Solar steam generators

SUNCNIM designs, builds (EPC) and operates solar steam generators (SSG) for heavy oil production and process industries


  • CSP (Concentrated Solar Power) solar systems produce thermal energy (heat) through the use of mirrors. These systems focus solar radiation on a receiver
  • SUNCNIM has designed its own technology based on Fresnel mirrors. Several rows of slightly curved mirrors reflect the sunlight onto a fixed receiver tube called absorber. Water circulated through a pump is injected into the absorber and then heated by the concentrated sun’s rays

Some questions ?

The main advantages of SUNCNIM's technology

A simple and robust technology to provide the lowest cost of steam

Simple, robust, modular

  • Direct steam generation
  • Fixed receiver
  • Reflector made with flat glass mirror

Cost effective

  • Lowest cost of CSP technology for construction & operation
  • Use of standard materials
  • Fully automatic patented cleaning system with very low water consumption

High local content

  • Mobile workshop on project site to manufacture the reflectors
  • Contribute to local economic development and job creation
  • Standard materials easy to purchase locally

Main characteristics of the SUNCNIM module:

  • Dimensions: 67m x 18m, height 9m; 900m2 of mirrors,
  • Thermal energy output characteristics : water or saturated steam from 1 to 120 bars,
  • One driving actuator per module,
  • Modules assembled in lines (typically up to 500m), and lines in parallel,
  • Unit peak power: approx. 500kWth/module
SUNCNIM demonstrator in La Seyne sur Mer - France - In operation since 2010


SUNCNIM guarantees the annual energy production of the solar steam generator through simple indicators in order to monitor the level of performance. This performance guarantee is valid throughout the entire duration of the project: development phase, provisional and final acceptance of the system and normal operation by the customer. Our guarantee is based on the proven proprietary calculation software on  operation in the CSP demo plant in la Seyne-Sur-Mer since 2010

FraunFraunhofer ISE validated the thermal performance of SUNCNIM demonstrator in La Seyne sur Mer based on thermal in-situ measurements of test sequences in summer 2015

StageSUNCNIM is a member of the R&D EU program STAGE-STE which aims to define the future disruptive improvement of CSP technology.

SUNCNIM automatic cleaning robot

Local content

CNIM has designed and developed its solar technology taking into account the specificity of the target host countries. This development choice enables SUNCNIM Fresnel technology to have a strong local content compared to other CSP technologies

The components involved are simple; materials are low cost and commonly used on most markets. Furthermore, due to the simple design, the assembly and erection of the solar plant is directly carried out on site using temporary workshops thus creating local jobs close to the erection site

These features allow the CNIM technology to be a vector of energy development while guiding and encouraging local suppliers in the development of the local industry

Mobile workshop
SUNCNIM's local workshop to produce reflectors on site thus promoting local content and optimising construction cost


Related news