1. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis Premium Power for Colocation Telecom Power Infrastructure Analysis February 27, 2001 Gary Hoogeveen, Ph.D. MidAmerican Energy Holdings Company

2. Telecom Power Infrastructure Analysis 2 Overview U.S. Power Issues that Affect the Data Center Industry The Escalation of Power Requirements in Data Centers

3. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 3 Status of the U.S. Electricity Industry

4. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 4 2001 Percent Over/Under Target Reserve Margins (high demand/low supply projection) NWPA 0 ERCOT 14.3 RMPA 20.9 AZNMA/CANVA -5.2 MAPP -2.3 SPP 2.5 ECAR/MAIN 3.4 SERC -2.0 FRCC -4.7 NEPOOL 18.0 MAAC -4.7 NYPP 4.4 New York City -5.0 Undersupply Oversupply

5. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 5 2004 Percent Over/Under Target Reserve Margins (high demand/low supply projection) NWPA -3.2 RMPA 4.5 ERCOT 2.5 AZNMA/CANVA -20.1 MAPP -16.5 SPP -6.8 ECAR/MAIN -7.5 SERC -11.6 FRCC -10.0 MAAC -15.4 NYPP -2.6 NEPOOL 9.3 New York City -20.0 Undersupply Oversupply

6. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 6 Transmission Congestion Problem Areas New York City

7. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 7 Low Price $1.046 on January 24, 1992 High Price $9.978 on December 27, 2000

8. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 8 Low Price $1.046 on January 24, 1992 High Price $9.978 on December 27, 2000 Low Price $1.046 on January 24, 1992 High Price $9.978 on December 27, 2000

9. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 9 Power Quality Issues Data centers have power quality issues. What’s the solution? 1.Treat the symptoms at each individual data center, even though the disease exists within the grid. OR 2.Cure the problem by designing your own grid and removing power quality viruses like aluminum smelters, steel plants, and so on from your system.

10. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 10

11. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 11

12. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 12 Summary of US Power Issues Power availability may become limiting factor in data center development. Higher natural gas prices will result in higher electricity costs. The grid is 99.9% (at best) reliable and not getting better. The California crisis has increased regulatory uncertainty nation wide. –Uncertainty is death to new power infrastructure investments.

13. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 13 Data Center Demand Escalation

14. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 14 Data Center Demand Analysis Current and projected Data Center (including Colo, Gateways, Network facilities, etc.) demand exceed current and planned supply Current Data Centers do not support all of the following: –Some current and nearly all projected computing power densities –Upgrading beyond 150 watts/sq ft of raised floor Power and cooling limitations because of physical plant –99.99% uptime (tier 3 and 4 Data Centers) * –Unlimited bandwidth (not on backbones)  New, high-capability, long-life Data Centers will be built –Dispersed – individually built –Concentrated – in Parks * Uptime Institute

15. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 15 Two Significant Impacts on Infrastructure 1.Quality of Data Center –Increased quality increases physical plant support equipment (N+1, System+System) which increases non-productive (cooling, UPS losses, etc.) power requirements 2.Power Density (watts/sq ft) –Increased power density increases physical plant support space as a percentage of raised floor space

16. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 16 Quality of Data Center Power required to cool a watt of heat created by computers is approximately a watt Facilities requiring significant power at data center Chillers UPSs (due to power conversion losses) Computer Room Air Conditioner (CRACs) – Note, since CRACs are traditionally on the raised floor, they actually contribute heat as they cool Higher quality data centers require System+System redundancy, increasing the power draw by physical plant

17. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 17 Power Density Trends Current data centers built to 30-75 watts / sf New installations averaging 125 watts / sf demand Dense rack-mounted servers can theoretically push demand to 600 watts / sf, or close to 20,000 watts per cabinet Computing power density will continue to go up New generations of CPU are hotter Itanium Sparc III More CPUs are being put into smaller servers

18. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 18 Power Density Trends

19. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 19 How Did This Come on So Fast? Server density (illustrated in previous slide) Movement of disk off the server Each generation of CPU is hotter than the last More CPUs are being put into small rack-mounted servers Rack mounted server form factor has shrunk in size dramatically Under-utilized server capacity Movement from larger multi-purpose computing work loads on servers running at > 70% utilization to many small single- purpose servers running at 15-25% utilization Installation of redundant servers, further decreasing utilization Under-utilized servers still draw full power Consolidating distributed computing back to data centers Lack of skills to run distributed systems Emergence of servers as critical to business

20. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 20 What To Do? Continue to build small data centers distributed throughout the power / telecom networks Emerging inhibitors to building new facilities (mostly power related) No economies of scale Build larger data centers with on-site power, cooling and telecom Economies of scale Concentration of telecom points of presence

21. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 21 Implications to the Telecom Industry Power Densities are increasing: Requiring more HVAC and Power per square foot Alternative site deployments (either centralized or decentralized) Heightened awareness of power problems affects: Growth of data centers Growth of power generation facilities Power stresses may impact costs for Service providers and consumers Telecom providers may be charged a premium for power which eventually would impact consumers Poor power quality require service provider to over engineer at the edge which increases costs

22. MidAmerican Energy Holdings Company Telecom Power Infrastructure Analysis 22 Call to Action NRIC V Chair proposes that, subject to available funding, the appropriate FG initiate a “Study on Potential Power Issues in the US and their impact on the Nation’s Communications Networks” This study should include: Region by region assessment of potential power shortages Region by region view of Data Center concentration Assessment of Power Plant construction currently underway in the US Identification of potential gap in power supply and demand project for 5 years This Study should result in a Paper and presentation to NRIC V