Oliver Ruhnau
@oliverruhnau.bsky.social
Assistant Professor for Energy Market Design @UniCologne | Reserach Scientist @EWI Energy Economics Institute | Previously Centre for Sustainability @HertieSchool
Enjoy the read and we are looking forward to your questions and feedback 💡
April 8, 2024 at 9:49 AM
Enjoy the read and we are looking forward to your questions and feedback 💡
3) H2 modelers should make the omission or overestimation of portfolio effects transparent when investigating individual locations or entire regions.
April 8, 2024 at 9:48 AM
3) H2 modelers should make the omission or overestimation of portfolio effects transparent when investigating individual locations or entire regions.
2) H2 policymakers should consider potential discrimination against small H2 producers (without access to diverse portfolios) when regulating temporal matching.
April 8, 2024 at 9:48 AM
2) H2 policymakers should consider potential discrimination against small H2 producers (without access to diverse portfolios) when regulating temporal matching.
We draw the following conclusions:
1) H2 producers should diversify their renewable generation portfolio under strict temporal matching requirements.
1) H2 producers should diversify their renewable generation portfolio under strict temporal matching requirements.
April 8, 2024 at 9:47 AM
We draw the following conclusions:
1) H2 producers should diversify their renewable generation portfolio under strict temporal matching requirements.
1) H2 producers should diversify their renewable generation portfolio under strict temporal matching requirements.
Regional diversification yields 3-7% for 2 locations and increase with the number of locations (see figure).
For a Germany-wide aggregation, portfolio effects increase to 14-21% (see full paper).
For a Germany-wide aggregation, portfolio effects increase to 14-21% (see full paper).
April 8, 2024 at 9:46 AM
Regional diversification yields 3-7% for 2 locations and increase with the number of locations (see figure).
For a Germany-wide aggregation, portfolio effects increase to 14-21% (see full paper).
For a Germany-wide aggregation, portfolio effects increase to 14-21% (see full paper).
Technological diversification, i.e., a combination of wind and solar, at one location brings the greatest portfolio effects (36% in the exemplary graph).
April 8, 2024 at 9:45 AM
Technological diversification, i.e., a combination of wind and solar, at one location brings the greatest portfolio effects (36% in the exemplary graph).
In our new working paper, we show that if (and only if) temporal matching is required, market participants with more diverse portfolios can produce green hydrogen more cheaply than those with less diverse portfolios.
April 8, 2024 at 9:45 AM
In our new working paper, we show that if (and only if) temporal matching is required, market participants with more diverse portfolios can produce green hydrogen more cheaply than those with less diverse portfolios.
Temporal matching between H2 production and contracted renewable electricity has been discussed and implemented, e.g., in the context of the EU RED and the US IRA.
Previous studies investigating H2 matching use different assumptions on regional aggregation.
What does that imply?
Previous studies investigating H2 matching use different assumptions on regional aggregation.
What does that imply?
April 8, 2024 at 9:44 AM
Temporal matching between H2 production and contracted renewable electricity has been discussed and implemented, e.g., in the context of the EU RED and the US IRA.
Previous studies investigating H2 matching use different assumptions on regional aggregation.
What does that imply?
Previous studies investigating H2 matching use different assumptions on regional aggregation.
What does that imply?
You were right, @plehmann.bsky.social, the plot in my earlier post was wrong. Here is the right one. Thank you for making me aware :)
February 23, 2024 at 6:13 AM
You were right, @plehmann.bsky.social, the plot in my earlier post was wrong. Here is the right one. Thank you for making me aware :)
13 GW is much less than some very old studies I know:
- Nicolosi 2012 observed DE power prices dropping below zero at 20-30 GW
- FGH et al. 2012 found that 25 GW are needed for system security
Has someone seen more recent analyses on this topic?
- Nicolosi 2012 observed DE power prices dropping below zero at 20-30 GW
- FGH et al. 2012 found that 25 GW are needed for system security
Has someone seen more recent analyses on this topic?
January 4, 2024 at 10:18 AM
13 GW is much less than some very old studies I know:
- Nicolosi 2012 observed DE power prices dropping below zero at 20-30 GW
- FGH et al. 2012 found that 25 GW are needed for system security
Has someone seen more recent analyses on this topic?
- Nicolosi 2012 observed DE power prices dropping below zero at 20-30 GW
- FGH et al. 2012 found that 25 GW are needed for system security
Has someone seen more recent analyses on this topic?
High start-up costs may prevent plants from ramping down, but unlikely for 38h in a row, I think.
Other reasons for must-run:
1) Grid services: balancing & redispatch
2) Combined heat and power (CHP)
3) Ill-designed support schemes (for biomass and CHP)
Other reasons for must-run:
1) Grid services: balancing & redispatch
2) Combined heat and power (CHP)
3) Ill-designed support schemes (for biomass and CHP)
January 4, 2024 at 10:18 AM
High start-up costs may prevent plants from ramping down, but unlikely for 38h in a row, I think.
Other reasons for must-run:
1) Grid services: balancing & redispatch
2) Combined heat and power (CHP)
3) Ill-designed support schemes (for biomass and CHP)
Other reasons for must-run:
1) Grid services: balancing & redispatch
2) Combined heat and power (CHP)
3) Ill-designed support schemes (for biomass and CHP)
Deadline: 1-Feb-2024
IEW International Energy Workshop, Bonn
26-Jun-2024
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IEW International Energy Workshop, Bonn
26-Jun-2024
www.internationalenergyworkshop.org
IEW | International Energy Workshop
The International Energy Workshop (IEW) is one of the leading conferences for the international energy modeling research community. It provides a venue for analysts to compare quantitative energy pro...
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January 3, 2024 at 8:53 AM
Deadline: 1-Feb-2024
IEW International Energy Workshop, Bonn
26-Jun-2024
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IEW International Energy Workshop, Bonn
26-Jun-2024
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Deadline: 31-Jan-2024
EAERE Annual Conference, Leuven
01-Jul-2024
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EAERE Annual Conference, Leuven
01-Jul-2024
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Welcome to EAERE 2024!
29th Annual Conference of the European Association of Environmental and Resource Economists - Leuven, Belgium, 1-4 July 2024
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January 3, 2024 at 8:52 AM
Deadline: 31-Jan-2024
EAERE Annual Conference, Leuven
01-Jul-2024
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EAERE Annual Conference, Leuven
01-Jul-2024
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Deadline: 31-Jan-2024
12th Mannheim Conference on Energy and the Environment, Mannheim
13-May-2024
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12th Mannheim Conference on Energy and the Environment, Mannheim
13-May-2024
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January 3, 2024 at 8:52 AM
Deadline: 31-Jan-2024
12th Mannheim Conference on Energy and the Environment, Mannheim
13-May-2024
www.zew.de/en/events-an...
12th Mannheim Conference on Energy and the Environment, Mannheim
13-May-2024
www.zew.de/en/events-an...