ソーラー型淡水化市場、2032年までの予測：淡水化方法、容量、技術、エンドユーザー、地域別の世界分析

Stratistics MRCによると、世界のソーラー型淡水化市場は、2025年に31億米ドルを占め、予測期間中にCAGR 8.5%で成長し、2032年には54億米ドルに達する見込みです。

太陽熱を利用した淡水化は、太陽エネルギーを利用して海水や汽水から塩分や不純物を除去し、淡水を生産する方法です。太陽熱蒸発や太陽光発電を利用した逆浸透などのプロセスを通じて行われます。この技術では、太陽光を利用して水を直接加熱するか、淡水化システムを動かす電気を生成します。この方法は持続可能で、再生可能エネルギーに依存し、化石燃料への依存を減らすことができます。

国連の『世界水開発報告書2024』によると、4人に1人が清潔な水を利用できていないです。メキシコのような都市は危機的な水不足に直面しており、貯水池の水位は2025年初頭に63.7％まで低下し、当局は2024年以前に比べて干ばつ状態が悪化すると警告しています。

淡水不足の増大と世界の水需要の増加

淡水不足の深刻化と工業・農業・住宅分野にわたる水消費量の急増により、ソーラー型淡水化市場は大きな勢いを見せています。都市化の進展と水不足地域の人口増加が相まって、持続可能な水源への需要が高まっています。太陽熱脱塩システムは、エネルギー効率が高く、環境的に実行可能なソリューションです。政府や世界の水当局は、長期的な水安全保障戦略において、太陽熱を利用したシステムをますます優先するようになっています。

ハイブリッド・システム統合における技術的複雑性

有望な成長にもかかわらず、市場は、太陽エネルギーと淡水化技術の統合に伴う技術的な複雑さのために、運用上のハードルに直面しています。ハイブリッド・システム、特に太陽光発電と熱機構を組み合わせたシステムには、正確な調整、高度な制御システム、熟練した労働力が必要とされ、システム設計の複雑さを高めています。このような統合の課題は、試運転にかかる時間を増加させ、先行エンジニアリング・コストを上昇させる。さらに、こうしたマルチモーダルシステムのメンテナンスは、遠隔地や過疎地では厳しいものとなります。その結果、このような制約が、コストに敏感な利害関係者や小規模事業者の採用を妨げる可能性があります。

モジュール式で拡張可能な淡水化装置の開発

モジュール式で拡張可能な太陽熱脱塩装置の出現は、特に分散型アプリケーションにおいて、市場急拡大の有力な機会を開きます。このようなコンパクトでプラグアンドプレイのシステムは、オフグリッドや遠隔地に理想的であり、大規模なインフラへの依存を減らすことができます。水需要や予算の制約に合わせて、段階的に拡張することができます。さらに、機動性の向上と設置の簡素化は、人道的活動、軍事的活動、災害救援活動にアピールします。このイノベーション主導のシフトは、新興経済諸国や農村地帯での市場開拓を支援し、世界中で未開拓の大きな可能性を解き放ちます。

太陽放射照度の季節的・地理的変動

普及を阻む大きな脅威は、季節変動や地理的格差に起因する太陽放射照度の不一致です。雲に覆われたり、季節風が吹いたり、極地の冬になると、太陽エネルギーの利用が妨げられ、淡水化の性能と信頼性が損なわれる可能性があります。このような不確実性は、貯蔵システムやハイブリッドバックアップソリューションを必要とし、運転コストを上昇させる。日照時間が非常に不安定な地域では、投資収益率が予測しにくくなります。このような環境依存性は、特に淡水の無停止供給を必要とする用途において、安定した出力を維持する上での課題となります。

COVID-19の影響：

COVID-19の大流行は当初、建設活動と国際物流の制限により、太陽熱淡水化分野のサプライチェーンとプロジェクトのスケジュールを混乱させました。しかし、この危機は、中央集権的な水インフラの脆弱性と、弾力性のある分散型の水ソリューションの緊急性を浮き彫りにしました。政府やNGOは、持続可能な地域レベルの淡水化プロジェクトを重視し始めました。一部の地域では、パンデミック後の復興策に清潔な水へのアクセスを戦略的優先事項として盛り込み、太陽光発電システムへの投資を加速させました。この二重のインパクトが、市場の勢いを変えました。

予測期間中、逆浸透（RO）分野が最大となる見込み

逆浸透（RO）分野は、その高いエネルギー効率、モジュール式の拡張性、幅広い汚染物質を除去する能力に後押しされ、予測期間中最大の市場シェアを占めると予想されます。RO技術は、その適応性と環境への影響の低さから、汽水と海水の両方の用途で広く採用されています。太陽光発電システムとの互換性が高いため、非電化や遠隔地の環境でも好ましいソリューションとなっています。さらに、膜コストの低下が、この分野の世界の普及を後押ししています。

