Solar energy continues to blaze a path forward for renewables, and installations are rapidly expanding around the globe – at both the grid and distributed scales. This represents a major shift in the way we generate and consume electricity every day, and the increased penetration of renewables is creating new challenges. Both photovoltaic and solar thermal benefit immensely from the addition of energy storage technologies – allowing renewables to be dispatchable, on-demand resources. Energy storage technology is rapidly advancing as the solution to challenges created by intermittency and distributed generation. This webinar will focus on the role of energy storage on the grid, and how storage is able to augment the solar industry.

1. Energy Storage and Solar:
What Does, and Doesn’t, Lie on the Horizon

2. ESA MEMBERS

5. Redox Flow Batteries
Energy stored is decoupled from power delivery
๏ system energy storage capacity independent from system power
capacity
๏ limited electrical & thermal hazard
๏ high life cycle sustainability
๏ configuration optimized to project
๏ normalized system cost curve matches the storage value curve
๏ system scaling is less complex
๏ commercially-available components
๏ regional supply chain & factory assembly

10. Services Storage Provides

11. Electric Energy Time Shift
(aka – ‘Peak Shifting’)

13. Solution: Energy Storage for Peak Shaving
• Duration: variety of technologies operate wide
range of hours
• Frequency: field experience confirms 24/7/365
operation
• Permanence: dedicated grid assets to provide
services over long haul

14. 40 GW Peak Generation
Needed in Next 15 Years

15. Load Following and Ancillary
Services

17. Solution: Energy Storage as Flexible Resource

19. Renewables and Storage
• Smooths power
output, intermittency
• Storage systems
prevent large local
spikes from
renewables
• Mitigates system
level issues caused by
high renewable
penetration
• Goal is not
necessarily to create
24/7 ‘on-demand’
solar – systems are
scaled based on cost-
benefit analysis
• Storage enables
greater deployment,
larger system size for
renewables

23. Policy Drivers

24. Policy Brings Capitol Investment, Lower Cost
Equity
Profits
Revenues Costs
e.g. Pay For Performance,
additional competitive
markets
 FERC/ISO’s
e.g. Investment Tax Credit,
MLP’s, leveling the playing
field
 Congress
Debt
Risk
Revenue Certainty Technology Risk
e.g. PPAs, RFPs, IRP, TOU Rates
 States, FERC
e.g. Loan guarantees, ARPA-e,
NY-BEST
 States, DOE, Congress

25. Sample System with Incentives
• Hypothetical system
installed in CA could
take advantage of:
• SGIP - $2/watt for ES
• Fed Tax Credit – 30%
• TOU Rates -
$500/kWh over
system lifetime
• System could cost
over $1400 per kWh, or
$7000 for a 5 kWh
system, and still
breakeven
• When markets reward
storage’s flexible,
dynamic attributes, the
entire grid benefits

27. Where to Continue the Conversation?