hubert lemmens | netbalans bij een wisselende energieproductie
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“Netbalans bij een wisselende energieproductie” (ELIA, Hubert Lemmens)TRANSCRIPT
Netbalans bij een wisselende energieproductie
Hubert LemmensSeptember 4, 2014
Energieopslag en Smart Grids
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Elia Group main challenges
• Crossed by larger and larger flows
• Lack of usable flexibility in existing generation assets
• Deliver electricity from the North to the South
• Generation exceeds consumption, and is more and more volatile
1. Resilience & Flexible Generation
Total capacity of renewables(End 2000)
Wind energy
PV
Biomass
The circle diameter is proportionalto the electrical capacity
~ 30,000 installations
Sources: 50HertzT, TenneT, Amprion, TransnetBW, internal data
~ 221,000 installations
Total capacity of renewables(End 2005)
~ 750,000 installations
Total capacity of renewables(End 2010)
~ 1.300.000 installations
Total capacity of renewables(End 2012)
Daniel Dobbeni | 28-30.10.2013 | Page 3
Beheer van de volatiliteit
Max-min generation : 23 GW
Forecast – actual: 5 GW
Forecast – actual : 2 GW
Delta peak in 1 week: 9 GW
In België (2013):
Wind ~1700 MW PV ~3000 MW
25 % of capacity; 8% of energy
Where we come from : smart electrical system in 20th century
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Where we are going to : smart in 21st century
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Smart in 21st century
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The system needs flexibility
How to determine the optimal mix
More Transmission infrastructure
Demand response
Flexible Generation
Centralized storage
Decentralized storage
CostsPublic acceptance
Roles and responsibilities
Resource Adequacy
Energy Balancing
Ancillaryservice
Responsibility: government/market Tools:• Measurement/ forecasts• Capacity remuneration schemes• Strategic Reserves
Responsibility: energy market actors/ TSO (residual)Tools:• Energy markets (Forward, Day ahead, Intraday)• Direct control (dispatchable load)• Response to price signals (non-dispatchable load)
Responsibility: TSO as buyer - generation&load as providerTools:• Direct control (dispatchable load) options (pre-contracted)• DSOs involved, especially when Distribution grid congestion
issues
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Storage in Power market
Forward Day ahead Intraday Balancing Reserves
P2G
Hydro (not pumped)
Heat
PSP - CAES
Batteries – V2G
Flywheels –s-caps - SMES
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Storage in Europe
Storage offers resources for:• Balancing (Balance resp. party)• Ancillary services (TSO use)
In competition with other resources:• Flexible generation• DSM
Prefered path:• Technology neutral markets for Ancillary services• Multi purpose storage has best perspectives
Last resort: if market doesn’t deliver, regulated investment not excluded.
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Power to Gas
Long term energy storage – however low energetic yield
High investments
Business case depends on price volatility – on average decreasing over the last years
In Belgium: High quantity of cheap H2 available
Flexible electrolysers can offer ancillary services.
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UP to 100 % RES?
Smart Grid solutions can facilitate RES penetration in• Households (12 %)• Small industries • Tertiary sector
Large industry consumes baseload:• Important cost component• Reliability and dependability is key• +/- 33 % of Belgian power consumption
55 %
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Vielen Dank für Ihre Aufmerksamkeit.
Thank you for your attention