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.