Transitioning to a Cleaner Energy Supply

Catalyzing climate solutions

…in the lab …in the classroom …on our campus

Commitment | University-wide on-site renewable energy studyCommitment | Explore renewable energy purchasing goal

Acting on Climate

Emissions Footprint

Energy Supply and Renewable Purchasing

• 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

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

• 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)

Hedged MegaWatt stack

Real Time Load versus Hedge

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

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.

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

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

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.