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Senegal’s domestic gas reserves will be primarily used to supply electrical energy. Authorities count on that domestic gas infrastructure initiatives will come online between 2025 and 2026, supplied there is not any delay. The monetization of those significant vitality resources is at the foundation of the government’s new gas-to-power ambitions.
In this context, the global expertise group Wärtsilä performed in-depth research that analyse the financial impression of the varied gas-to-power strategies obtainable to Senegal. Two very different applied sciences are competing to meet the country’s gas-to-power ambitions: Combined-cycle gas generators (CCGT) and Gas engines (ICE).
These studies have revealed very significant system price differences between the two main gas-to-power technologies the country is at present considering. Contrary to prevailing beliefs, gas engines are in fact significantly better suited than mixed cycle gas generators to harness energy from Senegal’s new gas assets cost-effectively, the examine reveals. Total price differences between the 2 technologies might attain as much as 480 million USD until 2035 relying on situations.
Two competing and very totally different technologies
The state-of-the-art energy mix fashions developed by Wärtsilä, which builds customised energy eventualities to establish the fee optimal method to ship new generation capacity for a selected nation, shows that ICE and CCGT applied sciences present vital value variations for the gas-to-power newbuild program running to 2035.
Although these two technologies are equally proven and reliable, they’re very completely different in terms of the profiles in which they’ll function. CCGT is เกจวัดแรงดันออกซิเจนราคา -how that has been developed for the interconnected European electrical energy markets, the place it could operate at 90% load factor at all times. On the opposite hand, versatile ICE technology can function effectively in all working profiles, and seamlessly adapt itself to some other technology technologies that may make up the country’s energy combine.
In particular our examine reveals that when operating in an electrical energy community of restricted dimension such as Senegal’s 1GW nationwide grid, relying on CCGTs to significantly increase the network capacity can be extraordinarily pricey in all possible situations.
Cost variations between the technologies are explained by a selection of components. First of all, scorching climates negatively impression the output of fuel turbines greater than it does that of fuel engines.
Secondly, due to Senegal’s anticipated entry to low-cost domestic gas, the working costs turn into much less impactful than the investment prices. In different words, as a result of low gasoline costs lower operating prices, it is financially sound for the country to rely on ICE energy vegetation, which are less expensive to construct.
Technology modularity also performs a key role. Senegal is anticipated to require an additional 60-80 MW of generation capacity each year to have the ability to meet the growing demand. This is way decrease than the capacity of typical CCGTs plants which averages 300-400 MW that must be built in one go, resulting in unnecessary expenditure. Engine energy vegetation, however, are modular, which suggests they can be built exactly as and when the nation needs them, and further extended when required.
The numbers at play are significant. The mannequin shows that If Senegal chooses to favour CCGT crops on the expense of ICE-gas, it’ll result in as much as 240 million dollars of additional value for the system by 2035. The price difference between the technologies may even improve to 350 million USD in favor of ICE know-how if Senegal also chooses to construct new renewable power capability within the next decade.
Risk-managing potential fuel infrastructure delays
The development of gasoline infrastructure is a fancy and lengthy endeavour. Program delays aren’t uncommon, causing fuel supply disruptions that can have a huge financial impression on the operation of CCGT vegetation.
Nigeria is aware of something about that. Only final year, significant gasoline supply points have caused shutdowns at some of the country’s largest gasoline turbine power vegetation. Because Gas generators function on a continuous combustion course of, they require a relentless supply of gasoline and a steady dispatched load to generate consistent power output. If the availability is disrupted, shutdowns occur, putting a great strain on the general system. ICE-Gas vegetation then again, are designed to regulate their operational profile over time and improve system flexibility. Because of their flexible working profile, they were in a position to maintain a a lot greater degree of availability
The study took a deep dive to analyse the financial impact of 2 years delay in the gas infrastructure program. It demonstrates that if the nation decides to invest into gas engines, the price of fuel delay could be 550 million dollars, whereas a system dominated by CCGTs would lead to a staggering 770 million dollars in further cost.
Whichever means you take a glance at it, new ICE-Gas generation capacity will reduce the total value of electrical energy in Senegal in all potential scenarios. If Senegal is to meet electrical energy demand progress in a cost-optimal way, at least 300 MW of recent ICE-Gas capacity might be required by 2026.
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