予測期間中、太陽光発電（PV）ベースの淡水化分野が最もCAGRが高いと予想されます。

予測期間中、太陽光発電（PV）ベースの淡水化分野は、太陽電池モジュール効率の急速な向上、PVパネル価格の下落、簡素化されたシステムアーキテクチャの影響を受け、最も高い成長率を記録すると予測されます。PVを利用した淡水化は、熱的な複雑さを回避し、柔軟でモジュール化された設備を提供するため、特に遠隔地や災害の多い地域に適しています。乾燥地域ではオフグリッド太陽光発電システムの導入が増加しており、PVの統合がさらに加速しています。支持的な規制枠組みや世界の太陽エネルギー普及の高まりも、PVの堅調な成長に寄与しています。

最大のシェアを占める地域

予測期間中、アジア太平洋地域が最大の市場シェアを占めると予想されます。これは、水不足の深刻化、人口基盤の拡大、持続可能な手段で淡水不足に対処しようとする政府の積極的な取り組みが背景にあります。インド、中国、オーストラリアなどの国々は、太陽熱淡水化を含む再生可能エネルギーによる水インフラに多額の投資を行っています。地域のイノベーション・ハブや官民パートナーシップは、技術の現地化をさらに加速させる。さらに、島嶼国や農村地域に広く導入されることで、APAC市場の優位性が維持されると予想されます。

CAGRが最も高い地域：

予測期間中、北米地域は最も高いCAGRを示すと予測されます。これは、気候に起因する干ばつの増加、先進的な研究開発イニシアティブ、クリーンウォーターインフラストラクチャの支援政策による。米国とカナダは、乾燥地帯や先住民コミュニティの水回復力を強化するため、分散型太陽熱淡水化プロジェクトに投資しています。化石燃料ベースの淡水化を削減するための連邦政府のインセンティブと環境規制の圧力が、市場の移行を促しています。スマートグリッドやIoTモニタリングとの統合は、この地域での技術採用をさらに促進します。

無料カスタマイズサービス：

本レポートをご購読のお客様には、以下の無料カスタマイズオプションのいずれかをご利用いただけます：

• 企業プロファイル
  • 追加市場プレイヤーの包括的プロファイリング（3社まで）
  • 主要企業のSWOT分析（3社まで）
• 地域セグメンテーション
  • 顧客の関心に応じた主要国の市場推計・予測・CAGR（注：フィージビリティチェックによる）
• 競合ベンチマーキング
  • 製品ポートフォリオ、地理的プレゼンス、戦略的提携に基づく主要企業のベンチマーキング

目次

第1章 エグゼクティブサマリー

第2章 序文

• 概要
• ステークホルダー
• 調査範囲
• 調査手法
  • データマイニング
  • データ分析
  • データ検証
  • 調査アプローチ
• 調査資料
  • 1次調査資料
  • 2次調査情報源
  • 前提条件

第3章 市場動向分析

• 促進要因
• 抑制要因
• 機会
• 脅威
• 技術分析
• エンドユーザー分析
• 新興市場
• COVID-19の影響

第4章 ポーターのファイブフォース分析

• 供給企業の交渉力
• 買い手の交渉力
• 代替品の脅威
• 新規参入業者の脅威
• 競争企業間の敵対関係

第5章 世界のソーラー型淡水化市場：淡水化方式別

• 逆浸透（RO）
• 多重効果蒸留（MED）
• マルチステージフラッシュ（MSF）
• 電気透析（ED）
• その他の淡水化方法

第6章 世界のソーラー型淡水化市場：容量別

• 小規模（1MLD未満）
• 中規模（1 MLD-10 MLD）
• 大規模（10MLD以上）

第7章 世界のソーラー型淡水化市場：技術別

• 太陽光発電（PV）による淡水化
• 集光型ソーラーパワー（CSP）による淡水化

第8章 世界のソーラー型淡水化市場：エンドユーザー別

• 農業
• 産業
• 自治体
• 商業

第9章 世界のソーラー型淡水化市場：地域別

• 北米
  • 米国
  • カナダ
  • メキシコ
• 欧州
  • ドイツ
  • 英国
  • イタリア
  • フランス
  • スペイン
  • その他欧州
• アジア太平洋
  • 日本
  • 中国
  • インド
  • オーストラリア
  • ニュージーランド
  • 韓国
  • その他アジア太平洋地域
• 南米
  • アルゼンチン
  • ブラジル
  • チリ
  • その他南米
• 中東・アフリカ
  • サウジアラビア
  • アラブ首長国連邦
  • カタール
  • 南アフリカ
  • その他中東とアフリカ

