# Presentation: 376975

## MEAN Wind Project at Kimball

- Scheduling and Operations Impacts
- on MEAN and Western

- Presented by:
- John A. Krajewski, P.E.
- Manager of Planning & Engineering

## Background

- Municipal Energy Agency of Nebraska (MEAN)
- Wholesale electric provider to 46 total requirements participants in three states
- 13 participants located on LAP transmission system
- Third largest purchaser of power and energy from LAP

## Background

- MEAN Wind Project at Kimball
- 10.5 MW nameplate capacity
- Class IV-V wind site
- Interconnected to City of Kimball distribution system
- Low cost renewable energy resource

## Background

- MEAN developed Wind Project at Kimball to
- Serve load
- Meet obligations under Western’s Energy Planning and Management Program
- 	*“**Describe efforts to minimize adverse environmental effects of new resource and acquisitions.”*
- Prepare for renewable portfolio standards (if implemented)

## Regulation & Frequency Response Rate

- MEAN’s objections
- Excessive compared to nationally accepted study work
- 300% higher than other regions
- Incremental rate as opposed to embedded cost rate
- Discriminatory against intermittent renewable resources
- All resources impact regulation and frequency at some time
- Provided no bandwidth to coincide with scheduling requirements

## MEAN Operations

- Scheduling
- MEAN submits a pre-schedule for the Wind Project at Kimball every day
- Sometimes the pre-schedule is submitted up to 4-5 days in advance
- MEAN uses best efforts based on multiple forecasting techniques
- Many wind forecasts only 1 day in advance
- MEAN generally submits schedule changes as circumstances warrant

## MEAN Operations

- Wind scheduling realities
- MEAN does not just submit a flat schedule for all hours and leave it
- MEAN does not make unrealistic forecasts to match loads
- MEAN is not purposely leaning on the system

## Slide 8

## Slide 9

## Slide 10

## Slide 11

## MEAN Operations

- MEAN’s scheduling accuracy for wind has improved over time
- When combined with load schedule, imbalance outside of the bandwidth has improved
- MEAN incorporates diversity of wind and loads into scheduling
- Impact to control area is the same
- Illustrates importance of looking at entire system rather than individual pieces of the system

## Impacts on Western

- An intermittent renewable resource looks no different to the system than an intermittent load
- Both impacted by weather and human factors
- Irrigation, industrial loads, residential
- Both require unloaded resources to respond to changes
- Scheduling accuracy impacts need for regulation service for both

## Impacts on Western

- Differences in rate treatment (as proposed)
- Wind was singled out while the load is “socialized” and diversity impacts are considered
- Load serving entities with wind could be paying twice for same service
- Methodology completely inconsistent with accepted methodologies used elsewhere
- Xcel North, Bonneville, Iowa

## Impacts on Western

- Large merchant wind farms
- MEAN recognizes potential for large wind farms serving load outside control area to impact WACM
- Western should address these projects on case-by-case basis rather than a “one size fits all” approach
- Require telemetering to control area being served
- Require developer to procure its own load following resource

## MEAN Recommendations

- Western should develop guidelines that treat load and all resources serving load within the control area comparably
- Renewable and conventional resources should be charged the same
- Load serving entities shouldn’t pay for same service twice (on load and resource)
- Use nationally accepted methodologies

## MEAN Recommendations

- Large wind farms that do not serve load in the control area should be evaluated independently as part of the interconnection and transmission request process
- Requirement to telemeter resource to control area being served or procure load following resource elsewhere may be necessary

## QUESTIONS??

- For a copy of this presentation, contact
- jkrajewski@nmppenergy.org