Milford's Microgrid & Energy Efficiency - Eastern Connecticut State ...

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Sep 17, 2015 - energy efficiency & reduce greenhouse emissions. Increase energy resiliency & reliability; benefi
Milford’s Microgrid & Energy Efficiency

September 17, 2015

Source: NASA

Source: Connecticut Weather, Inc.

Climate Change Mitigation Increase energy efficiency & reduce greenhouse emissions

Adaptation

Microgrid

Increase energy resiliency & reliability; benefit public health and safety

UI Outages from Irene

Source: reptonyhwang.com

Source: reptonyhwang.com

*Adjustment calculated using http://www.usinflationcalculator.com/

Vulnerable Coastal City

Storm Irene – Melba Street - Source: City of Milford

The mission of Milford’s Emergency Management Services Team is to protect:

Lives and Property

Respond

Aid Recovery

Microgrid Project Area

Microgrid Features • Islanding – all microgrid-enabled buildings can be powered by the microgrid during an emergency. • Key government, communications and emergency preparedness capabilities will continue to be operational by ensuring power to the Parson’s Government Center and at City Hall. • Parson’s Government Center, Senior Center, and Middle school will be available to supplement our primary shelter at J. Law High School.

Project Details • $2.9 million from round 2 of CT’s DEEP Microgrid Program • One 150kW and one 200 kW natural gas CHP units • 4 buildings operate in parallel to the utility grid; senior residences will be supplied with microgrid power during a central grid outage • Approx. 30kW backup battery system

Positive Feedback from a Strong Microgrid A strong microgrid creates a resilient system of power infrastructure

Clean power from microgrid helps to mitigate City’s carbon footprint & increase energy efficiency

A more reliable power generation system helps critical facilities to withstand extreme storms and adapt

CHP & PV Results - Annual Emissions Analysis – City of Milford CHP System (CHP Only)

Displaced Electricity Production (CHP + PV combined)

Displaced Thermal Production (CHP only)

Emissions/Fuel Reduction (CHP + PV combined)

Percent Reduction (CHP + PV combined)

Nox (tons/year)

0.18

1.16

1.01

1.98

91%

SO2 (tons/year)

0.01

2.07

0.01

2.07

100%

CO2 (tons/year)

1,728

1,932

1,181

1,385

44%

CH4 (tons/year)

0.03

0.061

0.02

0.051

61%

N2O (tons/year)

0.00

0.023

0.00

0.022

87%

Total GHGs (CO2e tons/year)

1,730

1,941

1,182

1,393

45%

Fuel Consumption (MMBtu/year)

29,568

23,296.36

20,204

15,697

32%

Equal to the annual GHG emissions from this many passenger vehicles:

264

Equal to the annual GHG emissions from the generation of electricity for this many homes:

173

Source: EPA Combined Heat and Power Partnership 2015

Lessons Learned • Conduct energy efficiency measures in buildings before determining the size of CHP units – also known as “right sizing the load” • Anticipate financing hurdles, such as State funding availability for the use of PV, when designing a microgrid • Work with “champions” on the project who are willing to cooperate with several different parties (i.e., local and state governments, utility, etc.)

Distributed Energy Generation is a Viable System

Thank You! Thanks to Chris Bleuher at Schneider Electric and Bill Dornbos at the Acadia Center for assistance with this presentation.