Photo credit: Itaipu Binacional
CASE STUDIES
This compendium of selected case studies exemplifies activities and experiences using integrated systems and approaches to water and energy. The case studies cover different world regions and different integrated technological systems designed and implemented for different purposes and objectives. Some of them represent innovative approaches and systems that still are being demonstrated but have potential for future use. Others provide enhancements and added efficiencies that support more effective management of water and energy resources following an integrated approach. The case studies illustrate how synergies can be realized taking into consideration the strong interdependence that exists between water and energy. Some of these projects and experiences provide opportunities to accelerate global climate change objectives and to tackle the critical issues of access and reliability, especially for the effective planning and response to emergency situations and world crises such as pandemics.
![New Case Study by CANAL](https://www.un.org/sites/un2.un.org/files/image_for_case_study_1_canal-isabel-2_june2024.jpg)
Location: Spain
Management, Conservation and Operation Model for the Supply Network of a Large Metropolitan Area. Case Study Community of Madrid
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![New Case Study by CANAL](https://www.un.org/sites/un2.un.org/files/image_for_case_study_2_embalse_riosequillo_june2024.jpg)
Recommendations on the Implementation of Simulation and Optimisation Models of Water Resources Management in Water Management Systems for Hydrological Planning and the Development of Drought Management Plans
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![New Case Study by CANAL](https://www.un.org/sites/un2.un.org/files/arroyofresno-1.jpg)
Location: Spain
Good Practices in Urban Drainage Planning
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
This case study presents good practices on how to develop urban drainage network projects (sewage and rainwater drainage) to determine what aspects need to be considered based on the experience of Canal de Isabel II S.A.M.P. in the Madrid Region. The conditioning factors that affect the design of the networks, as well as the problems in their operation and ways of resolving them, are described.
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![New Case Study by CANAL](https://www.un.org/sites/un2.un.org/files/nrw-image_case_study_canal_on_agua_no_registrada.png)
Location: Spain
Management of NRW at Canal de Isabel II - A Case Study
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
Reducing Non-revenue water (NRW) is a complex issue that requires many coordinated actions. Canal de Isabel II has been reducing its NRW by applying an integrated approach that deals with every component of NRW at DMA level, which has led to a reduction of 30% over the last decade. To achieve this goal, a comprehensive set of performance indicators were required in order to determine actions to be taken at DMA level as well as assessing their performance. Such actions provide for a cycle of continuous improvement.
This case study sets out to showcase this set of indicators and how they have been instrumental in bringing about tangible results.
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![New Case Study by CANAL](https://www.un.org/sites/un2.un.org/files/image_for_canal_case_study_advanced_measurement_of_water_consumption_jan2024.jpg)
Location: Spain
New Case Study by CANAL: Advance Measurement of Water Consumption, January 2024
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
Canal De Isabel II produced a case study on how the measurement of water consumption is an essential element for the proper management of the resource. It is especially relevant in countries with water scarcity, but it undoubtedly brings clear benefits in those that do not have drought problems. In supplies that lack measurement of the consumption made by users, one of the best practices to gain efficiency in management is the installation of water meters
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![ASAZGUA’s 17 Case Studies](https://www.un.org/sites/un2.un.org/files/2023/04/sao_paulo_image_for_case_stusty_swes_network_webpage_april2023.jpeg)
Location: Sao Paulo, Brazil
Inventory and mapping of water services’ needs as a tool to prioritize investments for water systems’ development, Canal de Isabell II, 2023
