Additional clarifications on economic and adequacy running hours

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Presentation transcript:

Additional clarifications on economic and adequacy running hours

Starting point for the analysis: Base Case 2030 2030 numbers Overview of key assumptions (real 2016 vs Base Case 2030) 2016 2030 (BC) PV 3 GW 5 GW Onshore wind 1.5 GW 3.3 GW Offshore wind 0.7 GW 2.3 GW DSR 0.6 GW 1.1 GW Exis. OCGT/CCGT 3.8 GW IC capacity 3.5 GW 6.5 GW CHP/Biom./Waste Storage 1.3 GW Nuclear 5.9 GW 0 GW

In order to guarantee adequacy, there is a need of around 14 GW in Belgium (all generation sources, flexibility options, imports,… combined) To guarantee SoS (100% available) [GW] ≈ 14,2 GW* TYPE Main limitations (installed capacity ≠ contribution to adequacy) Wind/PV Intermittency (linked to meteorology) Generating electricity Thermal/ combustion Outages Can be filled by: DSM Activations limitations (amount, frequency) Shift/reduction of consumption Storage Reservoir limitations. Availability of energy during other moments Imports Importing from EU Availability of energy abroad and grid constraints *See figure 26 of the report for more details on the peak distribution

Not economically dispatchable (with few exceptions) x hours “Adequacy running hours” per 100 % available capacity per block of 1 GW Assuming thermal outage on blocks DSM Load - Wind/PV - CHP/bio - - Imports ≈ 45 TWh/year Storage Assuming imports all the year long with 6500 MW if available abroad and needed in Belgium (at any price) [GW] ≈ 14,2 GW ≈ 13,6 GW 10 1 GW 20 10 1 GW 200 30 ≈ 11,2 GW 1 GW 900 120 ≈ 10,6 GW 10 Needed to cope with energy availability in neighbouring countries 1 GW 2500 500 10 1 GW 4800 1100 70 30 5,9 GW + (1 to 2 GW) 1 GW 6700 2100 300 200 1 GW 8100 3800 800 700 5 1 GW 8700 5500 1700 1700 5,9 GW LEGEND 1 GW 8760 7000 3100 3100 < 20h 1 GW 8760 7900 4900 4900 10 20h – 100h 1 GW 8760 8500 6500 6600 60 100h – 3000h 1 GW 8760 8700 7600 7800 300 700 3000h – 7000h 1 GW 8760 8760 8300 8500 1 GW 8760 8760 >7000h 8700 8700 1200 1 2 3 4 5

Explanation of the previous slide step by step Starting from the load duration curve, one can assess the amount of hours during which a certain block of capacity (100% available) is needed during the year. The total amounts to around 14 GW for Belgium of which 8 GW are needed for more than 8000 hours a year. 1 Removing non dispatchable renewable generation (wind, PV and hydro Run-of-River) lead to a reduction in the total need and in running hours per block of capacity. Impact on the top blocks is smaller than on the lower ones given the correlation between PV, wind production and consumption. During peak hours (winter), PV production is 0 or very low. 2 Removing non dispatchable thermal generation (biomass and CHP) leads to a further reduction of the total need and in the hours per block of capacity. Given that CHP and biomass electrical output are not (or in a very limited way) dependent on meteorological variables, their contribution at peak is very high and can be compared to other thermal technologies. 3 DSM and storage can also be removed from the load duration curve. Those are normally dispatched economically. DSM is not usually dispatched given its high activation price. Storage usage will depend on the other generation source’s prices. Both have an effect to lower the need. Storage will increase the hours in the lower blocks and decrease it in the top blocks as it will move energy from low consumption hours to higher ones. 4 Imports and exports of energy also depend on economic dispatch and hence on technologies in Belgium and abroad. In this case, in order to calculate the running hours for adequacy, if the energy is available abroad (whatever its price), Belgium can import the maximum capacity all the time. This leads to a steep decrease in running hours and needed capacity. It is important to note that those imports are not economical, it is just a way to see which are the moments when Belgium could not rely on imports (after using all available capacity). Given the uncertainty on available energy abroad, mainly during high consumption moments in Belgium, the need could be increased by 1 to 2 GW as shown in the study. 5 The last column (after all assumed available technologies) is what is called “adequacy running hours” and follows the same methodology as in the “Adequacy and Flexibility study 2017-27” of 2016. An important distinction should be made between “adequacy” and “economic” running hours. While the adequacy picture provides the needed capacity and hours during which Belgium has no other solution than investing in local generation/DSM/storage, the economic picture cannot be deducted from such analysis. Assuming that RES and CHP are usually less driven by economics (must runs), one can derive the economic picture from the 3rd column (see next slides) 6

Economic running hours (on EU market) Starting from the adequacy view on “non dispatchable” generation, the economically dispatched options can be evaluated ADEQUACY VIEW ECONOMIC DISPATCH - Wind/PV Load Starting from the “residual demand” (Load minus non dispatchable generation) Economic running hours of technologies depend on the installed generation technologies abroad and in Belgium, consumption and economic parameters. A range is given here based on the simulations results from different scenarios. - CHP/bio 100% available blocks [GW] 11,2 GW Can be filled with: 10 1 GW 70 Economic running hours (on EU market) 1 GW 280 1 GW 780 DSM 10 - 20 1 GW 1700 New OCGT 100 - 1000 1 GW 3100 1 GW 3100 Exis >25y 1000 - 2000 1 GW 4900 Exis <25y 1500 - 4000 Choice Impacts → Imported/Exported energy 1 GW 6500 New CCGT 5000 - 7000 1 GW 7600 Storage 1000 - 3000* 1 GW 8300 New CHP/Bio/… 6000 - 7500 1 GW 8700 x hours x hours * Note for storage, it only represents the injection hours

Didactic example of 2 cases to fill the need for Belgium ADEQUACY VIEW ECONOMIC DISPATCH (simplified view) 5 Choices of new built in Belgium impact electricity prices hence welfare and imports of electricity (see next slide) Note that storage was not represented as it is a shifting of energy but it also plays a role in the economic dispatch by decreasing running hours in the top blocks and increasing in the lower blocks. It also has a contribution to reduce the total need as shown in the previous slide. - Wind/PV Load - CHP/bio CASE 1: new efficient units CASE 2: less efficient units 100% available blocks [GW] 11,2 GW 10 10 - 20 10 - 20 DSM Filling first the need with existing units/technologies 1 GW 70 1 10 - 1000 100 - 1000 1 GW 280 New OCGT 1 GW 780 The rest has to be filled with new built units in BE (at least 3,6 GW) and imports 1 GW 1700 2 1000 - 4000 1000 - 4000 1 GW 3100 Existing units 1 GW 3100 In the first case the choice is made to built efficient units, in the second, less efficient units 1 GW 4900 3 5000 - 7000 6000 - 8000 1 GW 6500 New CCGT 1 GW 7600 The rest being “filled” by imports 4 1 GW 8300 Imports 8760 1 GW 8700 x hours x hours x hours

Impact on prices We recall that the study has identified that: Filling in the need of 3,6 GW new capacity with less efficient technologies has a negative impact on total welfare (cf average price difference with neighbouring countries of -5,7 EUR/MWh if filled by OCGT versus CCGT); Without support mechanism, only 1,6GW of the needed 3,6GW will emerge on the markets. The lack of 2GW will lead to average LOLE of 17hours and to an average price difference with neighbouring countries of about 15,4EUR/MWh.

Conclusion Adequacy Missing money Economic optimum