It's true because people didn't know that water can be used to generate hydroelectricity.

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Introduction:
With respect to electricity, water has been considered a potential resource until a few years back. This statement is true, and in this response, we will explain the reasons behind it.

Electricity Generation:
1. Hydroelectric Power: Water has been used as a potential resource for electricity generation through hydroelectric power plants.
2. Dams and Reservoirs: Large-scale dams and reservoirs are built to store water, which is then released through turbines to generate electricity.
3. Water Turbines: Water flowing in rivers or streams can be harnessed to turn turbines and generate electricity.

Advantages of Water as a Potential Resource:
1. Renewable: Water is a renewable resource, making it a sustainable option for generating electricity.
2. Abundance: Water is widely available in the form of rivers, lakes, and oceans, making it a reliable resource for electricity generation.
3. Cost-effective: Hydroelectric power plants have relatively lower operational and maintenance costs compared to other forms of power generation.
4. Environmentally Friendly: Water-based power generation does not produce harmful emissions, contributing to a cleaner and greener environment.

Recent Developments:
1. Technological Advancements: In recent years, there have been significant advancements in renewable energy technologies, such as solar and wind power.
2. Diversification of Energy Sources: Governments and organizations worldwide are emphasizing the need to diversify energy sources to reduce reliance on a single resource.
3. Environmental Concerns: While hydroelectric power is considered clean and renewable, it has also raised concerns about its environmental impact, including the displacement of wildlife and alteration of river ecosystems.

Conclusion:
Water has been a potential resource for electricity generation until a few years back. It has been widely used in hydroelectric power plants, dams, and water turbines. However, recent developments in renewable energy technologies and the need for diversification of energy sources have shifted the focus away from solely relying on water for electricity generation. Nonetheless, water remains an important resource for sustainable energy production, and its potential should not be overlooked.