I Reached Out to the Iowa Environmental Council About Bitcoin Mining

Posted on by

There’s a growing conversation happening right now—globally and locally—around Bitcoin mining, energy use, and its impact on communities.

In Iowa, that conversation is no longer theoretical. It’s showing up in public meetings, local zoning discussions, and policy conversations that will shape how towns like Cedar Falls think about energy, infrastructure, and economic development.

Recently, the Iowa Environmental Council published a fact sheet outlining concerns about crypto mining. Documents like this matter. They don’t just inform—they influence how people think, how decisions get made, and how communities respond.

That’s exactly why I decided to reach out.

Not to argue. Not to dismiss concerns. But to do something that feels increasingly rare: slow down, look at the actual data, and ask whether the full picture is being represented.

The IEC states that its work is informed by science and data—and that it listens, learns, and adapts. I take that seriously. So my goal with this email is simple:

To add context where it’s missing.
To challenge assumptions where they may be incomplete.
And to contribute real-world examples—especially from how utilities actually operate—that don’t always make it into high-level summaries.

This isn’t about defending Bitcoin uncritically. It’s about making sure the conversation around it is grounded in how the system actually works—not just how it’s often portrayed.

Below is the note I sent to these people who work there

iecmail@iaenvironment.org, daniel@iaenvironment.org, fowle@iaenvironment.org, green@iaenvironment.org, howe@iaenvironment.org, oster@iaenvironment.org

Hello

Dear Iowa Environmental Council,

I recently reviewed your 2024 crypto mining fact sheet and wanted to share a response to several of the points raised.

On your website, you note that your work is informed by science, data, and stories, and that sometimes you educate and lead; other times, you learn and follow. You also emphasize the importance of listening to others.

I appreciate that framing. My goal in writing is in that same spirit—to contribute additional data, context, and real-world examples that may help strengthen and refine the analysis.

Given the ongoing discussions around crypto mining—both globally and here in Iowa—it is especially important that widely shared materials like this are as accurate and complete as possible. Incomplete or incorrect assumptions can shape public understanding in ways that lead to misinformed conclusions or policy decisions.

This is a complex and evolving topic, and it benefits from incorporating how these systems function in practice, particularly at the utility level.

Below are a few specific responses to points raised in the fact sheet:

1. Electricity Consumption and Grid Strain
It is true that bitcoin mining is energy-intensive. However, the characterization of mining as a constant strain on the grid is incomplete.

Unlike most industrial loads, mining is highly interruptible. Operators can shut down within minutes during periods of high demand, allowing them to function as a flexible demand response resource rather than a fixed burden.

This dynamic was acknowledged at a recent Cedar Falls Utilities discussion, where a utility representative explained that flexible loads like bitcoin mining can lower the average cost of electricity procurement. By consuming power during low-cost periods (when supply is abundant) and curtailing during peak demand, miners can improve overall system efficiency and reduce costs for consumers.

In other words, when structured properly, mining does not simply add demand—it can help smooth demand and reduce price volatility.

2. Energy Sources and Emissions
The fact sheet suggests that increased electricity demand from mining leads to greater fossil fuel use and associated emissions. This reflects a simplified, static view of grid behavior.

Globally, bitcoin mining is estimated to have one of the highest shares of renewable energy usage of any major industry. For example:

  • The Bitcoin Mining Council has estimated the global mining industry’s sustainable energy mix at ~50–60% in recent reports
  • A 2023 analysis from the University of Cambridge Centre for Alternative Finance found a substantial and growing share of mining powered by renewables, particularly hydro, wind, and curtailed energy sources
  • Mining operations are frequently located where energy is stranded, excess, or otherwise underutilized, including wind-heavy regions like parts of the Midwest

Links for reference:

Additionally, mining is economically incentivized to seek out the lowest-cost electricity, which often corresponds to periods of excess renewable generation (e.g., high wind output in Iowa). During periods of high demand—when fossil generation is more likely to set the marginal price—miners can and do curtail usage.

This behavior contrasts with traditional industrial loads, which typically operate continuously regardless of grid conditions.

3. Air Pollution and Public Health
The fact sheet links mining activity to increased air pollution and health risks. However, this conclusion depends heavily on the assumption that mining drives additional fossil fuel generation.

If mining primarily consumes excess or curtailed renewable energy and reduces load during peak fossil generation periods, its net contribution to emissions can be materially different from the scenario described.

As a result, the environmental impact of mining is not uniform—it depends on how it interacts with the grid. Treating all mining load as equivalent to constant fossil-driven demand risks overstating its impact.

4. Noise Concerns
The concern around noise is valid and important at the local level.

However, noise is not unique to crypto mining and is commonly addressed through standard regulatory approaches such as setback requirements, sound limits, and site-specific mitigation measures. These tools are already used effectively for other industrial and agricultural operations.

5. Water Use
The fact sheet raises concerns about water consumption. While some mining facilities use water-based cooling, many modern operations rely on air cooling or closed-loop immersion systems that require minimal ongoing water use.

Water impact varies significantly depending on facility design and should be evaluated on a case-by-case basis rather than assumed to be uniformly high.

Additional Context: Grid Stability, Emissions, and Renewable Development

Because the fact sheet focuses primarily on potential harms, I believe it is also important to include emerging evidence on how bitcoin mining can interact positively with energy systems when deployed in certain ways.

Grid Stability
Bitcoin mining is one of the few large-scale loads that is both flexible and location-agnostic. It can absorb excess generation during periods of oversupply and curtail quickly when demand rises.

This flexibility directly addresses a known challenge with modern grids: balancing intermittent renewable generation with real-time demand. By acting as a controllable load, mining can help stabilize grid operations rather than simply adding to peak demand.

Emissions Reduction (Methane and Wasted Energy Use)
Bitcoin mining is increasingly being used to capture and utilize energy that would otherwise be wasted.

In particular, methane venting and flaring from oil production and landfills represents a significant source of greenhouse gas emissions. Mining can convert this otherwise-released methane into electricity and then into economic value—reducing net emissions in the process.

Support for Renewable Energy Development
Renewable energy projects often face economic challenges due to intermittency, transmission constraints, and periods of oversupply.

Bitcoin mining can act as a “buyer of last resort” for excess or stranded energy—particularly in early project phases or in regions where transmission capacity is limited.

Research has shown that integrating mining into renewable projects can improve project economics, increase revenue, and help bring new solar, wind, and hydro capacity online that might not otherwise be financially viable.

In summary, while the concerns raised in the fact sheet are important, several rely on assumptions that do not fully reflect how bitcoin mining operates in practice—particularly its ability to act as a flexible, price-responsive load that can align with periods of excess energy supply.

I appreciate your work on this topic and hope these additional perspectives are helpful in developing a more complete picture.

Sincerely,
Axel Hoogland

http://www.MyWheelLife.com

Leave a comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.