Diversity helps, but there will always be gaps. The $2 billion pumped storage project with 6 hours storage will make a very small dent in the chart on this slide.
Decarbonizing the grid is part of the “Power to Fuels” track on the chart.
Issues raised: Blackstart capability, difficulty of expanding transmission both physically and in connecting markets. Interesting overlap between interest in power system resiliency and providing flexibility.
Info on the project: started last year, in first round we made a ‘beta’ version which we posted online and the the AG and received feedback. In parallel we also made a survey in the AG members
Can the dream of 100% renewable energy be a reality? - Mr. Ken Dragoon
Can the dream of 100% renewable
energy be a reality?
Power System Flexibility Strategic Roadmap
Flexibility Strategic Roadmap
Report on transforming power
systems of today to power
systems deriving most or all of
their energy from variable
renewable energy sources (VRES).
• Draft being revised per Advisory Panel
• Funding from European Copper
Available from: http://www.leonardo-
Power System Flexibility Strategic
Preparing power systems to supply reliable power
from variable energy resources
Three Main Challenges
• Depending primarily on renewable resources requires the ability to:
1. Adjust demand and supply rapidly enough to maintain stable and
2. Fill in during times of low renewable output
3. Absorb energy in a useful way in the more frequent and intensive times
• Flexibility is the ability of a power system to maintain reliable service
under potentially rapidly changing supply and demand conditions.
Wind in BPA’s system
Why a 100% VRES power system scenario?
• VRES become competitive, and are
gaining a central role in future
• Relying on energy from VRES will
require transforming the way power
systems are planned and operated.
• The “end game” scenario serves as a
basis for understanding the
• Flexibility is key to enabling this
transition-- First step is making more
efficient use of what we already
Seven Keys to Power System Flexibility
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
4. Institute price incentives or mechanisms
that reflect the value of both flexibility
and the 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
Primary Energy Storage Electric Energy Storage
Broader View of Grid Energy Storage
Three Part Transformation
Near Term Long TermNear Term
- Enhance markets
- Review grid codes
- DSM demos
- Establish RE development
- Plan phase out of inflexible
- Market reform: shorter trading periods,
ancillary services markets, market
consolidation, DSM and DER participation,
reflect incidents of low wholesale prices at
- Greater coordination and optimization at
- Renewables provide ancillary services
- Transmission and distribution system coordination,
dynamic transmission path ratings, strategic
transmission expansion to REZs
- Strategic energy storage investments and
improved valuation techniques
- Begin phase out of inflexible units
- 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
• Depending primarily on variable resources
is technically feasible, and actions need to
be taken to minimize costs.
• Transformation in three parts:
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
3. Long Term, highest penetration levels, characterized by a system
where markets are dominated by storage and flexibility services
and where bulk energy storage and efficient use of surplus energy
become primary focuses.
• Finalizing paper, addressing issues raised by
• Publicize the report to planners and policy
makers interested in increasing role of variable
renewable resources in their power systems.
• Research market for flexibility tracker to rate
power system’s progress toward achieving the
Audi Methane Production Plant
Key flexibility challenges
start hosting DER
the 50% range
Market incentives and
Demand side flexibility
Market and system
Efficient Use of High-
Stable Operation with