第10章 主な発展

• 契約、パートナーシップ、コラボレーション、ジョイントベンチャー
• 買収と合併
• 新製品発売
• 事業拡大
• その他の主要戦略

第11章 企業プロファイリング

• SolarSpring GmbH
• Aqua Green Engineering Co.
• Solar Water Solutions Inc.
• SolAqua Inc.
• SunDesal Systems Ltd.
• PureSun Desalination LLC
• SolarDrops Technologies Ltd.
• AquaSun Innovations Pty Ltd.
• SolarClear Water Solutions Ltd.
• SunDrop Desalination Systems Inc.
• SolarStream Desalination LLC
• AquaSolar Solutions Ltd.
• SunPure Water Technologies Inc.
• SolWaves Desalination Ltd.
• SolarAqua Desalination Systems Inc.
• ACCIONA
• Desolenator
• Elemental Water Makers B.V
• Aquatech
• IDE

List of Tables

• Table 1 Global Solar Powered Water Desalination Market Outlook, By Region (2024-2032) ($MN)
• Table 2 Global Solar Powered Water Desalination Market Outlook, By Desalination Method (2024-2032) ($MN)
• Table 3 Global Solar Powered Water Desalination Market Outlook, By Reverse Osmosis (RO) (2024-2032) ($MN)
• Table 4 Global Solar Powered Water Desalination Market Outlook, By Multi-Effect Distillation (MED) (2024-2032) ($MN)
• Table 5 Global Solar Powered Water Desalination Market Outlook, By Multi-Stage Flash (MSF) (2024-2032) ($MN)
• Table 6 Global Solar Powered Water Desalination Market Outlook, By Electrodialysis (ED) (2024-2032) ($MN)
• Table 7 Global Solar Powered Water Desalination Market Outlook, By Other Desalination Methods (2024-2032) ($MN)
• Table 8 Global Solar Powered Water Desalination Market Outlook, By Capacity (2024-2032) ($MN)
• Table 9 Global Solar Powered Water Desalination Market Outlook, By Small-Scale (Below 1 MLD) (2024-2032) ($MN)
• Table 10 Global Solar Powered Water Desalination Market Outlook, By Medium-Scale (1 MLD - 10 MLD) (2024-2032) ($MN)
• Table 11 Global Solar Powered Water Desalination Market Outlook, By Large-Scale (Above 10 MLD) (2024-2032) ($MN)
• Table 12 Global Solar Powered Water Desalination Market Outlook, By Technology (2024-2032) ($MN)
• Table 13 Global Solar Powered Water Desalination Market Outlook, By Photovoltaic (PV) Based Desalination (2024-2032) ($MN)
• Table 14 Global Solar Powered Water Desalination Market Outlook, By Concentrated Solar Power (CSP) Based Desalination (2024-2032) ($MN)
• Table 15 Global Solar Powered Water Desalination Market Outlook, By End User (2024-2032) ($MN)
• Table 16 Global Solar Powered Water Desalination Market Outlook, By Agricultural (2024-2032) ($MN)
• Table 17 Global Solar Powered Water Desalination Market Outlook, By Industrial (2024-2032) ($MN)
• Table 18 Global Solar Powered Water Desalination Market Outlook, By Municipal (2024-2032) ($MN)
• Table 19 Global Solar Powered Water Desalination Market Outlook, By Commercial (2024-2032) ($MN)
• Table 20 North America Solar Powered Water Desalination Market Outlook, By Country (2024-2032) ($MN)
• Table 21 North America Solar Powered Water Desalination Market Outlook, By Desalination Method (2024-2032) ($MN)
• Table 22 North America Solar Powered Water Desalination Market Outlook, By Reverse Osmosis (RO) (2024-2032) ($MN)
• Table 23 North America Solar Powered Water Desalination Market Outlook, By Multi-Effect Distillation (MED) (2024-2032) ($MN)
• Table 24 North America Solar Powered Water Desalination Market Outlook, By Multi-Stage Flash (MSF) (2024-2032) ($MN)
• Table 25 North America Solar Powered Water Desalination Market Outlook, By Electrodialysis (ED) (2024-2032) ($MN)
• Table 26 North America Solar Powered Water Desalination Market Outlook, By Other Desalination Methods (2024-2032) ($MN)
• Table 27 North America Solar Powered Water Desalination Market Outlook, By Capacity (2024-2032) ($MN)
• Table 28 North America Solar Powered Water Desalination Market Outlook, By Small-Scale (Below 1 MLD) (2024-2032) ($MN)
• Table 29 North America Solar Powered Water Desalination Market Outlook, By Medium-Scale (1 MLD - 10 MLD) (2024-2032) ($MN)
• Table 30 North America Solar Powered Water Desalination Market Outlook, By Large-Scale (Above 10 MLD) (2024-2032) ($MN)
• Table 31 North America Solar Powered Water Desalination Market Outlook, By Technology (2024-2032) ($MN)
• Table 32 North America Solar Powered Water Desalination Market Outlook, By Photovoltaic (PV) Based Desalination (2024-2032) ($MN)
• Table 33 North America Solar Powered Water Desalination Market Outlook, By Concentrated Solar Power (CSP) Based Desalination (2024-2032) ($MN)
• Table 34 North America Solar Powered Water Desalination Market Outlook, By End User (2024-2032) ($MN)
