Did Accelerated Depreciation Result in Lower Generation Efficiencies for Wind Plants in India: An Empirical Analysis

Details

Author(s):
  • Gireesh Shrimali
  • Shreya Pusarla
  • Saurabh Trivedi
Publish Date:
December 4, 2016
Publication Title:
Energy Policy
Format:
Journal Article
Citation(s):
  • Gireesh Shrimali, Shreya Pusarla, and Saurabh Trivedi, Did Accelerated Depreciation Result in Lower Generation Efficiencies for Wind Plants in India: An Empirical Analysis, 102 Energy Policy 154 (2017).
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Abstract

India ranks fifth in wind energy installations in the world; with an installed wind capacity is 22GW at the end of 2014. This has been made possible by a combination of federal financial incentives and state-level feed in tariffs. The federal policies are accelerated depreciation, which allows for higher depreciations in earlier years; and generation based incentive, which provides a premium for each unit of generation. Accelerated depreciation appears to be more effective from deployment and cost perspectives; whereas, generation based incentive is said to be more effective in incentivizing generation. In this paper, using multivariable linear regressions on a sample of approximately 40 wind plants, while controlling for wind regime and wind turbine technology, we investigate the incremental impact of generation based incentive compared to accelerated depreciation. We find that generation based incentive results in at least 3 percentage points higher plant load factors than accelerated depreciation. This indicates that, if higher generation is the goal of renewable policies, generation based incentive should be preferred to accelerated depreciation. This would be similar to the move from investment tax credit to production tax credit in the U.S.