Ali Hajimiri has spent a decade researching how to put solar panels in space...

CNN Climate 3 years ago

Ali Hajimiri has spent a decade researching how to put solar panels in space and beam the energy down to Earth. This year, the Caltech electrical engineering professor and his team took a step toward making space-based solar a reality. They launched Maple, a 30-centimeter-long space solar prototype equipped with flexible, lightweight transmitters. The aim was to harvest energy from the sun and transfer it wirelessly in space, which they did, managing to light up a pair of LEDs. The amount of energy they detected was too small to be useful, but they had succeeded in wirelessly beaming down power from space. At its heart, space-based solar is a fairly straightforward concept. Humans could harness the enormous power of the sun in space, where it's available constantly — unaffected by bad weather, cloud cover, nighttime or the seasons — and beam it to Earth. Read more about it at the link in our bio. 📸: Space Solar

layersDaily Sustainability Digest

Published about 6 hours ago



Across Europe, sustainable construction is entering a phase of measurable transformation supported by rigorous whole life carbon assessment and life cycle cost analysis.

In Oslo, the retrofit of a 1930s landmark using autoclaved aerated concrete demonstrates how low embodied carbon materials can deliver both preservation and performance, reinforcing circular economy in construction principles while maintaining heritage value. Ytong’s sustainable retrofit in Oslo exemplifies this evolution in practice.

Manchester’s commitment to circular heat networks marks a strategic pivot toward low carbon design at an urban scale, echoing broader ambitions for net zero whole life carbon and carbon neutral construction. This aligns with broader national initiatives such as those described in Manchester’s pioneering city‑wide energy systems.

Innovation in AI‑driven project modelling is accelerating sustainable building design through more precise embodied carbon evaluation and lifecycle assessment, improving the accuracy of whole life carbon reporting under tightening UK and European disclosure requirements. The regulatory landscape is intensifying as policymakers address the environmental impact of construction with updated guidance covering recyclability, fire performance, and environmental product declarations (EPDs), as evidenced by new fire‑rated junction guidance supporting construction safety.

Major clients adopting sustainable building practices on flagship regeneration projects such as Battersea Power Station illustrate how sustainable material specification and eco‑design for buildings now define prestige development. The convergence of green construction, low‑impact construction techniques, and sustainable urban development underlines a maturing circular economy where energy‑efficient buildings and low carbon building methods deliver resilience to climate‑driven stresses. The industry’s trajectory confirms that sustainable design and decarbonising the built environment are no longer aspirational but essential criteria for long‑term building lifecycle performance and genuine net zero carbon progress.

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