• Table 35 North America Solar Powered Water Desalination Market Outlook, By Agricultural (2024-2032) ($MN)
• Table 36 North America Solar Powered Water Desalination Market Outlook, By Industrial (2024-2032) ($MN)
• Table 37 North America Solar Powered Water Desalination Market Outlook, By Municipal (2024-2032) ($MN)
• Table 38 North America Solar Powered Water Desalination Market Outlook, By Commercial (2024-2032) ($MN)
• Table 39 Europe Solar Powered Water Desalination Market Outlook, By Country (2024-2032) ($MN)
• Table 40 Europe Solar Powered Water Desalination Market Outlook, By Desalination Method (2024-2032) ($MN)
• Table 41 Europe Solar Powered Water Desalination Market Outlook, By Reverse Osmosis (RO) (2024-2032) ($MN)
• Table 42 Europe Solar Powered Water Desalination Market Outlook, By Multi-Effect Distillation (MED) (2024-2032) ($MN)
• Table 43 Europe Solar Powered Water Desalination Market Outlook, By Multi-Stage Flash (MSF) (2024-2032) ($MN)
• Table 44 Europe Solar Powered Water Desalination Market Outlook, By Electrodialysis (ED) (2024-2032) ($MN)
• Table 45 Europe Solar Powered Water Desalination Market Outlook, By Other Desalination Methods (2024-2032) ($MN)
• Table 46 Europe Solar Powered Water Desalination Market Outlook, By Capacity (2024-2032) ($MN)
• Table 47 Europe Solar Powered Water Desalination Market Outlook, By Small-Scale (Below 1 MLD) (2024-2032) ($MN)
• Table 48 Europe Solar Powered Water Desalination Market Outlook, By Medium-Scale (1 MLD - 10 MLD) (2024-2032) ($MN)
• Table 49 Europe Solar Powered Water Desalination Market Outlook, By Large-Scale (Above 10 MLD) (2024-2032) ($MN)
• Table 50 Europe Solar Powered Water Desalination Market Outlook, By Technology (2024-2032) ($MN)
• Table 51 Europe Solar Powered Water Desalination Market Outlook, By Photovoltaic (PV) Based Desalination (2024-2032) ($MN)
• Table 52 Europe Solar Powered Water Desalination Market Outlook, By Concentrated Solar Power (CSP) Based Desalination (2024-2032) ($MN)
• Table 53 Europe Solar Powered Water Desalination Market Outlook, By End User (2024-2032) ($MN)
• Table 54 Europe Solar Powered Water Desalination Market Outlook, By Agricultural (2024-2032) ($MN)
• Table 55 Europe Solar Powered Water Desalination Market Outlook, By Industrial (2024-2032) ($MN)
• Table 56 Europe Solar Powered Water Desalination Market Outlook, By Municipal (2024-2032) ($MN)
• Table 57 Europe Solar Powered Water Desalination Market Outlook, By Commercial (2024-2032) ($MN)
• Table 58 Asia Pacific Solar Powered Water Desalination Market Outlook, By Country (2024-2032) ($MN)
• Table 59 Asia Pacific Solar Powered Water Desalination Market Outlook, By Desalination Method (2024-2032) ($MN)
• Table 60 Asia Pacific Solar Powered Water Desalination Market Outlook, By Reverse Osmosis (RO) (2024-2032) ($MN)
• Table 61 Asia Pacific Solar Powered Water Desalination Market Outlook, By Multi-Effect Distillation (MED) (2024-2032) ($MN)
• Table 62 Asia Pacific Solar Powered Water Desalination Market Outlook, By Multi-Stage Flash (MSF) (2024-2032) ($MN)
• Table 63 Asia Pacific Solar Powered Water Desalination Market Outlook, By Electrodialysis (ED) (2024-2032) ($MN)
• Table 64 Asia Pacific Solar Powered Water Desalination Market Outlook, By Other Desalination Methods (2024-2032) ($MN)
• Table 65 Asia Pacific Solar Powered Water Desalination Market Outlook, By Capacity (2024-2032) ($MN)
• Table 66 Asia Pacific Solar Powered Water Desalination Market Outlook, By Small-Scale (Below 1 MLD) (2024-2032) ($MN)
• Table 67 Asia Pacific Solar Powered Water Desalination Market Outlook, By Medium-Scale (1 MLD - 10 MLD) (2024-2032) ($MN)
• Table 68 Asia Pacific Solar Powered Water Desalination Market Outlook, By Large-Scale (Above 10 MLD) (2024-2032) ($MN)
• Table 69 Asia Pacific Solar Powered Water Desalination Market Outlook, By Technology (2024-2032) ($MN)
• Table 70 Asia Pacific Solar Powered Water Desalination Market Outlook, By Photovoltaic (PV) Based Desalination (2024-2032) ($MN)
• Table 71 Asia Pacific Solar Powered Water Desalination Market Outlook, By Concentrated Solar Power (CSP) Based Desalination (2024-2032) ($MN)
• Table 72 Asia Pacific Solar Powered Water Desalination Market Outlook, By End User (2024-2032) ($MN)
• Table 73 Asia Pacific Solar Powered Water Desalination Market Outlook, By Agricultural (2024-2032) ($MN)
• Table 74 Asia Pacific Solar Powered Water Desalination Market Outlook, By Industrial (2024-2032) ($MN)
