Lenovo’s Latest Green PC: The M58p Eco Ultra Small

by Justin Thomas •

I’ve been testing a new, very efficient PC called the ThinkCentre M58p Eco Ultra Small by Lenovo. This compact PC is the successor to the ThinkCentre M57p Eco. My kilo-o-watt meter is telling me that the M58p consumes only about 35 watts while idle, and 58 watts of power at peak usage. It has a power supply that is 85% …


Biogas: Producing Ultra-Efficient Fuel From Sewage

by Justin Thomas •

We could be generating huge amounts of power from sewage. The process is fairly simple — just ferment sewage to produce a fuel called biogas. Biogas is almost entirely methane, and so is natural gas, so the two are essential interchangeable. The potential to produce biogas is almost entirely overlooked by most countries — except Sweden.


New Zero-Emissions Electric Commuter Bike: The A2B

by Justin Thomas •

A company called Ultra Motor has released a new electric bike called the A2B. This bike looks great – I like the functional, minimalist style.┬áThe A2B is designed for urban or suburban commutes. According to Ultra Motors, the A2B offers unassisted power on demand for up to 20 miles at a cruising speed of 20mph. At that speed it’s still …


Ultra-Bright Solar LED Spotlight

by Justin Thomas •

This durable spotlight comes with its own solar panel, and uses 16 LEDs to produce light. It can run for 12 hours on a single charge. It has a weathertight anodized aluminum housing, and impact-resistant hand-soldered circuitry. The result is a solar light that will perform year after year (many solar lights are meant to be replaced every summer). Available …


Man Retrofits Freezer to Make an Ultra-Efficient Fridge

by Justin Thomas •

An off-grid experimenter in Australia, Tom Chalko, has retrofitted a chest freezer to create a fridge that uses only 100 watt-hours (0.1 kWh) per day! Why a chest freezer? Tom points out that vertical door refrigerators are inherently inefficient. As soon as you open a vertical fridge door the cold air escapes, simply because it is heavier than the warmer …