Gravel Energy Storage System Funded by Bill Gates

The inventor, Aaron Fyke, says his gravel-energy storage system is more efficient and 40% cheaper than pumped hydro, and can be installed virtually anywhere...

31% Efficient Stirling Engines Used to Convert 1.5MW of Arizona Solar Power

Stirling engines are known to mankind for about 200 years but they are not so widely used today, except maybe for the pacemakers and long-distance robotic spacecrafts. This will soon change as 60 stirling engines will be used in Phoenix, Arizona, to harvest solar power which will be converted into electricity.

How to Produce Hydrogen From an Aluminum Soda Can and Water

Here's how you can produce hydrogen to power cars, homes, or even toys. Hydrogen is the cleanest energy carrier in the universe, and is...

How to Build a DIY Toy Wind Turbine for Your Kids

This fun DIY project is easy enough to make with kids, and is a great way to get them excited about renewable energy. It...

Mechanical Battery – Flywheel-Powered 90% Efficient Energy Storage

We have been so focused on chemical storage systems lately, that some us forget other old, seemingly more efficient, mechanical batteries. Such a battery is the flywheel. Several successful experiments have been carried out in the last 50 years, and the flywheel's applications ranged from acting as a UPS for a hospital to putting an entire train to movement and then to cruise speed, only by its power.

A Step Ahead For Zinc Oxide Piezoelectrics: Over 20 Times Power Improvement

Piezoelectrics are a class of materials that, if applied a mechanical force, exert an electric current on the sides. You may already have knowledge about this, but researchers are studying how to take piezoelectric materials to the next step.

New Hyundai Sonata Hybrid Goes 1,300km a Year on Its Solar Panel Alone

In the old times, there were Priuses. Now, it's Hyundai. They just launched their Sonata Hybrid and it has a solar roof charging...

The global transition to clean energy – explained in 12 charts

A report released by Renewable Energy Policy Network for the 21st Century (REN21) goes into that question in considerable detail. The Renewables Global Status...

Spin This “Free Electric” Pedal-Powered Device for 1hr and Get 24h of Free Electricity

Did you know that almost half of the world's population do not have access to a reliable supply of energy, with many having no...

Estream, a portable water turbine to power electronic devices

Estream is the latest technology that provides portable power for electronic devices. It is hydro-turbine that uses the force of flowing river streams. Staying connected...