• Table 75 Asia Pacific Solar Powered Water Desalination Market Outlook, By Municipal (2024-2032) ($MN)
• Table 76 Asia Pacific Solar Powered Water Desalination Market Outlook, By Commercial (2024-2032) ($MN)
• Table 77 South America Solar Powered Water Desalination Market Outlook, By Country (2024-2032) ($MN)
• Table 78 South America Solar Powered Water Desalination Market Outlook, By Desalination Method (2024-2032) ($MN)
• Table 79 South America Solar Powered Water Desalination Market Outlook, By Reverse Osmosis (RO) (2024-2032) ($MN)
• Table 80 South America Solar Powered Water Desalination Market Outlook, By Multi-Effect Distillation (MED) (2024-2032) ($MN)
• Table 81 South America Solar Powered Water Desalination Market Outlook, By Multi-Stage Flash (MSF) (2024-2032) ($MN)
• Table 82 South America Solar Powered Water Desalination Market Outlook, By Electrodialysis (ED) (2024-2032) ($MN)
• Table 83 South America Solar Powered Water Desalination Market Outlook, By Other Desalination Methods (2024-2032) ($MN)
• Table 84 South America Solar Powered Water Desalination Market Outlook, By Capacity (2024-2032) ($MN)
• Table 85 South America Solar Powered Water Desalination Market Outlook, By Small-Scale (Below 1 MLD) (2024-2032) ($MN)
• Table 86 South America Solar Powered Water Desalination Market Outlook, By Medium-Scale (1 MLD - 10 MLD) (2024-2032) ($MN)
• Table 87 South America Solar Powered Water Desalination Market Outlook, By Large-Scale (Above 10 MLD) (2024-2032) ($MN)
• Table 88 South America Solar Powered Water Desalination Market Outlook, By Technology (2024-2032) ($MN)
• Table 89 South America Solar Powered Water Desalination Market Outlook, By Photovoltaic (PV) Based Desalination (2024-2032) ($MN)
• Table 90 South America Solar Powered Water Desalination Market Outlook, By Concentrated Solar Power (CSP) Based Desalination (2024-2032) ($MN)
• Table 91 South America Solar Powered Water Desalination Market Outlook, By End User (2024-2032) ($MN)
• Table 92 South America Solar Powered Water Desalination Market Outlook, By Agricultural (2024-2032) ($MN)
• Table 93 South America Solar Powered Water Desalination Market Outlook, By Industrial (2024-2032) ($MN)
• Table 94 South America Solar Powered Water Desalination Market Outlook, By Municipal (2024-2032) ($MN)
• Table 95 South America Solar Powered Water Desalination Market Outlook, By Commercial (2024-2032) ($MN)
• Table 96 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Country (2024-2032) ($MN)
• Table 97 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Desalination Method (2024-2032) ($MN)
• Table 98 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Reverse Osmosis (RO) (2024-2032) ($MN)
• Table 99 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Multi-Effect Distillation (MED) (2024-2032) ($MN)
• Table 100 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Multi-Stage Flash (MSF) (2024-2032) ($MN)
• Table 101 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Electrodialysis (ED) (2024-2032) ($MN)
• Table 102 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Other Desalination Methods (2024-2032) ($MN)
• Table 103 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Capacity (2024-2032) ($MN)
• Table 104 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Small-Scale (Below 1 MLD) (2024-2032) ($MN)
• Table 105 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Medium-Scale (1 MLD - 10 MLD) (2024-2032) ($MN)
• Table 106 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Large-Scale (Above 10 MLD) (2024-2032) ($MN)
• Table 107 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Technology (2024-2032) ($MN)
• Table 108 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Photovoltaic (PV) Based Desalination (2024-2032) ($MN)
• Table 109 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Concentrated Solar Power (CSP) Based Desalination (2024-2032) ($MN)
• Table 110 Middle East & Africa Solar Powered Water Desalination Market Outlook, By End User (2024-2032) ($MN)
• Table 111 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Agricultural (2024-2032) ($MN)
• Table 112 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Industrial (2024-2032) ($MN)
• Table 113 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Municipal (2024-2032) ($MN)
• Table 114 Middle East & Africa Solar Powered Water Desalination Market Outlook, By Commercial (2024-2032) ($MN)

