Overbuilding & curtailment: The cost-effective enablers of firm PV generation

Autor: Richard Perez, Marc Perez, Karl R. Rábago, Morgan C. Putnam
Rok vydání: 2019
Předmět:
Zdroj: Solar Energy. 180:412-422
ISSN: 0038-092X
Popis: Current thinking considers that PV output curtailment is a last resort measure to be avoided. In this article, we argue that supply-shaping, achieved through proactive curtailment associated with PV oversupply, is actually critical to achieving intermittency mitigation and delivering firm PV generation at the lowest cost. We investigate the premium to transform a low-cost, but intermittent solar kWh into a firm, effectively dispatchable kWh. We show that a fundamental ingredient of minimizing this premium is to optimally overbuild and, as necessary and appropriate, curtail PV generation. Drawing on a case study in the State of Minnesota, we show that firm, high-penetration-ready PV generation could be achieved at a production cost at or below current conventional generation, especially when optimally coupled with wind generation. We conclude with a recommendation that in order to achieve this lowest cost firm generation potential, proactive curtailment strategies should inform future transactional PV remuneration systems.
Databáze: OpenAIRE