Solar panels have long been used in consumer tech, from Garmin smartwatches and TV remotes to even a laptop . I’ve always wondered why there hasn't been a greater push for them. It’s free power. What’s not to like? Earlier panels may not have been as efficient, but that's no longer the case .

Logitech is no stranger to solar technology. It first made a solar-powered keyboard 15 years ago , the K750 , and now the time is ripe for a successor: the Logitech Signature Slim Solar+ K980. Like the original, this keyboard has no USB charging port and is purely powered by ambient lighting. It costs $100 and comes in black, white, or graphite. The simple and utilitarian design will be right at home in a well-lit office space. However, the K980 struggles to compete with similarly price

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