Stanford Equipment Inventory & Plug Load Reduction Project

2013-2015

November 2014

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• Project Design • Tools and Resources • Equipment Inventory – Summer 2014 • Results • Recommendations on Implementation • Monitoring

Agenda

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Goals1) Quantify campus plug load energy consumption2) Identify viable plug load reduction opportunities

Systemic Targeted

Project Overview

Other Partners:LBRE IT

Water group Procurement

DPMBuilding managers

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Room by room physical inventory conducted by Office of Sustainability interns

Visual only Information collected on

electronic equipment and relevant attributes

Data recorded in an internally developed web application

Energy consumption estimates applied for each type of equipment based on attributes recorded

Interns trained on identifying equipment, including IT

Inventory Description

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Data Collection Tool

• Interns used web application developed by LBRE IT to collect inventory data

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• Types of equipment included: • Standard office equipment• Personal computers• Monitors (LCD & CRT)

• Common IT equipment• Servers• Network switches• UPS devices

• Standard lab equipment• Kitchen & break room equipment• Gym equipment • Other (ex. Water fixtures and occupancy data)

• IT equipment primarily inventoried in IT closets in academic & office buildings

Inventory Scope

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Geographic Boundary

Geographic Boundary Square Footage

Zones A, B, C, D 7,000,000

School of Medicine 1,320,000

DAPER 602,000

Total 8,910,000

Inventory Area as Percent of Total Main

Campus GSF60%

Inventory Area as Percent of Total Main Campus GSF, without

R&DE

86%

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Results (A) – Campus-wide Context

Total Equipment Count 110,000

Total Energy Consumption (kWh/yr) 49,500,000

Total annual cost $6,840,000

Plug Load as % of Total Campus Electricity Use 22%

Plug Load as % of Electricity Use of 220

Bldgs32%

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Results (B) - Energy Consumption by Equipment Type

Results (C) – Networking Equipment

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Results (D) – Computing & Printing Equipment

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Plug Load Savings Profile

"Guaranteed" Savings4%

Likely Savings21%

Somewhat Likely9%

Remaining66%

• Of the plug load energy consumption on campus, 34% represents achievable savings, which is equivalent to 7% of total campus electricity consumption

• Viable Sustainable IT programs alone could save 20% of the campus’s plug load electricity consumption through:• Virtualization and consolidation

of servers• Adjust computer sleep settings• Adjust large networked

copy/printer sleep settings• Replace CRT monitors with LED

monitors

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Type of Equipment

Expected CostExpected Annual

SavingsAverage ROI

% Plug Load Reduction

Networking Equipment1 Unknown $1,295,0002 Unknown 19%

Computers $3,556,000 $221,600 16 years 3.2%

Large Networked Printers

$735,000 $31,470 23 years 0.5%

Small Networked Printers

$135,100 $24,980 5.4 years 0.4%

Personal Printers $136,700 $69,590 2.0 years 1.0%

Total $4,563,000 $1,643,000 2.8 years 24%

Sustainable IT Plug Load Reduction Program Options

1This does not fully represent the cost of server consolidation, which is currently underway and is largely sponsored by other departments. 2Includes avoided cooling costs from server consolidation and virtualization.

Note: Refer to “Sustainable IT Plug Load Reduction Program Summary” spreadsheet for details.

All Sustainable IT programs together have the potential to save $1.6 million annually.

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Office of Sustainability metrics and ratings are only estimates, especially around networking equipment

Feedback from group valuable in determining next steps Which programs make sense to implement from the perspective of your department or

school? What are some advantages and disadvantages of the programs listed that have not been

mentioned? What other viable program options might there be that have not been covered here? How else will this data to be helpful to your department/school?

Ex. Locations of computing & networking equipment How can the Office of Sustainability support Sustainable IT plug load reduction efforts? How can the Office of Sustainability support your department/school’s overall efforts?

Contact: Moira Hafer, mbhafer@stanford.edu Rashmi Sahai, rsahai@stanford.edu

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