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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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