Overview Energy wants to beam energy from space to existing solar farms

Emerging from the shadows of development, Overview Energy has unveiled a groundbreaking vision: harnessing solar power from space to fuel Earth’s energy needs. The startup plans to deploy extensive solar arrays in geosynchronous orbit, approximately 22,000 miles above the planet, where satellites maintain a synchronized position with Earth’s rotation. This innovative approach involves using infrared lasers to beam harvested solar energy back to utility-scale solar farms on the ground. The goal is to enable these farms to deliver power to the grid almost continuously, even during the night. With a funding of $20 million secured so far, part of this investment has been allocated to testing its pioneering power-beaming technology through an airborne demonstration. In a successful trial, a light aircraft transmitted energy via a laser to a ground receiver located three miles away. The venture has attracted significant interest from various investors, including the Aurelia Institute and Lowercarbon Capital, highlighting the growing optimism around space-based energy solutions as launch costs have decreased over the past decade. However, significant challenges remain. Currently, deploying solar panels on Earth is more cost-effective than launching them into orbit. Moreover, the technology for transmitting power wirelessly from space is still in its early stages. Other companies, such as Aetherflux and Emrod, are also exploring similar technologies, each employing different methods—laser and microwave-based transmission, respectively. While microwaves can better penetrate atmospheric conditions like clouds, they require new ground stations, making them less compatible with existing solar infrastructure. Additionally, safety concerns regarding energy beams affecting wildlife and aircraft are being addressed, though the public's acceptance of such technology will be crucial for success. Overview Energy aims to launch a satellite into low Earth orbit by 2028, paving the way for power transmission from geosynchronous orbit by 2030. The ambition is undoubtedly bold, as the company faces not only technical hurdles but also competition from increasingly affordable grid-scale battery solutions and potential advancements in nuclear fusion technology. Nevertheless, the excitement surrounding the project suggests that the dream of space-based solar energy is inching closer to reality.