According to Stratistics MRC, the Global Solar Powered Water Desalination Market is accounted for $3.1 billion in 2025 and is expected to reach $5.4 billion by 2032 growing at a CAGR of 8.5% during the forecast period. Solar powered water desalination is a method that uses solar energy to remove salts and impurities from seawater or brackish water, producing fresh water. It operates through processes like solar thermal evaporation or photovoltaic-powered reverse osmosis. This technology harnesses sunlight either to directly heat water or to generate electricity that drives desalination systems. The method is sustainable, relying on renewable energy and reducing dependence on fossil fuels.

According to the UN World Water Development Report 2024, one in four people lacks access to clean water. Cities like Mexico are facing critical shortages, with reservoir levels dropping to 63.7% in early 2025 and authorities warning of worsening drought conditions compared to the previous year 2024.

Market Dynamics:

Driver:

Increasing freshwater scarcity and rising global water demand

Growing freshwater scarcity and surging water consumption across industrial, agricultural, and residential sectors, the solar powered water desalination market is witnessing significant momentum. Escalating urbanization, coupled with population growth in water-stressed regions, intensifies demand for sustainable water sources. Solar desalination systems present an energy-efficient and environmentally viable solution. Governments and global water authorities are increasingly prioritizing solar-based systems in long-term water security strategies.

Restraint:

Technical complexities in hybrid system integration

Despite promising growth, the market faces operational hurdles due to the technical intricacies of integrating solar energy with desalination technologies. Hybrid systems-especially those combining photovoltaic and thermal mechanisms-require precise coordination, advanced control systems, and skilled labor, elevating system design complexity. These integration challenges increase commissioning time and raise upfront engineering costs. Moreover, maintenance of these multi-modal systems becomes demanding in remote or underdeveloped regions. As a result, this restraint may deter adoption among cost-sensitive stakeholders and small-scale operators.

Opportunity:

Development of modular, scalable desalination units

The emergence of modular and scalable solar desalination units opens compelling opportunities for rapid market expansion, especially in decentralized applications. These compact, plug-and-play systems are ideal for off-grid and remote locations, reducing dependency on large infrastructure. They allow incremental scaling aligned with water demand and budget constraints. Furthermore, enhanced mobility and simplified installation appeal to humanitarian, military, and disaster relief operations. This innovation-driven shift supports market penetration in developing economies and rural zones, unlocking significant untapped potential worldwide.

Threat:

Seasonal and geographic variability in solar irradiance

A major threat restraining widespread implementation is the inconsistency in solar irradiance caused by seasonal fluctuations and geographic disparities. Cloud cover, monsoons, or polar winters can disrupt solar energy availability, compromising desalination performance and reliability. These uncertainties necessitate storage systems or hybrid backup solutions, escalating operational costs. In regions with highly erratic sunlight, return on investment becomes less predictable. This environmental dependency poses challenges in maintaining consistent output, especially in applications demanding uninterrupted freshwater supply.

Covid-19 Impact:

The COVID-19 pandemic initially disrupted supply chains and project timelines in the solar desalination space due to restrictions on construction activity and international logistics. However, the crisis also highlighted vulnerabilities in centralized water infrastructure and the urgency for resilient, decentralized water solutions. Governments and NGOs began emphasizing sustainable and local-level desalination projects. Post-pandemic recovery packages in some regions included clean water access as a strategic priority, accelerating investments in solar-powered systems. This dual-phase impact has reshaped market momentum.

The reverse osmosis (RO) segment is expected to be the largest during the forecast period

The reverse osmosis (RO) segment is expected to account for the largest market share during the forecast period propelled by, its high energy efficiency, modular scalability, and ability to remove a broad range of contaminants. RO technology is widely adopted across both brackish and seawater applications due to its adaptability and lower environmental impact. Its compatibility with solar PV systems makes it a preferred solution in off-grid and remote settings. Moreover, declining membrane costs further drive segment adoption globally.

