transitioning to a cleaner energy supply. catalyzing climate solutions …in the lab …in the...
TRANSCRIPT
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Transitioning to a Cleaner Energy Supply
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Catalyzing climate solutions
…in the lab …in the classroom …on our campus
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Commitment | University-wide on-site renewable energy studyCommitment | Explore renewable energy purchasing goal
Acting on Climate
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Emissions Footprint
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Energy Supply and Renewable Purchasing
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• Produce, procure, and distribute energy throughout Cambridge and Allston.
• Steam plant with cogeneration, two interconnected chilled water plants, and electric microgrid
• Blackstone fuel input: 1.2 Million MMBTUs
• Electric consumed: 236 Million kWHs
• Cooling: 290,0000 MMBTUs
Cambridge / Allston Energy Infrastructure
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Fuel
Fuel
BOILER
BOILER
MEDIUM PRESSURE STEAM
Electricity from CHP BACK PRESSURE TURBINE
HEATRECOVERY
Fuel COMBUSTION TURBINE
BOILER
BOILER
Fuel
Fuel
Exhaust
Electricity from CHP
HIG
H P
RESS
URE
STE
AM
Blackstone Plant Configuration
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• 501c3 membership corporation, Massachusetts licensed electric retailer, buy power wholesale through ISO-New England market, utilize outsourced back office, external market consultants
• Model campus consumption through historical patterns and trends. Hedge next several years through layered purchasing (24x7 / 5x16) with multiple suppliers
• All energy purchases are physical internal bilateral agreements
Harvard Dedicated Energy Limited (HDEL)
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Hedged MegaWatt stack
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Real Time Load versus Hedge
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Consumption vs. Local Production
• Campus Consumption: 236,000,000 kWhs
• Blackstone turbine: ~ 16,000,000
• Athletics PV: 514,000
• Tata Hall PV: 95,000
• Morgan PV: 53,000
• Shad PV: 35,000
• Gutman PV: 5,000
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2014 Renewable Energy Certificates (RECs)
• Renewable Energy Portfolio Standard (RPS) – statutory obligation for HDEL, must obtain percentage of electricity (currently 17.75%) from qualifying units. Percentage increases each year.
• RPS Class I – 9% (8% + 1% solar carve out)
• RPS Class II – 1.75%
• Waste Energy – 3.5%
• Alternative Energy Portfolio – 3.5%
• HDEL meets its obligation through series of contracts, largest is a REC plus Energy contract with Stetson II wind project.
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ISO-NE Grid
Winter Peak Mix – Natural Gas Constrained
24%
26%
6%
8%
10%
25%
January 2014
Average Annual Fuel Mix Getting Cleaner
Source: ISO-New England 2015 Regional Electricity Outlook
15%
31%
8%
7%
22%
44%
34%
9%
5%
8%
1%
18%
20142000
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Central Utility GHG Impacts
• Blackstone fuel switch - oil to natural gas: 16,400 Metric Tons of Carbon Dioxide Equivalent (MTCDE)
• Existing backpressure turbine: 5,600 MTCDE
• New combustion turbine: forecast 8,000 – 9,000 MTCDE
• Also, significant improvements on central systems (such as new boiler, blow down heat recovery, VFD chillers, winter free cooling, etc.) reduced another ~ 2,000 MTCDE
• Total GHG Reduction over 32,000 MTCDE
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Achieving Deeper GHG Reduction
• University-wide renewable energy study to assess on-campus opportunities and strategy.
• Faculty advising on off-campus GHG emissions reduction opportunities.
• Post-2016 Goal: Task Force will be convened to set the next science-based GHG reduction goal.
• Track and analyze Scope 3 emissions.