Power System Strategic Flexibility Roadmap

Dr. Georgios Papaefthymiou

29/10/2015

Power System Flexibility Strategic RoadmapPreparing power systems to supply reliable

power from variable energy resources

Webinar Leonardo Energy

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Can the dream of 100% renewable energy be a

reality?

Not just a dream!

03/11/20152 G. Papaefthymiou

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Flexibility Roadmap

1. Report on how to transform power

systems of today to power systems

deriving most or all of their energy

from variable renewable energy

sources (VRES)

2. Work was funded by ECI

3. Advisory Panel of 40 experts

contributed with comments and

discussion

Links:

03/11/2015 G. Papaefthymiou3

Power System Flexibility Strategic Roadmap

Preparing power systems to supply reliable power

from variable energy resources

!!

http://www.ecofys.com/en/publications/power-system-flexibility-strategic-roadmap/

http://www.leonardo-energy.org/white-paper/power-system-flexibility-strategic-roadmap

http://www.ecofys.com/en/publications/power-system-flexibility-strategic-roadmap/

http://www.leonardo-energy.org/white-paper/power-system-flexibility-strategic-roadmap

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Flexibility Roadmap


WHY?

Introduction and Purpose

VISION

Power System Flexibility

Vision

CHALLENGES

Key Flexibility Challenges

ACTIONS

Policy and Institutional Frameworks

ROADMAP SUMMARY

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Flexibility Roadmap


WHY?


VISION


Vision

CHALLENGES


ACTIONS


ROADMAP SUMMARY

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Why a 100% VRES power system scenario?

> VRES become competitive, and are gaining

a central role in future scenarios

> Relying on energy from VRES will require

transforming the way power systems are

planned and operated.

> Such a ‘wild’ scenario serves as excellent

starting point to understand the challenges

> Flexibility is key in enabling this transition

First step is making more efficient use of it


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Back to the basics: some definitions…

What is power system flexibility?

> Power system flexibility represents the extent to which a power

system can adapt electricity generation and consumption as needed to

maintain system stability in a cost-effective manner.

> Flexibility is the ability of a power system to maintain continuous

service in the face of rapid and large swings in supply or demand.

> Measures of flexibility:

– Ramp rates, minimum up/down times, and start-up/shut-down

times are commonly used indicators of flexibility, measured as MW

available for ramping up and down over time

7 03/11/2015 G. Papaefthymiou

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Five categories of flexibility options:


System

Energy Storage

Supply

Net-work

Demand

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Flexibility Roadmap


WHY?


VISION


Vision

CHALLENGES


ACTIONS


ROADMAP SUMMARY

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Power System Flexibility Vision: 7 key elements

1. Exploit flexibility and energy storage

inherent in demand (prosumers)

2. Enable liquid, expanded and close-to-real-

time power markets

3. Control VRES generators to provide grid

support services

4. Institute price incentives or mechanisms

that reflect diversity-related benefits

in the development variable resources.

5. Deploy bulk energy storage to cover

longer periods (weeks to months) of low

renewable energy supply.

6. Develop smart grids for coordination of

flexible resources across voltage levels

7. Establish new electric energy uses to

capitalize on the surplus energy events


100% VRES Power

System

1. DSM

2. Power Markets

3. VRES control

4. Resource Diversity

5. Energy Storage

6. Smart Grid

7. Surplus Energy

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Flexibility Roadmap


WHY?


VISION


Vision

CHALLENGES


ACTIONS


ROADMAP SUMMARY

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Key flexibility challenges

Near-term Regime

Integrating low VRES levels

Reserve requirements

Distribution networks start hosting DER

Integrate DG

Mid-term Regime

Penetration in the 50% range

Market incentives and harnessing flexibility

Demand side flexibility

Managing distribution networks

Transmission network changes

Market and system operation changes

Energy storage

Long-term Regime Very high

penetrations

Supplying Power During Low Output

Level Events

Efficient Use of High Output level Energy

Stable Operation with Non-synchronous

Generation


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Power to Fuels

Generalized Role of Energy Storage

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Gas fields &

pipelines,

hydro

reservoirs,

coal piles,

diesel tanks,

etc.

Primary Energy Storage

Pumped

hydro,

compressed

air, batteries,

etc.

Electric Energy Storage

Hot and cold

water

storage,

irrigation

reservoirs,

insulated

buildings, etc.

End Use Energy Storage

Power

Plants

GridEnd Use Energy:

Heating, cooling,

pumping, etc.End Use

Devices

Primary Energy:

Uranium, natural

gas, diesel, coal,

wind, sun, etc.

G. Papaefthymiou

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Near Term Long TermNear Term

10%

50%

100%

- Enhance markets

- DSM demos

- RE development Zones (REZs)

- Remove penalties

- Review grid codes

- Market reform: shorter trading periods, ancillary services markets, market consolidation, DSM and DER participation

- Incentives for locating to REZs

- Renewables provide ancillary services

- Transmission and distribution system coordination, strategic transmission expansion to REZs

- Strategic energy storage investments

- Research long-term issues

- Implement large scale use of surplus electric generation

- Grid support transition from conventional generation to VRES, demand resources and storage

- Implement non-fossil fuels to conventional resources or long-term storage options to bridge period of low VRES energy supply

- Implement solutions for stable system operation with reduced share of synchronous generators

Pen

etr

ati

on

level

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Roadmap summary

> A 100% VRES system is technically feasible and actions need to

be taken to minimize costs

> A three-phase transformation of the power system:

1. Near Term, lower penetration levels in which integration costs can be

minimized with relatively modest changes to existing practices.

2. Mid Term, higher penetration levels, characterized by exploiting the

system's available flexibility and storage on both the production and

consumption sides-- making more efficient use of surplus energy.

3. Long Term, highest penetration levels, characterized by a system

where markets are dominated by flexibility services and where

bulk energy storage and efficient use of surplus energy become

primary focuses.


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Questions?

Dr. Georgios Papaefthymiou

Ecofys Germany GmbH

Albrechtstraße 10c

10117 Berlin

Germany

E: [email protected]

I: www.ecofys.com

G. Papaefthymiou

mailto:[email protected]

http://www.ecofys.com/

Power System Strategic Flexibility Roadmap

Technology

Transcript of Power System Strategic Flexibility Roadmap