The photovoltaic (PV) based desalination segment is expected to have the highest CAGR during the forecast period

Over the forecast period, the photovoltaic (PV) based desalination segment is predicted to witness the highest growth rate, influenced by rapid advancements in solar module efficiency, declining PV panel prices, and simplified system architectures. PV-powered desalination avoids thermal complexities and provides flexible, modular installations, especially suited for remote or disaster-prone zones. Increasing deployment of off-grid solar systems across arid regions further accelerates PV integration. Supportive regulatory frameworks and rising global solar energy adoption also contribute to this robust growth.

Region with largest share:

During the forecast period, the Asia Pacific region is expected to hold the largest market share, fuelled by, rising water stress, expanding population bases, and proactive government initiatives to address freshwater shortages through sustainable means. Countries like India, China, and Australia are investing heavily in renewable-powered water infrastructure, including solar desalination. Regional innovation hubs and public-private partnerships further accelerate technology localization. Additionally, widespread deployment in island nations and rural territories is expected to maintain APAC's market dominance.

Region with highest CAGR:

Over the forecast period, the North America region is anticipated to exhibit the highest CAGR, driven by, increasing climate-induced droughts, advanced R&D initiatives, and supportive clean water infrastructure policies. The U.S. and Canada are investing in decentralized solar desalination projects to strengthen water resilience in arid zones and indigenous communities. Federal incentives and environmental regulatory pressures to reduce fossil fuel-based desalination are encouraging market transition. Integration with smart grids and IoT monitoring further augments technological adoption in this region.

Key players in the market

Some of the key players in Solar Powered Water Desalination Market include SolarSpring GmbH, Aqua Green Engineering Co., Solar Water Solutions Inc., SolAqua Inc., SunDesal Systems Ltd., PureSun Desalination LLC, SolarDrops Technologies Ltd., AquaSun Innovations Pty Ltd., SolarClear Water Solutions Ltd., SunDrop Desalination Systems Inc., SolarStream Desalination LLC, AquaSolar Solutions Ltd., SunPure Water Technologies Inc., SolWaves Desalination Ltd., SolarAqua Desalination Systems Inc., ACCIONA, Desolenator, Elemental Water Makers B.V, Aquatech, and IDE.

Key Developments:

In June 2025, SolarSpring GmbH announced the launch of its next-generation modular solar membrane distillation units, featuring 30% higher efficiency than previous models, specifically designed for off-grid communities in water-stressed regions.

In March 2025, Solar Water Solutions Inc. introduced its new fully autonomous solar-powered reverse osmosis system with integrated AI-driven optimization for variable solar input conditions, capable of producing 20,000 liters/day with zero grid dependency.

In December 2024, Desolenator formed a partnership with India-based Jakson Green to scale its solar desalination technology in India and other global markets, focusing on zero liquid discharge and off-grid deployment.

Desalination Methods Covered:

• Reverse Osmosis (RO)
• Multi-Effect Distillation (MED)
• Multi-Stage Flash (MSF)
• Electrodialysis (ED)
• Other Desalination Methods

Capacities Covered:

• Small-Scale (Below 1 MLD)
• Medium-Scale (1 MLD - 10 MLD)
• Large-Scale (Above 10 MLD)

Technologies Covered:

• Photovoltaic (PV) Based Desalination
• Concentrated Solar Power (CSP) Based Desalination

End Users Covered:

• Agricultural
• Industrial
• Municipal
• Commercial

Regions Covered:

• North America
  • US
  • Canada
  • Mexico
• Europe
  • Germany
  • UK
  • Italy
  • France
  • Spain
  • Rest of Europe
• Asia Pacific
  • Japan
  • China
  • India
  • Australia
  • New Zealand
  • South Korea
  • Rest of Asia Pacific
• South America
  • Argentina
  • Brazil
  • Chile
  • Rest of South America
• Middle East & Africa
  • Saudi Arabia
  • UAE
  • Qatar
  • South Africa
  • Rest of Middle East & Africa

What our report offers:

• Market share assessments for the regional and country-level segments
• Strategic recommendations for the new entrants
• Covers Market data for the years 2024, 2025, 2026, 2028, and 2032
• Market Trends (Drivers, Constraints, Opportunities, Threats, Challenges, Investment Opportunities, and recommendations)
• Strategic recommendations in key business segments based on the market estimations
• Competitive landscaping mapping the key common trends
• Company profiling with detailed strategies, financials, and recent developments
• Supply chain trends mapping the latest technological advancements

Free Customization Offerings:

All the customers of this report will be entitled to receive one of the following free customization options:

