Hydroelectricity

How does hydroelectricity work?

All streams and rivers flow downhill. Before the water flows down the hill, it has potential energy because of its height.

Hydropower systems convert this potential energy into kinetic energy in a turbine, which drives a generator to produce electricity. The greater the height and the more water there is flowing through the turbine, the more electricity generated.

The amount of electricity a system generates also depends on how efficiently it converts the moving water's power into electrical energy.

Hydroelectricity systems are also known as hydro systems, hydro turbines, or micro-hydro systems.

Benefits of hydroelectricity

There are lots of benefits to installing a hydroelectricity system.

• 24/7 operation. A hydroelectricity system can generate electricity 24 hours a day, often generating all or more of your electricity needs.
• Cheap heating and hot water. Excess electricity generated by your hydroelectricity system could heat your home and hot water.
• An affordable option for off-grid homes. Hydroelectricity schemes are one of the most reliable alternatives to mains supply for isolated properties. Installing a hydroelectricity system can be expensive but may still cost less than paying to connect to the grid.
• Reduce your carbon footprint. Hydroelectricity is green renewable energy and doesn’t release harmful carbon dioxide or other pollutants.

Maintenance of your hydroelectricity system

Once installed, most hydroelectricity systems last 40-50 years or longer if well maintained. Running and maintenance costs are low.

Screening water intake minimises the risk of damage caused by debris carried downstream during floods.