# Presentation: 337627

## Combining Electric Power Surveys: The EIA-923

- Robert H. Rutchik
- Energy Information Administration
- Meeting of the American Statistical Association (ASA)
- Committee on Energy Statistics
- April 19, 2007
-        This is a working document prepared by the Energy Information Administration (EIA) in order to solicit advice and comment on statistical matters from the American Statistical Association Committee on Energy Statistics.  This topic will be discussed at EIA’s spring 2007 meeting with the Committee to be held April 19 and 20 2007.

## Purposes of Presentation

- Illustrate how EIA combined four surveys with different:
- Respondent populations
- Data reporting levels – e.g., plant level, boiler level
- Data
- Due dates
- Solicit Committee advice on:
- Planning a cognitive and a field test
- Notifying respondents on what they need to do to respond

## Current Respondent Populations

| EIA-423 | EIA-906 | EIA-920 | EIA-767 |
| --- | --- | --- | --- |
| Non-utility electricity generating plant or CHP plant if the plant’s total fossil-fueled nameplate generating capacity is 50 or more megawatts | All-electric power plants | All combined heat and power plants with a generating capacity of 1 megawatt and above | Existing or planned organic-fueled or combustible renewable steam-electric plants of 10 megawatts or greater |

## New Data in the EIA-923

| New For All Respondents | New For Some Respondents |
| --- | --- |
| Schedule 2. 
Total delivered cost
Commodity cost
Mercury content
Transportation Mode
MSHA Number | Schedule 2. Cost and quality data for fossil-fueled plants with generating capacity of 49 or less megawatts  |
| Schedule 4. Data Balance |  |

## EIA-923 Schedules and Data Reporting Levels

| Schedule
Schedules 1 through 5 are both monthly and annual. Schedules 6 through 8 are annual. | Steam Turbine Capacity of 10 Megawatts or Greater | Steam Turbine Capacity of 10 Megawatts or Less and Plants With Prime Movers Other Than Steam Turbines |
| --- | --- | --- |
| Schedule 1. Identification | Plant | Plant |
| Schedule 2. Cost and Quality | Plant | Plant |
| Schedule 3. Consumption  | Part A. Boiler | Part B. Prime Mover |
| Schedule 4. Stocks and Data Balance | Plant  | Plant |
| Schedule 5. Generation | Part A. Generator | Part B. Prime Mover |
| Schedule 6. Annual Disposition | Plant | Plant |
| Schedule 7. Annual Sales | Plant | Plant |
| Schedule 8. EIA-767 Annual | Boiler | Do not complete |

## Current and EIA-923 Due Dates

| Survey | EIA-423 | EIA-906 |  | EIA-920 |  | EIA-767 |
| --- | --- | --- | --- | --- | --- | --- |
| Reporting Frequency | Monthly | Monthly | Annual | Monthly | Annual | Annual |
| Current
Surveys
Due Dates | 45th calendar day following the close of the reporting month. | Last day of the month following the reporting period. | By March 1 | Last day of the month following the reporting period. | By March 1 | No later than April 30 following the close of the reporting year. |
| EIA-923
Due Dates | Monthly |  |  | Annual |  |  |
|  | Last day of the month following the reporting period. |  |  | By March 30 following the close of the reporting year. |  |  |

## EIA-923 Cognitive and Field Test in Limited Time

- Pick a random sample and send survey to whoever is selected
- Construct a stratified sample
- Two strata:
- Steam turbines 10 MW greater
- All other turbines
- Four strata:
- Steam turbines 10 MW greater monthly respondents
- Steam turbines 10 MW greater annual respondents
- All other plants monthly
- All other plants annual
- Separate out combined heat and power plants
- Other stratifications

## Notifying Respondents

- One respondent receives complete survey
- No respondent, though, will fill in every schedule
- How do we notify respondents about what schedules they will complete and how often?

## Questions for the Committee

- What is the best method to conduct a cognitive or field test with limited time to get the most valid and reliable results?
- What is the best strategy to notify respondents about the EIA-923?