Clean-energy FAQ

Straight answers to the questions that come up most — legitimate science only, debunked claims left out.

Frequently asked questions

What's the difference between 'renewable' and 'clean' energy?

Renewable means the source naturally replenishes (sun, wind, water). Clean (or low-carbon) means little or no carbon at generation. All renewables are clean, but not all clean energy is renewable — nuclear is clean and firm but not renewable.

Can't we just run everything on solar and wind?

They're essential and cheap, but variable — they produce when the weather allows. To keep the grid reliable, they're paired with storage and clean, firm power for the times the sun isn't shining and the wind isn't blowing.

Is hydrogen an energy source?

No — it's an energy carrier. There are no natural hydrogen wells to tap at scale; you make hydrogen using energy (ideally clean electricity), store it, and convert it back to power or use it as industrial fuel. It's only as clean as the energy used to make it.

Is 'water as fuel' a real thing?

No. Running an engine on water, or 'water fuel cells' that claim to get free energy from water, are pseudoscience and were adjudicated as fraud. Splitting water with clean electricity (electrolysis) or sunlight (artificial photosynthesis) is real — but it consumes energy; it doesn't create it from nothing. This site cites legitimate science only.

How does AI fit into clean energy?

As a tool — for forecasting renewable output and demand, optimizing grid operations and storage, siting projects, and cutting waste. A complex clean grid is data-heavy to run, which is where AI helps, with humans making the consequential decisions.

About the author — George Howell Ward is a long-time clean-energy advocate and early adopter, not a licensed engineer, energy professional, or scientist. He holds a B.S. in Civil Engineering from the University of California, Berkeley, and writes here as an enthusiast and technologist. He attended the National Fuel Cell Research Center seminar at the University of California, Irvine more than a decade ago (mentioned descriptively; not an endorsement by the Center). These guides are educational, draw on legitimate science only, and avoid debunked claims. He is also involved with a nuclear-power-adjacent venture focused on integrating agentic AI into clean-power workflows — an informal, non-fee involvement in his own venture, described here only in general terms.

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