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![ASAZGUA’s 17 Case Studies](https://www.un.org/sites/un2.un.org/files/2023/04/official_picture.png)
17 CASE STUDIES BY ASAZGUA DETAILING ACTIVITIES CONTRIBUTING TO THE 17 SUSTAINABLE DEVELOPMENT GOALS, MARCH 2023
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 1](https://www.un.org/sites/un2.un.org/files/2020/09/generating_hydropower_through_sustainable_management_of_natural_resources.png)
Location: Brazil/ Paraguay
Generating Hydropower through Sustainable Management of Natural Resources
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 2](https://www.un.org/sites/un2.un.org/files/2020/09/sustainable_desalination_renewable_energy_and_energy_storage_in_the_canary_islands_photo.jpg)
Location: Spain
Sustainable Desalination, Renewable Energy and Energy Storage in the Canary Islands
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 3](https://www.un.org/sites/un2.un.org/files/2020/09/water_biomass_and_energy_nexus_electricity_generation_from_sugarcane_biomass_in_guatemala_.jpg)
Location: Guatemala
Water, Biomass and Energy Nexus: Electricity Generation from Sugarcane Biomass in Guatemala
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 5](https://www.un.org/sites/un2.un.org/files/2020/09/the_hydrobalance_project-_energy_storage_from_hydropower_in_norway_supporting_intermittent_renewable_electricity_generation_in_europe_photo.jpg)
Location: Norway
The HydroBalance Project: Energy Storage from Hydropower in Norway Supporting Intermittent Renewable Electricity Generation in Europe
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 6](https://www.un.org/sites/un2.un.org/files/2020/09/new_sustainable_hydropower_plant_at_reventazon_river_in_costa_rica_and_biodiversity_protection_photo.jpg)
Location: Costa Rica
Sustainable Hydropower Plant at Reventazón River in Costa Rica and Biodiversity Protection
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 7](https://www.un.org/sites/un2.un.org/files/2020/09/desalination_through_sustainable_water_and_energy_solutions_in_west_asia_photo.jpg)
Location: Various locations, West Asia region
Desalination through Sustainable Water and Energy Solutions in West Asia
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 8](https://www.un.org/sites/un2.un.org/files/2020/09/generating_clean_electricity_and_contributing_to_climate_change_mitigation_goals-_the_rogun_hydropower_plant_tajikistan_photo.jpg)
Location: Rogun, Republic of Tajikistan
Generating Clean Electricity and Contributing to Climate Change Mitigation Goals: the Rogun Hydropower Plant
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 9](https://www.un.org/sites/un2.un.org/files/2020/09/new_resilience_of_electricity_generation_from_hydropower_in_colombia_coping_with_the_el_nino_event_and_associated_drought_2015-2016.jpg)
Location: Colombia
Resilience of Electricity Generation from Hydropower in Colombia: Coping with the El Niño Event and Associated Drought
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 10](https://www.un.org/sites/un2.un.org/files/2020/09/electricity_and_clean_water_from_integrated_self-_contained_utility_systems_in_tanzania_photo.jpg)
Location: Bunda, Ikungi and Busega, Tanzania
Electricity and Clean Water from Integrated, Self-Contained Utility Systems in Tanzania
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 11](https://www.un.org/sites/un2.un.org/files/2020/09/power_generation_from_solar_photovoltaic_panels_floating_on_water_reservoirs_option_2.jpg)
Location: Anhui, China
Power Generation from Solar Photovoltaic Panels Floating on Water Reservoirs
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 12](https://www.un.org/sites/un2.un.org/files/2020/09/sustainable_geothermal_power_generation_and_heating_of_greenhouses_and_spas_in_kenyas_rift_valley_photo.jpg)
Location: Rift Valley, Kenya
Sustainable Geothermal Power Generation and Heating of Greenhouses and Spas in Kenya’s Rift Valley
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 13](https://www.un.org/sites/un2.un.org/files/2020/09/new_run-of-river_hydropower_generation-_modernization_and_capacity_expansion_at_iffezheim_barrage_rhine_river_photo.jpg)
Location: Iffezheim on Rhine River, France and Germany
Run-of-River Hydropower Generation: Modernization and Capacity Expansion at Iffezheim Barrage, Rhine River
