Pyramid lenses catch light from any angle to boost solar cell efficiency

There’s still room for improvement for solar cells. Stanford engineers have now developed pyramid-shaped lenses that focus sunlight from any angle onto a solar cell, keeping it collecting power from sunrise to sunset.

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Triple-layer bacterial biobattery produces electricity for weeks

Electricity-producing bacteria could be an intriguing renewable energy source. Engineers have now developed a biobattery that contains three layers of different bacteria species, which together take in sunlight and produce electricity.

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Fast-deploying solar/hydrogen nanogrid wheels emergency power off-grid

Sesame Solar announced this week what it calls the world's first 100-percent renewable mobile nanogrid. Powered by a wing-like solar panel spread and green hydrogen, the modular nanogrid brings weeks of autonomous electricity where it's most needed.

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China tests world-first full-function space solar verification tower

In many ways, space is the perfect place for a solar energy array. In other ways, it poses massive technical challenges. China's Xidian University has begun testing the full range of space solar functions with a purpose-built 75-meter tower facility.

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Researchers run a gas turbine on pure hydrogen in world first

A Norwegian team has claimed a world-first, running a gas turbine on 100 percent hydrogen. The modifications made to the turbine, fuel systems and the natural gas infrastructure, could be used to convert other turbines to zero emissions.

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Quantum well solar cell clocks world record efficiency of almost 40%

Researchers at the National Renewable Energy Laboratory have broken the world record for solar cell efficiency. Reaching almost 40 percent, the new device boasts the highest efficiency recorded for any type of solar cell in real-world conditions.

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Straight coils for twisty reactors give new shape to nuclear fusion

While stellarator fusion reactors have conventionally featured irregularly shaped magnetic coils, scientists have now developed simpler and straighter versions they say can offer some important benefits.

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US DoD greenlights mobile nuclear microreactor pilot in Idaho

The US Department of Defense has announced that its Strategic Capabilities Office will go ahead with its plan to build and test a small nuclear reactor capable of being moved, and delivering between 1 - 5 MW of power for a minimum of three years.

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US Navy wirelessly beams 1.6 kW of power a kilometer using microwaves

In what it describes as the most significant demonstration of its kind in half a century, the US Naval Research Laboratory (NRL) beamed 1.6 kW of power over a kilometer (3,280 ft) using a microwave beam at the US Army Research Field in Maryland.

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Breakthrough TPV cell makes more power from heat than a steam turbine

MIT says its new thermophotovoltaic heat engine can harvest more energy from heat than the average steam turbine, at a fraction of the cost and using no moving parts. Huge implications for future power stations, as well as grid-level energy storage.

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