In view of the fact that CSP still faces the problems of high investment cost and high cost of electricity, the development mode of “CSP+” seems a good choice for building new plants.
In theory, “sparks” could be generated between the four main technical routes of CSP, CSP and traditional thermal power, CSP and other renewable energy, achieving the desired effect of complementarity and win-win.
1) parabolic trough + tower
Representative projects: Morocco Noor Ouarzazate solar complex, Dubai 700MW CSP plant
Parabolic trough + tower technology can combine the maturity of parabolic trough and the efficiency of tower, and improve the overall energy storage capacity of the project and reduce energy storage costs.
Panorama of NOOR Complex
2) Fresnel + Tower
Representative project: Japan Mitsubishi Fresnel Tower hybrid CSP system
This hybrid system can produce higher temperature steam at a lower cost than conventional CSP systems.
3) Dish + Parabolic trough / Tower
Although there are no large-scale commercialization projects in the above two development models, with the continuous development of dish-type CSP technology, these two development models are worth looking forward to in the future.
2. CSP + other clean energy
1)CSP + PV
Representative projects: Ashalim Solar Complex, Noor Midelt, Cerro Dominador, Noor Ouarzazate Solar Complex, etc.
There are many cases in which CSP + PV development model is adopted. This model can provide human beings with stable green energy while realizing relatively efficient and economical use of solar energy resources.
During CPC2018(China International CSP Station Conference 2018), Adil Bouabdallah from masen presented that Masen believes that the combination of CSP and PV will be the direction of solar energy’s future development. Through different proportions of configuration, there are 3 combined modes: CSP＞PV(CSP running day and night), CSP＝PV(CSP running all night and part time of day), CSP＜PV(CSP running only at night).
2) CSP + PV + wind power + energy storage
In such projects, CSP often uses its excellent peak-shaving capability to play a supporting role, but with the development of CSP technology, it is expected to continuously increase its proportion.
Representative project: China Luneng Haixi 700MW multi-energy complementary project
The Luneng Haixi 700MWmulti-energy complementary project is designed by China Northwest Electric Power Design Institute. It is located in Golmud City, Haixi Prefecture, Qinghai Province, with a total installed capacity of 700 MW, including 400 MW of wind power,200 MW of PV , 50 MW of CSP and 50 MW of energy storage.
3) CSP + PV + Geothermal
Representative Project: Stillwater Hybrid Power Station, Nevada, USA
4) CSP + biomass
Representative project: Termosolar Borges power station
3. CSP + traditional fossil fuel
1) CSP + gas
Representative project: Ain Beni Mathar ISCC Plant
The investment in power plants with hybrid power generation of solar energy and gas is higher than that of conventional gas power plants of the same power, but far lower than that of pure solar thermal power stations. At the same time, this hybrid power station has obvious advantages in terms of carbon dioxide emission reduction.
2) CSP + coal power
Representative project: Datang Tianweijia Shaoguan 10MW CSP Coal Complementary Project
3) CSP + fuel
Representative project: Duba1 project