All posts - Undecided with Matt Ferrell

A hand reaching to pickup a traffic camera

The Surprising Ways AI is Actually Helping

By Heather Hunsperger3 days ago

Computers & AI

Tall Cala water heater with black top, white body, orange band, and brass fittings on a blue background.

How This Heat Pump Water Heater is Also a Battery

By Matt Ferrell2 weeks ago

Energy Storage

An Ocean Cleanup barge picking up waste plastic from a river

How Ocean Plastic Isn’t The Problem

By Heather Hunsperger3 weeks ago

Misc

A supercritical CO2 generator

Why China’s Supercritical CO₂ Turbine Matters

By Matt FerrellApril 14, 2026

Energy Production

Someone stood in front of a brightly lit house

The National Grid Is Dead. Here’s What Replaces It.

By Vincent M.April 8, 2026

Energy Production

Vertical Farming

Why This Vertical Farm is 500x More Efficient Than Farming

By Matt FerrellMarch 31, 2026

Misc

Matt Ferrell stood In front of his net zero home looking worried

What I Got Wrong Building My Net Zero Home

By Matt FerrellMarch 24, 2026

Smart Home

Donut Lab's Solid State Battery on a frosted donut

The Mystery Behind Donut Lab’s “Impossible” Battery

By Heather HunspergerMarch 17, 2026

Energy Storage

A solar cell next to a chemical bonds cube

Why Waiting for Perovskite Solar Isn’t Worth It (Solar 3.0)

By Jon OkunMarch 3, 2026

Energy Production

Matt Ferrell stood in front of his house in the snow

Geothermal vs Air Source Heat Pump: Which is Worth It?

By Matt FerrellFebruary 24, 2026

Smart Home

Someone holding a small flywheel in both hands

How 40-Ton Spinning Wheels Are Saving the Power Grid

By Jon OkunFebruary 17, 2026

Energy Storage

Chunk of aluminum next to a battery cell

Why Aluminum Batteries Could Beat Lithium

By Heather HunspergerFebruary 10, 2026

Energy Storage

Matt Ferrell in front of an outside heat pump

Why Everyone Gets Heat Pumps Wrong

By Vincent M.February 3, 2026

Tech

A Bluetti Sodium Battery

Are Sodium Batteries Already Dead?

By Jon OkunJanuary 27, 2026

Energy Storage

A kesterite solar cell held next to a chunk of metal

The Solar Underdog That Could Rival Perovskite

By Heather HunspergerJanuary 20, 2026

Renewable Energy

The Donut All-Solid State Battery

BEST Things I Saw in Vegas at CES 2026

By Matt FerrellJanuary 13, 2026

Tech