How to Turn Your Toilet into a Mini Hydroelectric Generator


Converting your toilet into a mini hydroelectric generator can allow you to generate small amounts of electricity from the water used to flush. This green energy project is an innovative way to reduce your environmental impact and harness energy from waste flows. With some simple modifications, your toilet can become a micro renewable energy source.

In this comprehensive guide, I will walk through all the steps needed and considerations involved in toilet power generation.

Overview of Toilet Power Generation

The basic concept behind toilet power is using the flow of water from flushing to spin a small turbine connected to a generator. As the water flows through the toilet tank and bowl, its kinetic energy can be captured and converted to electricity.

Some key points about toilet hydroelectric generation:

The amount of power produced depends on the toilet design, water pressure, and turbine setup. But mini toilet generators can realistically produce up to a few hundred watt-hours per day.

Selecting a Toilet for Hydropower Conversion

The first step is picking an appropriate toilet to modify into a hydroelectric generator.

The best toilets for DIY micro-hydropower are:

You will also need a two-piece toilet with a detachable tank and bowl for easier installation. Measure the tank and bowl dimensions to select a turbine scale.

Turbine and Generator Selection

The turbine and generator are the key components that will harness the wasted hydro energy when you flush.

Some criteria for selecting toilet hydroelectric components:

I recommend looking for a toilet hydroelectric kit that includes a durable plastic turbine and DC generator pre-designed to attach to toilets. DIY turbine fabrication is complex.

Installation of Toilet Hydroelectric System

With the right toilet and hydroelectric components, you can now install your toilet mini generator system:

Tank Turbine Setup

This turbine placement maximizes the water flow energy:

In-Bowl Turbine Placement

The bowl installation harnesses less water flow but is simpler:

Connecting Your Toilet Turbine Generator

Now that your turbine and generator are installed, you need to utilize the electricity generated when flushing:

Monitor your power production over time and consume or store energy as needed.

Maintenance of Toilet Turbine System

Like any hydroelectric system, some periodic maintenance is required:

With proper installation and maintenance, your toilet turbine can provide renewable power for years!

Safety Precautions

When modifying your toilet and dealing with electricity and water, safety should be your top priority:

Following basic electrical and plumbing safety measures is crucial when generating power from your toilet.


Installing a small hydroelectric turbine generator in your toilet can produce green energy from wasted water flows. Although power output is modest, it provides an innovative way to reduce your environmental footprint and utility bills. With proper toilet selection, component sizing, installation, and maintenance, your toilet can double as a novel mini-hydro system!

This concludes the in-depth guide on how to successfully turn your toilet into a micro renewable energy source. Let me know if you have any other questions!