Smart Energy Technologies

Technical Symposium

Cheap, Firm PV Without Conventional Backup: Supply Shaping Through Curtailment

Tuesday, September 25
2:15 PM - 2:35 PM
Location: 203AB

Abstract Content : Aim/Objective: To determine the optimal mix of solar, wind, storage, load shifting, and curtailment when trying to achieve a 100% renewable future.

Methods: A techno-economic analysis that examines how key technologies and management approaches (demand side management, energy storage, geographic dispersion, synergy with wind and ‘smart’ curtailment) can overcome grid integration challenges encountered with increasing solar penetration. The goal of the analysis is to determine the portfolio of technologies and management strategies that achieves the lowest levelized cost of electricity (LCOE) for specific production profiles at increasing levels of solar penetration.

Results: We will present the optimized solar, wind, and storage capacities for a 100% renewables future, as well as the LCOE of the aggregate system. We will further present cost-tradeoffs between storage and PV curtailment and between storage and load-shifting. Attendees will gain insight into the operational characteristics of each of these technologies/management approaches (e.g., required cycling of storage assets and discharge rates, % of curtailment, availability of load-shifting).
Notably, we demonstrate that a 100% renewable future is economically and under best-case technology development is cost-competitive with current generation costs. Additionally, we demonstrate that over-building solar and wind capacity and curtailing excess generation is significantly cheaper than building enough storage to ensure that no solar or wind generation is curtailed.

Conclusion: The time to plan for a 100% renewable future is now. Importantly, planning will require developing new methods to compensate solar and wind assets in a future where significant amounts of curtailment (up to 50%) are required to cost-effectively achieve a 100% renewable future.


 

Marc Perez

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Cheap, Firm PV Without Conventional Backup: Supply Shaping Through Curtailment



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