SEGS I

General Info
Owner/s: 
Cogentrix
Technology: 
Parabolic trough
Country: 
US
Status: 
Operational
Purpose: 
Commercial
Usage: 
Electricity
Power: 
14.00 MW
Start date: 
December, 1984
Location: 
Dagget, California
Technology

Solar field

Solar Collector Assemblies - Trough: 
Luz LS-1
Mirrors / Reflective surface: 
Flabeg RP1
Reflecting area: 
82 960 m²
HTF Temp out: 
307ºC

Power block

Storage Y/N: 
Yes
Storage type: 
two tank direct - HTF
Storage: 
3.00 Hours
Power cycle: 
Steam Rankine
Power cycle pressure: 
40 bar
Turbine: 
MHI regenerative steam turbine
Turbine efficiency: 
31.5% at full load
Backup: 
No
Companies involved
Project developer: 
Luz
Key components suppliers: 
Flabeg
Suppliers details: 
Flabeg (Mirrors)
CCI (Valves)
Sulzer (Pumps)
Socioeconomics
Generation Offtaker: 
SCE
Other financing info: 

URPA Qualifying Facility Independent Power Producer, with special Standard Offer 2 (SO-2) type power purchase agreement to Southern California Edison.

Incentives:

  • Accelerated depreciation
  • Federal and state investment incentive
  • Solar property tax exclusion
Other
Solar resource: 
2 725 kWh/m2/yr
Solar resource source: 
NREL
Other info: 

Initially, the entire plant had three hours of thermal energy storage for dispatching electricity during periods of peak demand. However, a fire in 1999 damaged the storage system and it was not replaced.

General comments:

Initially, the entire plant had three hours of thermal energy storage for dispatching electricity during periods of peak demand. However, a fire in 1999 damaged the storage system and it was not replaced.

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