Ivanpah and Solana solar thermal power plants monthly electricity comparison

Polaris solar PV net news: yesterday, the CSPPLAZA issued on the world’s largest slot Solana and Tower solar thermal power station and the Ivanpah plant quarterly and annual generating capacity through the power station’s output on the rise, given large commercial power plant from grid-connected electricity generation to achieve design output transition time required a preliminary judgment. Can see from the article on, Solana plant “climbing” Ivanpah plant is shorter, trough explains why technology is relatively mature, equipment operation and actual operation and maintenance of the required break-in period is shorter.

January 2011 to start building the Solana plant Ivanpah plant built and opened in October 2010 ‘s total investment is 2 billion dollars and 2.2 billion dollars, investment approach, construction time and the running time is close to Solana power station installed capacity 280MW, relatively less 392MW Ivanpah about 1/3, but its 6 hour of thermal energy storage systems and to some extent, increased its annual power hour. Ivanpah and Solana designed generating capacity of 1079232MWh and 944000MWh respectively, Solana power station design used to 3,371 the number of hours hours of age, about 9.2 hours a day, this data should be normal, and the Ivanpah plant 2,753 hour, in fact, no thermal power station on water quality, such as annual utilization hours can be achieved more than 2,500 hours, is not easy.

But attention is required, the Ivanpah plant design capacity, such data may not be NREL’s PPA data agreement, sources say, Ivanpah plant actually promised electricity offtakers in PPA agreement (Pacific gas and electric and Southern California Edison power company) net capacity is 975000MWh. United States Department of energy gives the data display is 1065000MWh,BrightSource has explained that this data is not a net generation, PPA protocol data is the net power supply. From this point of view, we accepted 975000MWh’s annual output would be more accurate, and calculated, the annual utilization hours of 2,487 hours, daily average utilization hours reached 6.9 hours.


Ivanpah and Solana solar-thermal power plants monthly electricity comparison

Table: Solana and the Ivanpah months of two major power stations, wind power generation statistics


Ivanpah and Solana solar-thermal power plants monthly electricity comparison

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In order to more clearly show the generating capacity of the two power stations, statistically the CSPPLAZA the month electricity, pictured, from January 2014 to November 2015, 23 months, Solana 91475MWh,Ivanpah of power station generating maximum months of August 2015 the monthly maximum capacity of power station in June 2015, 77534MWh. Calculate, Solana over 327 hours power in this month’s power hour day for about 11 hours, Ivanpah plant in this month’s power hours up to 198 hours, average about 6.6 hours. Breakdown of two months in power plant generating capacity more than 60000MWh of the month, Solana plant amounts to 10 months, Ivanpah plant amounts to 7 months.

But it is in need of attention, according to EIA data, September 2015 to November 2015, these three months, Ivanpah’s contribution includes gas-fired generation in the power station’s output power, its electricity gas contribution three months were 2708MWh,1074MWh and 2305MWh respectively. Solana power stations without gas supply.

In addition, the price level, Solana/kWh,PPA power station contract price for 14 cents for 30 years. Ivanpah plant contract tariffs average about 18 cents a kilowatt-hour (seat of the Ivanpah plant TOU price in California electricity prices to floating electricity prices), the PPA a 25-year period. Combination of two major power stations with a total investment and annual energy production, a rough estimate the financial cost of its operations, or of two major power stations can be roughly estimated payback period. Of course, the 2 prices above preconditions is United States 30% of ITC investment tax credits and United States Department of energy loan guarantees support, Solana plant also received a $ 1.45 billion DOE loan guarantee support.

Overall, from the power of two large power stations in the 23-month performance, combining of various circumstances, we can consider the performance of two major power stations are worthy of recognition. Opinion debatable Ivanpah plant as a large representative samples of DSG-Tower power station, its actual operation period later than the Solana plant for about 4 months, its performance should be relatively normal. If it actually said in the power generation capacity, as the project design value within 4 years, we can be sure that the power station is a great success.

Tower DSG without energy storage power station after the Ivanpah project achieved commercial operation, currently in Israel are 121MW Ashalim1 in the construction of power stations is shaping the second commercial cases. But must face up to the fact that energy storage is the competitiveness of solar-thermal power, in view of this, we should pay more attention to energy storage-type solar thermal power plant performance and economy, especially in the Chinese market, it has become consensus. Even water quality, energy storage is also indispensable. We now study the Ivanpah plant should pay more attention to should be on its large field of design and control practice.

Tower of molten salt technology is highly respected, is currently the largest market in the technical route selection of dispute is to select regular trough or tower of molten salt. But unfortunately it is not through actual operation data to compare this, but recently official incorporation of Crescent dune plant will give a preliminary result within the next year, then we should be able to see the massive Tower of molten salt solar-thermal power station operation.

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Original title: Ivanpah and Solana solar-thermal power plants monthly electricity comparison

Posted in Solar Charger.