1. SOLAR PROGRAMS
Presented By
Benjamin H. Jordan, P.E.
4/2016

2. Agenda Current Distributed Generation Installations New Solar Programs
Preparing for High Solar Penetration
Summary

3. Current Solar installations
Transmission (138kV) Solar MW
Distribution (34.5kV, 13.2kV) MW
Methane (34.5kV,13.2kV) MW
Rooftop Solar MW
Residential solar installations rate 62/month
Commercial solar installations rate 4/month
Residential Commercial 250+
Estimated 22,000 homes powered

5. OCI – ALAMO1
OCI Alamo 1 Solar power plant modeled as a single 41 MW generator on the 138 kV transmission system
Results of the Power Flow, Short-Circuit, and Transient Stability studies indicate that no additional system improvements were needed
To meet ERCOT reactive power requirement, OCI added: Mvar capacitors and Mvar reactors

6. utility scale DG

7. Methane - Tessman Road

8. Solar 2015

9. Solar programs

10. Solar programs

11. roofless program
Roofless Solar – Clean Energy Collective - 1MW tracking site
Purchase Power Agreement Executed
Site feasibility study complete
Site expected to be on line 4th Qtr. 2016
Currently have 300kW reserved
Panels are approximately Watt panels
11,280 modules

12. roofless program

13. Solar host sa Program
SolarHostSA- Starting at 1MW potentially up to 5MW
New process evaluation for the program initiated
Initiated a preliminary desk top review requirement
Program is intended be spread over the service territory and avoid clustering
Incorporated inverter functionality evaluation into the program

14. Solar host sa schedule SolarHostSA- Starting at 1MW
The systems will be split in ½, 500kW Residential and 500kW Commercial
Residential installs will be approximately 420 with an average system size of 6kW.
Commercial installs will e approximately 25 with an average size of 100kW.
Expected completion 12/2016

15. Inverter requirements
The Smart inverter shall have the ability to receive firmware updates over the air
The smart inverter shall have the ability to receive autonomous setting updates over the air
Smart Inverter shall be able to support cellular and RF communication
Functionality will need to be IEEE 1547 approved before it can be enabled in the smart inverters
All functionality requires UL 1741 certification prior to being enabled on the smart Inverters

16. Inverter functionality
Inverter Use Cases
Anti-Islanding – Pending UL 1741 certification and amended IEEE 1547 approved
Soft-Start Reconnection – ramping algorithm
Low/High Voltage Ride Through – Pending California Rule 21, UL certification, and proposed amendment to IEC 1547
Low/High Frequency Ride Through – Pending California Rule 21, UL certification, and proposed amendment to IEC 1547
Volt/Var Mode – Pending California Rule 21 settings
Reactive Power Control – Manufacturers are in beginning stages of testing
Remote On/Off

17. Solar

18. Solar adoption Prediction

19. Future solar preparation
Evaluate inverter control and communication methods
Test inverter grouping methods from smart inverter deployment
Inverter functionality review
Stay in tune with the industry changes
Solar cluster evaluations
Monitoring solar penetration levels per phase
Setting solar penetration levels that trigger studies
AMI data aggregation
Improve solar modeling

20. summary
New analysis methods, tools and data will be required as our industry evolves and solar becomes more prevalent.
Solar program expansion requires early involvement and preparation
CPS Energy will continue to operate the distribution system efficiently, safely and reliably.

21. Questions?

22. Manager Distribution Planning
Thank You For Your Time
Contact Information
Benjamin H. Jordan, P.E.
Manager Distribution Planning