1. Peak Solar Eclipse Preliminary Study Plan
Brett Wangen – Dir. Engineering Jason Ausmus – Mgr. Operations Planning

2. Aug 21, 2017 (Mon ≈ 8:00 – 11:15A PDT)

3. Eclipse Stats for Cities around Peak Footprint
City
Obscuration (Max Coverage)
Start of Partial Eclipse (PDT)
Max Eclipse (PDT)
End of Partial Eclipse (PDT)
Portland
99.35%
8:06A
9:19A
10:38A
Seattle
91.88%
8:08A
9:20A
10:39A
Vancouver, BC
85.90%
8:10A
9:21A
10:37A
San Francisco
75.51%
8:01A
9:15A
Los Angeles
62.19%
8:05A
10:44A
San Diego
57.50%
8:07A
9:23A
10:46A
Las Vegas
71.69%
8:09A
9:27A
10:53A
Phoenix
62.85%
8:13A
9:33A
11:00A
Salt Lake City
91.11%
10:59A
Denver
92.33%
8:23A
9:47A
11:14A
Albuquerque
73.31%
8:21A
9:45A
El Paso
60.85%
11:15A

4. Western States in Peak Footprint PV Installations
Source EIA
Capacity from Utility and
Small Scale Facilities
Does not include
residential and other
distribution connected
PV systems
State
Total MW AZ
2528.9 CO
707.9 ID
127.4 MT
8.1 NV
149.6 NM
604.5 UT
972.3 WY
2.2 CA OR
181.3 WA
78.9

5. Peak Gathering Data For Study
Build a case using forecast data
Estimate loss of PV generation using numbers from EIA
May estimate “worst case” BTM PV installations in more significantly affected systems
Historical reserves to make up loss of PV
Other known Operating Plans being enacted on 8/21/17 (e.g. more reserves, dispatching additional gen, etc.)

6. Peak Collaboration with NREL
Much speculation regarding how much behind the meter (BTM) PV is on the system
NREL in collaboration with Peak to analyze Aug 21st data to determine % BTM PV
Goal is to produce BA level percentages
May also assist in producing study cases to be used in preparation of the event. Details TBD.