1. General Motors Real Estate & Facilities planning and building for GM’s future Al Hildreth – GM Energy Baseline, Page 1 Baseline Energy Method Using EPA Energy Star Guideline Develop an Energy Baseline Identify Energy Drivers

2. General Motors Real Estate & Facilities planning and building for GM’s future Al Hildreth – GM Energy Baseline, Page 2 Assess Performance EPA Energy Star Guidelines

3. General Motors Real Estate & Facilities planning and building for GM’s future Al Hildreth – GM Energy Baseline, Page 3 Establish Energy Baseline EPA Energy Star Guidelines Analogous to DOE epep #4

4. General Motors Real Estate & Facilities planning and building for GM’s future Al Hildreth – GM Energy Baseline, Page 4 Normalize Data Options: Find major independent variables for normalization: - product output if uniform, e.g. engine, tires, vehicles, fascias… - weight if mixed output, e.g. stampings, casting operations… (tons produced) - revenue if mixture of output products: electrical components, fuel systems… - Area if warehouse, office (ft 2 ) - People if energy use correlates to number of people – research labs… - weather data if climate is major factor (otherwise use regression analysis and average HDD/CDD

5. General Motors Real Estate & Facilities planning and building for GM’s future Al Hildreth – GM Energy Baseline, Page 5 Baseline Example – unique product  Gather data for all energy, production units, climate (HDD & CDD) monthly for 3-4 years  Multi-Variate Regression Analysis o Dependent Variable  One for each Energy Source:  Electricity  Natural Gas  Coal  Xxxxx o Independent Variables  Production units  Heating Degree Days  Cooling Degree Days  other DependentIndependent Use Excel or other Multi-Variate Regression analysis to determine Correlation coefficients (r 2 ) = 0.9 or better explains 90% of dependence

6. General Motors Real Estate & Facilities planning and building for GM’s future Al Hildreth – GM Energy Baseline, Page 6 Regression Analysis Electricity Heat = Natural Gas + Landfill Gas

7. General Motors Real Estate & Facilities planning and building for GM’s future Al Hildreth – GM Energy Baseline, Page 7 Baseline Example – Normal Year  Establish Baseline Year, normalized by weather and production: o Find good correlations o Use coefficients in linear equation to forecast energy o Use forecasted production or average o Use average HDD & CDD  Normalize monthly energy with Production, MWh/Vehicle

8. General Motors Real Estate & Facilities planning and building for GM’s future Al Hildreth – GM Energy Baseline, Page 8 Benchmark EPA Energy Star Guidelines Energy Star has some EPI’s CDP posts Energy, Carbon, & Water Intensities for 6,000 companies

9. General Motors Real Estate & Facilities planning and building for GM’s future Al Hildreth – GM Energy Baseline, Page 9 Analyze Data EPA Energy Star Guidelines

10. General Motors Real Estate & Facilities planning and building for GM’s future Al Hildreth – GM Energy Baseline, Page 10 Technical Assessments EPA Energy Star Guidelines