Economic Assessment of Ocean Alkalinity Enhancement Through Electrodialysis: The Role of Carbon Credits in Comparing Solar Energy and Thermal Waste Technologies
電気透析による海洋アルカリ度向上の経済評価：太陽エネルギーと廃熱技術の比較における炭素クレジットの役割 (AI 翻訳)
Idiano D’Adamo, Gabriele Graziano, Francesco Ferella
🤖 gxceed AI 要約
日本語
本研究は、二酸化炭素除去のための海洋アルカリ度向上（OAE）プラントの経済的実現可能性を評価。太陽エネルギー（SE）と廃熱（TEW）の2構成を比較し、炭素クレジット価格とインフレ率の影響を分析。年間878トンのCO2除去能力（米国ベース）で、正味現在価値（NPV）を指標とする。結果、高価格シナリオでのみNPVが正となり、TEW構成がより経済的に堅牢であることを示す。
English
This study assesses the economic feasibility of Ocean Alkalinity Enhancement (OAE) for CO2 removal by comparing solar energy (SE) and thermal waste (TEW) configurations under varying carbon credit prices and inflation. Using NPV for a 878 tCO2/yr plant (US-based), it finds profitability highly sensitive to carbon prices, with TEW more robust. Break-even thresholds are around $1177-1602/tCO2.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本は海洋国であり、ブルーカーボンやCCUS技術への関心が高い。本研究は炭素クレジット市場の安定性がCDR技術の事業化に不可欠であることを示し、日本のGX政策やカーボンプライシング議論に示唆を与える。
In the global GX context
This paper contributes to the global discourse on carbon dioxide removal (CDR) economics. It underscores the critical role of stable carbon markets and policy support for technologies like OAE, aligning with ISSB and TCFD frameworks that require disclosure of climate-related risks and opportunities, including investment in removal technologies.
👥 読者別の含意
🔬研究者:Provides a detailed discounted cash flow model for OAE technology, highlighting break-even carbon credit prices and sensitivity to inflation, useful for further techno-economic comparisons of CDR methods.
🏢実務担当者:Informs investment decisions in OAE projects by quantifying financial viability under different carbon price scenarios, relevant for firms exploring carbon removal credits in their net-zero strategies.
🏛政策担当者:Emphasizes the need for high and stable carbon prices to incentivize CDR deployment, offering specific break-even thresholds for policy design and carbon market infrastructure.
📄 Abstract（原文）
ABSTRACT This study evaluates the economic feasibility of an Ocean Alkalinity Enhancement (OAE) plant for CO 2 removal by comparing Solar Energy (SE) and Thermal Energy Waste (TEW) configurations under varying carbon credit price and inflation scenarios in order to assess investment attractiveness. The methodology is based on a discounted cash flow model, using Net Present Value (NPV) as the primary indicator, applied to a plant with an annual CO 2 removal capacity of 878 tonnes, located in the United States and assessed over a 20‐year time horizon. Results show that project profitability is highly sensitive to carbon credit prices. Under high‐price scenarios, positive NPVs can be achieved, whereas medium and low‐price scenarios consistently result in negative outcomes. Break‐even thresholds are estimated at approximately 1177–1472$/tCO 2 for the TEW configuration and 1300–1602$/tCO 2 for the SE configuration, depending on inflation assumptions and the opportunity cost of capital. The TEW configuration appears more economically robust, exhibiting a higher likelihood of financial viability under favorable market conditions. These findings underline the crucial role of stable carbon markets and supportive policy frameworks in improving the economic sustainability of OAE technologies and fostering circular economy‐based business models aligned with marine ecosystem protection, supporting SDG 14.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1002/adsu.70518first seen 2026-06-17 05:44:51 · last seen 2026-06-17 07:14:03
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