Discounting for Energy Transition Policies—Estimation of the Social Discount Rate for Poland

The transition of the energy system in Poland has a long time horizon and demands a substantial investment effort supported by proper economic evaluation. It requires a precise Social Discount Rate (SDR) estimation as discounting makes the present value of long-term effects extremely sensitive to th...

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Main Authors: Monika Foltyn-Zarychta, Rafał Buła, Krystian Pera
Format: Article
Language:English
Published: MDPI AG 2021-01-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/14/3/741
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author Monika Foltyn-Zarychta
Rafał Buła
Krystian Pera
author_facet Monika Foltyn-Zarychta
Rafał Buła
Krystian Pera
author_sort Monika Foltyn-Zarychta
collection DOAJ
description The transition of the energy system in Poland has a long time horizon and demands a substantial investment effort supported by proper economic evaluation. It requires a precise Social Discount Rate (SDR) estimation as discounting makes the present value of long-term effects extremely sensitive to the discount rate level. However, Polish policymakers have little information on SDR: the predominant practice applies <i>a priori</i> fixed 5% discount rate, while studies devoted only to Poland are quite rare. To eliminate this research gap, our paper aims at estimating SDR for Poland, applicable in energy transition policies. We derive SDR for three datasets varying in length, twofold: using market rates via Consumption Rate of Interest (CRI) and Social Opportunity Cost (SOC) of capital, and prescriptive Ramsey and Gollier approaches based on Social Welfare Function (SWF). The results indicate that the rates based on CRI and SOC deviate substantially with changing data timeframes and market conditions, while prescriptive methods show much higher time stability. Due to long-term planning horizons for energy policies, we argue for adopting, as SDR in Poland, the longest dataset’s Ramsey-based rate of 4.72% which can be reduced to 4.39% by Gollier’s precautionary term (reflecting the uncertainty over future consumption growth), which are our main findings.
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spelling doaj.art-cf27f7261a324f72b012bbb67c583b402023-12-03T11:48:15ZengMDPI AGEnergies1996-10732021-01-0114374110.3390/en14030741Discounting for Energy Transition Policies—Estimation of the Social Discount Rate for PolandMonika Foltyn-Zarychta0Rafał Buła1Krystian Pera2Department of Investment, College of Finance, University of Economics in Katowice, 40-287 Katowice, PolandDepartment of Investment, College of Finance, University of Economics in Katowice, 40-287 Katowice, PolandDepartment of Investment, College of Finance, University of Economics in Katowice, 40-287 Katowice, PolandThe transition of the energy system in Poland has a long time horizon and demands a substantial investment effort supported by proper economic evaluation. It requires a precise Social Discount Rate (SDR) estimation as discounting makes the present value of long-term effects extremely sensitive to the discount rate level. However, Polish policymakers have little information on SDR: the predominant practice applies <i>a priori</i> fixed 5% discount rate, while studies devoted only to Poland are quite rare. To eliminate this research gap, our paper aims at estimating SDR for Poland, applicable in energy transition policies. We derive SDR for three datasets varying in length, twofold: using market rates via Consumption Rate of Interest (CRI) and Social Opportunity Cost (SOC) of capital, and prescriptive Ramsey and Gollier approaches based on Social Welfare Function (SWF). The results indicate that the rates based on CRI and SOC deviate substantially with changing data timeframes and market conditions, while prescriptive methods show much higher time stability. Due to long-term planning horizons for energy policies, we argue for adopting, as SDR in Poland, the longest dataset’s Ramsey-based rate of 4.72% which can be reduced to 4.39% by Gollier’s precautionary term (reflecting the uncertainty over future consumption growth), which are our main findings.https://www.mdpi.com/1996-1073/14/3/741energy policyeconomic appraisalsocial discount rateRamsey formulaconsumption rate of interestsocial opportunity cost
spellingShingle Monika Foltyn-Zarychta
Rafał Buła
Krystian Pera
Discounting for Energy Transition Policies—Estimation of the Social Discount Rate for Poland
Energies
energy policy
economic appraisal
social discount rate
Ramsey formula
consumption rate of interest
social opportunity cost
title Discounting for Energy Transition Policies—Estimation of the Social Discount Rate for Poland
title_full Discounting for Energy Transition Policies—Estimation of the Social Discount Rate for Poland
title_fullStr Discounting for Energy Transition Policies—Estimation of the Social Discount Rate for Poland
title_full_unstemmed Discounting for Energy Transition Policies—Estimation of the Social Discount Rate for Poland
title_short Discounting for Energy Transition Policies—Estimation of the Social Discount Rate for Poland
title_sort discounting for energy transition policies estimation of the social discount rate for poland
topic energy policy
economic appraisal
social discount rate
Ramsey formula
consumption rate of interest
social opportunity cost
url https://www.mdpi.com/1996-1073/14/3/741
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AT rafałbuła discountingforenergytransitionpoliciesestimationofthesocialdiscountrateforpoland
AT krystianpera discountingforenergytransitionpoliciesestimationofthesocialdiscountrateforpoland