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Grid Investment and Support Schemes for Renewable Electricity Generation

Johannes Wagner

Year: 2019
Volume: Volume 40
Number: Number 2
DOI: 10.5547/01956574.40.2.jwag
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Abstract:
The unbundling of formerly vertically integrated utilities in liberalized electricity markets led to a coordination problem between investments in the regulated electricity grid and investments into new power generation. At the same time investments into new generation capacities based on weather dependent renewable energy sources such as wind and solar energy are increasingly subsidized with different support schemes. Against this backdrop this article analyzes the locational choice of private wind power investors under different support schemes and the implications on grid investments. I find that investors do not choose system optimal locations in feed-in tariff schemes, feed-in premium schemes and subsidy systems with direct capacity payments. Consequently, inefficiencies arise if transmission investment follows wind power investment. A benevolent transmission operator can implement the first-best solution by anticipatory investment behavior, which is however only applicable under perfect regulation. Alternatively a location dependent network charge for wind power producers can directly influence investment decisions and internalize the grid integration costs of wind power generation.



Effect of Combining Carbon Policies and Price Controls in Cross-Border Trade of Energy on Renewable Generation Investments

Juan Carlos Muñoz, Sebastian Oliva H., and Enzo Sauma

Year: 2024
Volume: Volume 45
Number: Number 1
DOI: 10.5547/01956574.45.1.jmun
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Abstract:
In this paper, we investigate the combined effect of carbon policies and price controls in cross-border trade of electricity on power generation investments. It has been shown that price controls in cross-border trade of electricity may negatively affect renewable energy investments. However, the assessment of the impact of the simultaneous adoption of carbon policies and energy price controls has still not been addressed. Assessing this interaction is important to find out whether carbon policies can offset the negative impact of price controls on renewable energy investments or not. Results show that carbon policies can partially offset the negative impact of price controls, and that cap-and-trade programs are more effective to prevent this negative impact than carbon taxes. On the other hand, high levels of carbon taxes combined with price control regulation may increase renewable capacity investments, but without completely offsetting the negative effect of the price controls.





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