Steam Generation System for CSP Plants, UAE

Aalborg CSP has received the largest order in terms of megawatt power to deliver steam generator systems based on the leakage-free header-and-coil technology for three CSP plants in Dubai, each providing 200 MWe totalling 600 MWe for the largest CSP project in the world. When completed, the solar park will provide clean energy to more than 270,000 residences in Dubai, while reducing the carbon emissions by 1.4 million tonnes per year.


Client:     Shanghai Electric Power Generation Engineering Co.
End user:
   ACWA Power
Dubai Electricity & Water Authority (DEWA)
Location:    Dubai, United Arab Emirates (UAE)
Status:    Under construction

The Dubai 700MW CSP + 250MW PV Hybrid Project

The record-breaking Dubai 700MW CSP+250MW PV Hybrid project developed by ACWA Power, with Shanghai Electric Group Corporation as EPC constitutes the fourth phase of the Mohammad Bin Rashid Al Maktoum Solar Park and is an important part of Dubai’s Clean Energy Strategy – a strategy under which 75 % of Dubai’s energy will be generated from clean sources by 2050. When completed, the solar park will provide clean energy to more than 270,000 residences in Dubai, while reducing the carbon emissions by 1.4 million tonnes per year.

Header-and-coil technology preferred over standard shell-and-tube type

With the steam generator systems from Aalborg CSP, the Dubai 700 MWe CSP Project will benefit from state-of-the-art boiler designed heat exchangers based on the header-and-coil technology. The header-and-coil design from Aalborg CSP originates from traditional boiler technology and is a 100 % welded coils type based on steam boiler technology, rather than a conventional TEMA-type based steam generator using U-tube design. The header-and-coil design has a higher availability from the no leakages design and thus lower operation and maintenance cost. Since Aalborg CSP’s entry on the CSP market, the company’s steam generator technology has won several international awards, due to its no-leakage design and higher performance features. In 2019, Aalborg CSP celebrates its 10-year anniversary for no leaks in header-and-coil.

Eliminating leakages with header-and-coil technology

Leakages are one of the main causes for breakdowns causing unplanned downtime for CSP plants and is considered a major quality issue within heat exchangers and steam generation systems for CSP plants. During repairs, the steam generator is drained and cooled down resulting in massive loss of revenue, as the system cannot produce steam while repairs are made. The majority of TEMA U-tube type equipment has leaking issues, as it is not suited for the frequent system starts/stops and load changes in large-scale CSP plants.

The header and coil type equipment on the other hand possesses the ability of absorbing the dynamic loads and thermal stress of large-scale CSP plants. This technology eliminates leakages, avoiding unnecessary maintenance and system downtime.

Due to the patented header-and-coil design for CSP applications, Aalborg CSP is capable of demonstrating a proven track record of 10 years leakage-free operation, which presents the client with the optimal amount of availability and thereby productivity, electricity revenue and the general payback time of the power plant are greatly improved to lower the cost of energy.


Project name: Dubai 700MW CSP+250MW PV Hybrid Project
Plant capacity: 950 MWe (CSP plants: 600 MWe, tower: 100 MWe, PV: 250 MWe)
Technology type: Parabolic troughs with thermal oil in the receiver pipes + solar tower + PV plant
Plant layout: 44 km2 solar field with parabolic troughs + PV panels
HTF temperature: 393 ºC
Energy storage capacity: 15 hours/day
Lifetime of the plant: 35 years


Supplied technology:  SGS3 steam generation system
Scope of supply: 

2 trains of SGS3 steam generators including safety valves for the pressure vessels

Steam temperature:  385 ºC
Steam production: 217 kg/s
Steam pressure: 109.6 bara
Ramp-up rate: 10 ºC/min
System warranty:  5-years no-leakage and 5-years no fouling warranty

About author

Aalborg CSP is a leading developer and supplier of innovative renewable technologies aiming to change the way energy is produced today.

Primary contact
Sofie Lambrechtsen Larsen

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