GLASSWATER

Anguilla rostrata · American eel

Bring the eel home.

Building a domestic American eel industry.

Explore Move your light

Current supply chain

7,000 miles

U.S. harvest → Export → Grow-out → Process → Import → U.S. market

Juvenile American eels leave the United States alive and come back as finished product.

The Glasswater model

Build the industry here.

River → Glasswater → Market

American eel raised to market size in the United States, in controlled systems, and sold fresh.

Anguilla rostrata

The American eel

Born
Sargasso Sea
Range
Greenland to Venezuela
Freshwater phase
Years to decades
Reproduction
One of the hardest unsolved problems in aquaculture
Life cycle of the American eel
  1. EggSargasso Sea
  2. LeptocephalusOpen ocean
  3. Glass eelCoast
  4. Yellow eelRivers
  5. Silver eelReturn to sea
  6. SpawningNot yet observed

The farm

Built on land.

American eel raised indoors in recirculating freshwater systems.

Recirculating water loop CONTROLLED ENVIRONMENT RECIRCULATING WATER DOMESTIC GROW-OUT

Infrastructure

Compute makes heat.
Eels need it.

Eel farming needs water held near 25 °C. Data centers reject low-grade heat all day and pay to get rid of it. Glasswater is evaluating colocated facilities that recover that heat through an isolated exchanger.

Precedent
Eel aquaculture on data-center heat, Hokkaido, since 2021.
Status
Under evaluation for future facilities.
Data center heat to eel farm through an isolated heat exchanger DATA CENTER WARM COOLING LOOP · 30–60 °C HEAT EXCHANGERtwo loops, no shared water FARM THERMAL LOOP · 25 °C RAS GROW-OUT · ANGUILLA ROSTRATA

The moonshot

Close the lifecycle.

Grow-out is the first step. The long-term goal is closed-cycle American eel aquaculture. No one has done it.

Breed → Hatch → Grow → Harvest → Repeat

Follow

Follow the first harvest.

A few updates a year.