AlfaTech Sustainability Presentation 2020

ELECTRICITY – Water - Energy Nexus

Energy CO2 Intensity & Water Consumption

Water Consumption Gallons/kWh

Water Consumption Gallons/kWh

Carbon Intensity • Carbon is released to atmosphere when electricity is generated. In U.S., this metric varies from 0.057 to 2.026 with the average value of 1 lb per kWh. • If the state has high carbon intensity electrical generation, “decarbonization” at building level can cause more harm to the environment. Water Consumption • Water is utilized for different processes during electrical generation. Water withdrawal and consumption factors vary greatly by the type of the fuel used. U.S. average is 2 gallons per kWh. • Water is required for energy generation and energy is required to extract, clean and deliver water. • If the state water consumption is high, “decarbonization” at building level can be problematic in draught zones.

lb CO2/kWh

lb CO2/kWh

Rank

State

Rank

State

1 2 3 4 5 6 7 8 9

Vermont

0.057 0.187 0.189 0.306 0.337 0.453 0.464 0.498 0.513 0.558 0.629 0.77 0.811 0.814 0.821 0.855 0.867 0.871 0.879 0.887 0.913 0.926 0.932 0.941

0.25

27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51

Tennessee

0.992 0.998 1.002 1.013 1.013 1.024 1.044 1.05 1.116 1.196 1.251 1.281 1.389 1.466 1.468 1.522 1.573 1.627 1.688 1.813 1.954 1.1

3.6

Washington

2.7

Iowa

0.11 1.65 0.41 0.21 0.14 8.39 0.43 0.48 0.26 0.58 0.46 0.94 0.04 1.13 3.05 5.13 0.41 5.32 0.58 4.15 1.2 0.3 0.3

Idaho

7.85 3.71 0.12 4.64 1.62 1.61 0.07 0.1

Georgia Minnesota Maryland

Oregon

New Hampshire 0.311

Maine

Florida

California New York

Oklahoma

Texas

District of Columbia 0.482

Michigan Arkansas Kansas Montana Nebraska Wisconsin

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

Connecticut South Dakota New Jersey South Carolina

72.64 0.07 0.25 7,25 1.05 0.06

16.74

Nevada Illinois Virginia

Ohio

Colorado

Massachusetts Pennsylvania North Carolina Rhode Island

0

Hawaii

0.53 0.55 1.47 0.01 0.27 7.85 0.37 0 2.5

New Mexico

Utah

North Dakota 1.664

Louisiana Delaware Alabama

Missouri Indiana Kentucky

Alaska Arizona

West Virginia 1.976

Wyoming

2.026

US Average

1

2

Mississippi

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