• Company Profiling
  • Comprehensive profiling of additional market players (up to 3)
  • SWOT Analysis of key players (up to 3)
• Regional Segmentation
  • Market estimations, Forecasts and CAGR of any prominent country as per the client's interest (Note: Depends on feasibility check)
• Competitive Benchmarking
  • Benchmarking of key players based on product portfolio, geographical presence, and strategic alliances

Table of Contents

1 Executive Summary

2 Preface

• 2.1 Abstract
• 2.2 Stake Holders
• 2.3 Research Scope
• 2.4 Research Methodology
  • 2.4.1 Data Mining
  • 2.4.2 Data Analysis
  • 2.4.3 Data Validation
  • 2.4.4 Research Approach
• 2.5 Research Sources
  • 2.5.1 Primary Research Sources
  • 2.5.2 Secondary Research Sources
  • 2.5.3 Assumptions

3 Market Trend Analysis

• 3.1 Introduction
• 3.2 Drivers
• 3.3 Restraints
• 3.4 Opportunities
• 3.5 Threats
• 3.6 Technology Analysis
• 3.7 End User Analysis
• 3.8 Emerging Markets
• 3.9 Impact of Covid-19

4 Porters Five Force Analysis

• 4.1 Bargaining power of suppliers
• 4.2 Bargaining power of buyers
• 4.3 Threat of substitutes
• 4.4 Threat of new entrants
• 4.5 Competitive rivalry

5 Global Solar Powered Water Desalination Market, By Desalination Method

• 5.1 Introduction
• 5.2 Reverse Osmosis (RO)
• 5.3 Multi-Effect Distillation (MED)
• 5.4 Multi-Stage Flash (MSF)
• 5.5 Electrodialysis (ED)
• 5.6 Other Desalination Methods

6 Global Solar Powered Water Desalination Market, By Capacity

• 6.1 Introduction
• 6.2 Small-Scale (Below 1 MLD)
• 6.3 Medium-Scale (1 MLD - 10 MLD)
• 6.4 Large-Scale (Above 10 MLD)

7 Global Solar Powered Water Desalination Market, By Technology

• 7.1 Introduction
• 7.2 Photovoltaic (PV) Based Desalination
• 7.3 Concentrated Solar Power (CSP) Based Desalination

8 Global Solar Powered Water Desalination Market, By End User

• 8.1 Introduction
• 8.2 Agricultural
• 8.3 Industrial
• 8.4 Municipal
• 8.5 Commercial

9 Global Solar Powered Water Desalination Market, By Geography

• 9.1 Introduction
• 9.2 North America
  • 9.2.1 US
  • 9.2.2 Canada
  • 9.2.3 Mexico
• 9.3 Europe
  • 9.3.1 Germany
  • 9.3.2 UK
  • 9.3.3 Italy
  • 9.3.4 France
  • 9.3.5 Spain
  • 9.3.6 Rest of Europe
• 9.4 Asia Pacific
  • 9.4.1 Japan
  • 9.4.2 China
  • 9.4.3 India
  • 9.4.4 Australia
  • 9.4.5 New Zealand
  • 9.4.6 South Korea
  • 9.4.7 Rest of Asia Pacific
• 9.5 South America
  • 9.5.1 Argentina
  • 9.5.2 Brazil
  • 9.5.3 Chile
  • 9.5.4 Rest of South America
• 9.6 Middle East & Africa
  • 9.6.1 Saudi Arabia
  • 9.6.2 UAE
  • 9.6.3 Qatar
  • 9.6.4 South Africa
  • 9.6.5 Rest of Middle East & Africa

10 Key Developments

• 10.1 Agreements, Partnerships, Collaborations and Joint Ventures
• 10.2 Acquisitions & Mergers
• 10.3 New Product Launch
• 10.4 Expansions
• 10.5 Other Key Strategies

11 Company Profiling

• 11.1 SolarSpring GmbH
• 11.2 Aqua Green Engineering Co.
• 11.3 Solar Water Solutions Inc.
• 11.4 SolAqua Inc.
• 11.5 SunDesal Systems Ltd.
• 11.6 PureSun Desalination LLC
• 11.7 SolarDrops Technologies Ltd.
• 11.8 AquaSun Innovations Pty Ltd.
• 11.9 SolarClear Water Solutions Ltd.
• 11.10 SunDrop Desalination Systems Inc.
• 11.11 SolarStream Desalination LLC
• 11.12 AquaSolar Solutions Ltd.
• 11.13 SunPure Water Technologies Inc.
• 11.14 SolWaves Desalination Ltd.
• 11.15 SolarAqua Desalination Systems Inc.
• 11.16 ACCIONA
• 11.17 Desolenator
• 11.18 Elemental Water Makers B.V
• 11.19 Aquatech
• 11.20 IDE