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 14](https://www.un.org/sites/un2.un.org/files/2020/09/sustainable_air-conditioning_and_water_heating_cooling_systems_of_seaside_commercial_buildings_using_seawater_photo_photo.jpg)
Location: Cape Town, South Africa
Sustainable Air-Conditioning and Water Heating/Cooling Systems of Seaside Commercial Buildings Using Seawater
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 16](https://www.un.org/sites/un2.un.org/files/2020/09/energy_efficiency_and_environmental_protection_in_wastewater_treatment_at_the_marselisborg_wastewater_treatment_plant_photo.jpg)
Location: Mareslisborg, Aarhus, Demark
Energy Efficiency and Environmental Protection in Wastewater Treatment: the Marselisborg Wastewater Treatment Plant
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 17](https://www.un.org/sites/un2.un.org/files/2020/09/new_solar_powered_water_desalination_for_small_islands_rodrigues_island_of_mauritius_photo_.jpg)
Location: Rodrigues Island, Republic of Mauritius
Solar Powered Water Desalination for Small Islands: Rodrigues Island of Mauritius
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 18](https://www.un.org/sites/un2.un.org/files/2020/09/new_hydropower_for_co2-free_electric_buses_in_old_town_of_regensburg_germany_photo.jpg)
Location: Regensburg, Bavaria, Germany
Hydropower for CO2-Free Electric Buses in Old Town of Regensburg, Germany
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 19](https://www.un.org/sites/un2.un.org/files/2020/09/new_purification_of_rural_drinking_water_supply_based_on_renewable_energy_photo.jpg)
Location: Calamul Campeche, Yucatan, Mexico
Purification of Rural Drinking Water Supply Based on Renewable Energy
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 20](https://www.un.org/sites/un2.un.org/files/2020/09/new_ocean_current_power_generation-_example_orbital_o2_uk_photo.jpg)
Location: Orkney Island, Scotland, UK
Ocean Current Power Generation: Example Orbital O2, UK
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 21](https://www.un.org/sites/un2.un.org/files/2020/11/eskom_holding_soc_ltd_case_study_photo.png)
Location: Kendal Power Station, Kendal, South Africa
Water Conservation in Dry-Cooled Coal-Fired Thermal Power Plants: Kendal Power Station
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 22](https://www.un.org/sites/un2.un.org/files/2020/11/region_of_madrid_water_company_-_canal_de_isabel_ii_case_study_photo.png)
Location: Region of Madrid, Spain
Promoting Sustainable Growth and Self-Production of Energy through the Water Sector, as Key Elements for the Recovery after the COVID-19 Crisis
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 1](https://www.un.org/sites/un2.un.org/files/2021/03/case_study_south_africa_from_iaea_clew_photo1.jpg)
Location: Cape Town, South Africa
Climate, Land, Energy and Water Strategies in the City of Cape Town
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 2](https://www.un.org/sites/un2.un.org/files/2021/03/case_study_syria_from_iaea_clew_photo1.jpg)
Location: Syrian Arab Republic
The Impact of Environment, Water Resources and Land Protection on the Development of Syrian Energy Supply Strategy
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![case study 2](https://www.un.org/sites/un2.un.org/files/2021/03/case_study_mauritius_from_iaea_clew_photo.jpg)
Location: Mauritius
CLEW Case Study: Assessing Interdependencies among Energy, Water, Land-Use and Climate Change in Mauritius
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![Paranaíba River Basin, Brazil](https://www.un.org/sites/un2.un.org/files/2021/03/case_study_brazil_from_iaea_clew_photo.jpg)
Location: Paranaíba River Basin, Brazil
Impacts of Biofuel Production on Water Resources: Case Study of Ethanol Production from Sugarcane in the Paranaíba Hydrographic Basin
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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![Guatemala](https://www.un.org/sites/un2.un.org/files/2021/03/case_study_page_photo_sdg13-asazgua.jpg)
Location: Guatemala
Activities by the Guatemala Sugar Agroindustry supporting the Sustainable Development Goal 13 (SDG 13) of the United Nations 2030 Agenda for Sustainable Development
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
![SDG 7](https://www.un.org/sites/un2.un.org/files/sdg7_1.png)
![SDG 6](https://www.un.org/sites/un2.un.org/files/screenshot_2020-08-17_at_14.17.38.png)
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