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29 Jan 2014 03:01:40

CSP will adapt to South Africa’s electricity demand curve



Demand for electricity in South Africa has increased progressively over several years and the grid now faces supply and demand challenges. As a result, the Department of Energy has implemented a new Integrated Resource Plan to enhance generation capacity and promote energy efficiency. Photovoltaics (PV) and concentrated solar power (CSP) are set to be the main beneficiaries from the new plan having their initial allocation raised considerably.

Daily electricity demand in South Africa has a morning and evening peak, both in summer and winter. This characteristic makes CSP with storage a very attractive technology for generating electricity on a large scale compared to PV, which currently can provide electricity at a cheaper price, but its capability to match the demand is limited to the morning demand peak.

As experts highlight, CSP is the only renewable technology that provides dispatchable electricity that adapts to the demand curve, though at a higher price than PV. However, the government in South Africa has recognized the flexibility that it offers to the grid (matching the demand and stabilizing the system) over the levelised cost of energy (LCOE), and announced a bid window in March 2014 solely for CSP, where 200 MW are to be allocated.

CSP’s operational flexibility allows the plant to be run in a conventional mode at maximum power output, store the excess energy and use the full load once the sun starts setting. Another option is to adapt the production to the demand, reducing the load during the central hours of the day where PV can provide cheaper electricity, and shift that energy to generate at later hours without requiring a large storage system.

At CSP Today South Africa 2014 (8 – 9 April, Cape Town), International developers Abengoa and ACWA Power will assess strategies employed to optimize the thermal storage depending on the scale of the plant and the needs of the market. National utility Eskom will identify the role CSP can play in improving energy efficiency by meeting current demand during peak times and stabilizing the grid.
For more information about CSP Today South Africa 2014 visit the website: http://goo.gl/GVd0Uk

About CSP Today
CSP Today is the reference point for CSP professionals and a cornerstone for communications within the industry. We provide business intelligence to the industry with focused news, events, reports, updates and information for the Concentrated Solar Thermal Power industry in markets such as India, South Africa, Spain, USA, Chile and the MENA region.


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