Gigawatt Coffee Roasters: Five Air-Roasted Coffees, Compared

The 5 coffees at a glance

The five coffees run from light to dark. The roast labels are the ones Gigawatt’s own FAQ uses to sort its range.

Roast labels from Gigawatt’s FAQ (read 9 November 2026), which sorts its coffees into light, medium-light, medium, medium-dark and dark. Gigawatt says it also prints a five-diamond roast scale on every bag; the scale itself was not on any product page we could capture.

Every entry is Gigawatt’s own, from its product pages: Static Resistor read live on 9 November 2026 and the Organic Honduran’s process read live on 10 November 2026; everything else from archived copies of the same pages dated July 2025 to March 2026, because the store limited our requests. Tasting notes describe how Gigawatt says each coffee tastes; Gigawatt says it adds no flavorings.

Who Gigawatt is

Gigawatt Coffee Roasters is run by Eli and Jen Coleman, a husband-and-wife team, from a two-unit roastery in Bensenville, Illinois, near O’Hare. By its own account it began with home roasting in 2019, launched in February 2020, and moved to farmers markets when the pandemic closed the café and office plans it had started with. It now roasts five days a week, has a staff of seven, and roasts on fluid-bed air roasters, including a Coffee Crafters Valenta 18.

You meet it mostly at markets. It is on the Elmhurst Farmers Market’s 2026 vendor list and the La Grange farmers market vendor page, and Google reviewers mention buying at the Frankfort and Schaumburg markets. Online it sells nationwide. Gigawatt says it writes the roast date on every bag by hand, and a roast date is the single most useful freshness signal a bag can carry.

On Google, Gigawatt holds a 5.0 rating from 469 reviews (9 November 2026). Reviewers mostly mention the Kite & Key blend, freshness and the handwritten notes that come with orders.

Air roasting: what it is, and what it does not settle

A drum roaster tumbles beans in a rotating drum, heated partly by contact with the hot metal and partly by hot air. A fluid-bed roaster blows hot air up through the beans hard enough to lift and stir them, so nearly all of the heat arrives by convection. Coffee roasting texts, including Barista Hustle and Perfect Daily Grind, describe the difference in those terms. The same airflow lifts away chaff, the papery skin that comes off the bean as it roasts, and carries it to a collector; roaster patents describe that design.

Gigawatt goes further. It says that because nothing scorches against a hot drum wall and the chaff is blown away, its coffee is never bitter, and that only about 1% of roasters work this way. Those are Gigawatt’s claims, not findings. We found no independent source that measured the 1% figure. Perfect Daily Grind’s comparison of the two methods says the type of roaster does not by itself decide the flavor, and a roaster quoted in its guide to fluid-bed roasters says you still have to raise the heat gently on one to avoid scorching. Baratza describes chaff as flavor-neutral. Bitterness depends at least as much on how dark the coffee is roasted and how it is brewed.

So the fair reading is this. Air roasting is a real and distinct method, and it rules out one cause of harsh flavor, beans scorching on hot metal. Whether a given bag tastes better than a drum-roasted one is a question for the cup, not the machine.

What the published details leave open

Gigawatt documents its single origins well: region, producer, varieties and altitude. Its blends and its decaf say much less. A few points do not line up, and they are worth knowing before you buy:

• Organic Honduran: labelled organic and Fair Trade with no certifying body named on the page, and described as natural process on Gigawatt’s current product page, while a 2025 version of the same page said fully washed, so the process may differ by lot.
• Kite & Key: medium dark in the product heading, medium in the details, and three origins in one paragraph against four in another.
• Static Resistor: the origin is a seasonal selection, so the coffee in your bag can change through the year.
• Cup scores: we found no Coffee Review score or competition result for Gigawatt. One independent blog scored the Organic Honduran 8.8 in 2021, from a sample Gigawatt supplied.