hartford, CT has major power interruptions caused by storms resulting in loss of community services even with emergency generators
– Parkville cluster provides essential community services in one on‐site and two off‐site locations
– Services include: school, library, senior center, health center, grocery store and gasoline station
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Goal
Energy Exchange: Federal Sustainability for the Next Decade
School Library
Senior Center Health Center
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Parkville MicroGrid
Interconnected Facilities – on site
Energy Exchange: Federal Sustainability for the Next Decade
Grocery Store
Gasoline Station4
Parkville MicroGrid
Interconnected Facilities – off site
Energy Exchange: Federal Sustainability for the Next Decade5
Parkville MicroGrid
Site Plan
Energy Exchange: Federal Sustainability for the Next Decade6
Parkville MicroGrid
Context City of Hartford looking for a resilient power solution to serve critical community facilities that
could act as a refuge for residents during emergencies or bad weather
Results City of Hartford project consists of 800 kW baseload power with 640 kW of grid islanding
capability to provide a community MicroGrid.
Customer Value Constellation and Bloom Energy were able to provide a PPA to the City of Hartford that had
significant cost savings, avoided upfront capital for passive backup equipment, and met sustainability objectives through Bloom’s energy solution
Normal Output
Automatic Transfer Switch
Utility Grid (CL&P)
SchoolEm
erge
ncy
Nor
mal
Grid Islanding Output
Gas Station
Supermarket
Disconnect Switch
Automatic Transfer Switch
Emergency
Project Overview
Energy Exchange: Federal Sustainability for the Next Decade
– City of Hartford, Department of Public Works – customer
– Weston and Sampson – customer’s energy consultant
– Bloom Energy – fuel cell design and construction
– Constellation – overall design and project management, fuel cell and MicroGrid site design / interconnect and construction / system owner
– GI Energy / Van Zelm Engineers / Environmental Systems Design –Constellation’s consultants
– Eversource – MicroGrid design, construction and operation
– Connecticut Natural Gas – design and construction of high pressure gas line
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Parkville MicroGrid
The “Players”– Community
• Parkville School• Senior Center• Library
– Regulatory Committees• Parkville Neighborhood
Revitalization Zone• Planning and Zoning• Zoning Board of Appeals• CT Siting Council
Energy Exchange: Federal Sustainability for the Next Decade
– DEEP MicroGrid Grant ‐ $2,063,000
– City Financing (Municipal Bonds) ‐ $1,300,000
– Financial Incentives• Low Emission Renewable Energy Credits (LRECs)• Virtual Net Metering (VNM)
– Overall energy savings over current utility rates (projected) ‐ $500,000
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Parkville MicroGrid
Financial Components
Energy Exchange: Federal Sustainability for the Next Decade9
Parkville MicroGrid
Nov 2012
Jul 2013
Summer 2013 Fall 2013 – June 2015 June
2015Fall 2015
Dec 2015
CT DEEP Grant Program Released
Initial engagement with local development
companies and the City
First 9 grant recipients awarded
Development of the Project
Bloom PPA
signed
EPC contract negotiation
• EPC Contract Execution
• Permitting Approvals
• Detailed Design and Engineering Completed
Key Development Activities• Selection of generator technology: Initially CHP but lack of onsite heat load led to use of a Bloom fuel cell• CT LREC bid submission and award: Bidding strategy required to ensure you are “picked up” while protecting
project economics• Virtual Net Metering: Site load under normal conditions @ 20% of fuel cell output required a structure to export excess energy that is only used by the MicroGrid during grid outages
• Securing Eversource engagement and sign‐off: New model for all parties requiring a collaborative effort• Ensure adequate pipeline gas pressure: Dedicated high pressure gas line for Bloom fuel cell provides extra
reliability but greater upfront cost
Dec 2016
System COO
Fall 2016
Construction
Schedule
Energy Exchange: Federal Sustainability for the Next Decade10
Parkville MicroGrid
• Economically viable (at or below current cost of electricity)
– LREC (Low Renewable Energy Credit) help to solve this problem along with VNM (Virtual Net Metering)
– DEEP Grant • Technology selection: Very little thermal load
resulted in switch from a traditional engine to a Bloom fuel cell
• Technical hurdles – Gas pressure, Bloom MicroGrid, spare UPM, VNM
• Many players involved – City, Eversource, CNG, Constellation, Bloom, Bloom/Constellation
• Coordination and ability to migrate through varied complexities
• A MicroGrid system that will help manage electricity costs and supply emergency power to a portion of the city’s Parkville neighborhood
• Connecticut’s first MicroGrid to be developed thorough a public‐private effort
• One of the first MicroGrids to be developed under Connecticut’s Department of Energy & Environmental Protection (DEEP) MicroGrid Grant Program
• Proof that utilities, project developers, manufacturers, state and local government, and project owners CAN work together to make MicroGrids happen …
Challenges Results
Challenges and Results
Energy Exchange: Federal Sustainability for the Next Decade
Site clearing Underground Utilities
Fuel Cell Operational11
Parkville MicroGrid
Construction Photographs
Energy Exchange: Federal Sustainability for the Next Decade
• Contact Information– Antonio J. Matta– City Architect– Hartford, CT– [email protected]– (860) 757‐9982
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