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ID:
162287
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| Summary/Abstract |
In 2016, solar and wind energy production were greatly curtailed in China, especially in its northwestern region. This paper identifies administrative factors and market barriers as the main causes of renewable curtailment. In 2017, the Northwest Power Grid (NWPG) successfully implemented a variety of approaches to reduce wind and solar curtailment. In this paper, we analyze the change in power generation, expansion of renewable energy delivery, and electricity-replacement projects across provinces that occurred in 2017. While acknowledging the practical results of the NWPG's efforts, we identify challenges that the northwest still faces in integrating renewable energy. We argue that trans-regional administrative barriers are preventing the effective utilization of renewable energy nationwide. To address those barriers, we explore market-based mechanisms for promoting the integration of large-scale renewable energy. In addition to long-term contracts for renewable energy across provinces, both spot-market and the ancillary service market would facilitate the uptake of renewable energy. In addition, price signals should be used to guide peak shaving. Market mechanisms will be insightful to dissolve barriers and enhance utilization of renewable energy throughout the country.
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| 2 |
ID:
186432
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| Summary/Abstract |
Hydropower holds the largest renewable share in global electricity supply and will remain as a key technology for greenhouse gas mitigation in future. Rapid deployment of hydropower projects without storage has created the risks of hydropower generation far exceeding electricity demand in coming years in Nepal. This paper attempts to assess the volume of such surplus energy by proposing the Integrated MARKAL-EFOM System (TIMES) based framework suitable to estimate excess energy in renewable predominated system with detailed representation of hydropower. This study presents surplus renewable generation as Cross Border Electricity Trade (CBET) potential to show how instrumental CBET can be to avoid renewable energy curtailment with case study of Nepal. The results suggest Nepal not only can avoid 99.4 TWH of hydropower curtailment and financial loss of 500 billion Nepalese Rupees but also can reduce 81.5 million tons of CO2 equivalent emissions in India by 2030 using CBET policy instrument, however, timely construction of planned cross-border transmission lines is essential to reap the full benefits.
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