Solar Technology & Policy

Solar and clean-energy technology, research, markets and policy explainers.

A passenger aircraft representing sustainable aviation fuel

Sustainable Aviation Fuel: What It Is and Where It Fits

Reviewed August 27, 2026. Sustainable aviation fuel is a category with multiple pathways and widely varying lifecycle results. This article does not describe SAF as carbon-neutral or treat every claimed feedstock as equally sustainable. Sustainable aviation fuel, or SAF, is a non-fossil aviation fuel intended to reduce lifecycle greenhouse-gas emissions compared with conventional jet fuel.

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A person in a black shirt and jeans, wearing yellow gloves, is standing on a terracotta tile roof and carefully holding a square solar panel. They are in the process of installing it on the upper-story window of a two-story stucco house.

Solar Windows: How Transparent Solar Technology Works

Reviewed August 2, 2026. Separated research-stage transparent photovoltaics from products a homeowner can commonly buy today. Explore the related ConvertGreen topic hub and read our review methodology. The Dawn of a Transparent Energy Revolution In the quest for sustainable energy solutions, solar windows are emerging as a groundbreaking technology. Imagine windows that not only provide

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