Solar Electric Generating Station I CSP Project

This page provides information on Solar Electric Generating Station I CSP project, a concentrating solar power (CSP) project, with data organized by background, participants, and power plant configuration.

Project Overview

Power Station: Solar Electric Generating Station I
Location: Daggett
California United States
Owners (%): Cogentrix
Technology Parabolic Trough
Solar Resource: 2885
Nominal Capacity: 13.8 MW
Status Decommissioned
Start Year: 1984

Status Date

Status Date


Expected Generation (GWh/year) 16.5
Lat/Long Location 34.863,-116.827


Developer Luz
Operator Cogentrix
Electricity Generation Offtaker Southern California Edison


Total Construction Cost (2017) $ 62.10 million
Total Cost USD (2020) $129.34 million
Specific Cost/kW USD (2020) $ 9372.4
LCOE USD/kWh (2020) $ 0.67
Levelised cost of electricity with 5% weighted average cost of capital and a 25 year payback period, capacity dependent O&M (1.5% of investment cost per year), deflated from Year_operational using the Worldbank's GDP deflator; if station under development or construction then not deflated (assumed cost year 2020)
Support Scheme Type PPA
Policy Support Scheme PURPA Qualifying Facility Independent Power Producer, with special Standard Offer 2 (SO-2) type power purchase agreement to Southern California Edison
Concessional Funding or Other Support PURPA; Accelerated depreciation; Federal and state investment incentives; Solar property tax exclusion

Plant Configuration

Solar Field

Solar Field Aperture Area (m²) 82960
Collector/Heliostat Engineering or IP Owner Luz
Collector/Heliostat Model LS-1
Mirror Manufacturer Flabeg
Mirror Model RP1

Solar Field (Receiver)

Receiver Working Fluid Calloria mineral oil
Receiver Working Fluid Category Thermal oil/organics
Solar Field or Receiver Outlet Temperture (C) 307°C
Receiver Manufacturer Solel

Power Block

Nominal Turbine or Power Cycle Capacity 13.8 MW
Power Cycle Pressure (Bar) 40
Turbine Efficiency Percent 31.5
Cooling Type Wet

Thermal Energy Storage

Storage Type 2-tank direct
Storage Capacity (Hours) 3
Storage Description Storage system was damaged by fire in 1999 and was not replaced

The project data on these pages and in the downloadable CSV file is copyright (©) Institute for Advanced Sustainability Studies (IASS) and others 2022; data by Lilliestam@IASS, Thonig@IASS, Zang@CAS, Gilmanova@CAS and others. The data is licensed under a Creative Commons Attribution 4.0 International License.”