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Talk:Mohammed bin Rashid Al Maktoum Solar Park

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Update needed as of Jan 2023

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New information has been made available: https://www.zawya.com/en/projects/utilities/dubai-solar-parks-fourth-phase-is-92-complete-tzn3p3j9

first 200MW of Phase 4 parabolic basins are connected to the grid

two units of phase 5 solar are also connected already, unit 3 schedulded for this year

solar tower has a height of 262,44m, they claim its the worlds tallest at this height (height also stated at the CTBUH database)

in latest Sentinel images it can be seen that unit 2 of phase 5 is completed (as stated in the article), however unit 3 of phase 5 only has ground works completed, no further construction as of January 2023.

Phase 6 has also been announced, completetion is expected from 2025 onwards:

https://www.thenationalnews.com/business/energy/2022/10/08/dewa-invites-international-expressions-of-interest-for-phase-6-of-dubai-solar-park-project/ — Preceding unsigned comment added by 2A02:810D:4AC0:3C48:5D02:E770:C50:7F31 (talk) 11:00, 11 January 2023 (UTC)[reply]

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Power - peak, AC, DC and all that - and annual production

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There is a potential for confusion of definitions of power for a PhotoVoltaic (PV) Solar Plant.

  • The installed solar cells will have a peak power, i.e. the power that will be delivered when there are no clouds and dust, when sun is at noon, and if there are no tracking devices of the panels, at the time of the year when fixed orientation and inclination of the panels are optimal. This power is delivered as a DC current. It should be noted that the output from PV-panels is reduced with increasing temperature - it could hence happen that the anticipated peak power at "noon" is slightly over-estimated since the temperature could be high at the same time.
  • The DC power is converted in a DC/AC-converter to AC power, which then may be transformed in an ordinary transformer from a low AC-voltage to a high AC-voltage suitable for transmission over longer distances. Typically the losses of modern converter equipment is not big. According to Solar inverter the efficiency is normally above 90% and could be as high as 98%. The same applies for transformers. Hence the difference between the DC and the AC power should normally be negligible
  • However, at least for small installations, if the cost for the inverter is high it could be optimal to chose a slightly under-dimensioned inverter, which may curtail some production at just some few hours. In this case the potential peak DC-power could be larger than the peak AC-power output capability of the inverter
  • The biggest confusion, however, comes from the fairly low capacity factor of a PV-plant. Clearly, the capacity factor can never be higher than 50% since it is night half of the time ..., and in reality the capacity factor (or the average power) is typically around 10% in Sweden, could be 20% in south of Europe, and could come close to 30% at some extreme locations like the Atacama desert and in Mongolia, where the combination of virtually no rain at any time, no clouds and a location well above sea level creates especially good conditions.

In this article (and in the underlying references, too) there were some different figures for "AC-power" and "peak power" about "phase II" of the Mohammed bin Rashid Al Maktoum Solar Park. To my understanding this must be some confusion, maybe there were different alternatives available during the planning process. In the information from the inaugeration it is clearly stated that the peak power is 200 MW. I have not been able to find a good source of the annual production, but I have made own estimates based on the figures given for "avoided CO2 emissions", and I have come to the conclusion that probably the phase II will have the same capacity factor as phase I. For phase I it is clearly stated that the peak power is 13 MW, and the annual production is 28 GWh. Hence the capacity factor is (28E9)/(13E6*8760) = 24.6%, which corresponds well with available solar maps etc for this very sunny location. And assuming the same capacity factor, the annual generation of Phase II will be 200E6*8760*24.6% = 431e9 = 431 GWh/yr. Since the Phase II was inaugurated in april 2017 it has hardly been operating for more than one year, so still real production data may be lacking, but in absence of real data I hope my figure of 431 (+28 for phase I) GWh/yr should be a decent estimate of the production potential. Anhn (talk) 09:02, 15 May 2018 (UTC)[reply]


FAQ (User). If it costs 13.8 Billion to make the Solar Cells. How much Money does it Generate? When will it pay back. — Preceding unsigned comment added by 216.86.90.74 (talk) 22:14, 2 January 2020 (UTC)[reply]

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