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Renewable energies: what to do with the intermittency?

Renewable energies: what to do with the intermittency?

The capacity factor of the renewable energies that are emerging in the market are well below the traditional of hydroelectricity of 60%. Solar, for each kW installed, produces an average of 20%. Wind power 40%.

The technical solution is having back up power plants that can be dispatched whenever necessary.

In reality, it is equivalent to the need for additional investments, which are associated with its amortization and therefore add up important costs.

The proposal that I present for consideration in the deregulated power markets is: clients to constitute a portfolio of sources to "close their necessary volume". And not like the current system, in which a prorated amount is collectively paid for. It means for example that contracting all the required volume form a wind farm - there is no need to "worry" about the intermittence.

Rafael Herzberg's picture

Thank Rafael for the Post!

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Munir Mujawar's picture
Munir Mujawar on Sep 14, 2020 5:48 pm GMT


 Mr Rafael Hertzberg's proposal, I view as a group of virtual power plants of wind &  solar. For grid load dispatchers, they will be considered separate portfolios participating in load sharing. These will be based on identities based on geographical/ commercial based on ownership or something else.

Robin Duquette's picture
Robin Duquette on Sep 14, 2020 5:55 pm GMT

Thanks for your suggestion. I think that merchant renewable intermittent energy is already paying the intermittency cost when developers are hedging forward to increase leverage (or get tax equity holders). That is, they will get a discount relative to the baseload price for wind or the peak price for solar. Developers can potentially use this discount instead to invest in flexible means to mitigate intermittency as you suggest.

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