Wastewater Plants Are Sitting on Energy They Don't Fully Use

By Siam Sukkhee Trading Co., Ltd — 2026-09-30 — Waste360 (recycling/scrap)

I read a report last week that made me stop and think about what waste actually means. Someone's running a wastewater treatment plant. They're already breaking down organic matter. And they're sitting on biogas they're barely using.

The American Biogas Council released its first proper assessment of anaerobic digestion at U.S. wastewater facilities in over a decade. What they found is straightforward: plants could be doing far more work than they currently do.

Here's the setup. Anaerobic digestion is just the process of breaking down organic waste—sewage sludge, food scraps, processing waste—without oxygen. That decomposition produces biogas. You can burn it for heat, electricity, or refine it into natural gas. The infrastructure exists at most treatment facilities already.

But here's where it gets interesting.

Today, 139 wastewater facilities accept what they call co-digestion—organic material from outside sources. Someone brings food processing waste, post-consumer food scraps, fats and oils and grease. The plant drops it into an existing digester with their sewage sludge. More feedstock means more biogas. More biogas means you're actually doing something with the 24 million tons of food waste that currently gets landfilled every year.

That number stuck with me. Twenty-four million tons. Not in one state. Not in one region. Annually. And much of it could be diverted to facilities that already have the equipment to handle it.

The report found the potential to capture an additional 70 billion cubic feet of biogas annually from U.S. wastewater plants if they expanded these practices properly. To put that in proportion, that would be enough energy to power roughly 1.9 million homes.

I should clarify—not every wastewater plant is going to become an energy producer overnight. Some lack the infrastructure. Some lack the regulatory pathway. Some lack the incentive structure to change their operations. Actually, that's the real story. The capacity exists. The business case doesn't always.

But the opportunity is there. A facility in your area, or in our area, might be handling food waste that should be generating value instead of becoming landfill.

Source: "The report identifies the potential to capture an additional 70 billion cubic feet annually, bringing the total to nearly 172 billion cubic feet." — EIN Presswire

Tags: zinc trading Southeast Asia