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Mac as Data Center

Four Macs vs Data Centers + 20 Years

When we forecast AI data-center electricity demand 10 or 20 years into the future, I think we should be very careful about simply extrapolating today’s architecture. Think about Mainframe to Micro power curve!

August 27, 2026· By jmay@greenplex.ai
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risk analysis for CEA
GreenOS

Risk Analysis for Indoor Agriculture

A borrower who can quantify the bad year has, by demonstration, thought harder than one who can't. If your risk assessment can't move a number in your pro-forma, it isn't finished.

August 1, 2026· By jmay@greenplex.ai
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ebitda bar chare
GreenOS

EBITDA from a CEA Perspective

The better questions are not "What is EBITDA?" but: What does EBITDA look like after debt service? What does sustaining capex cost? How many operating cycles can working capital sustain if EBITDA compresses suddenly?

August 1, 2026· By jmay@greenplex.ai
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The explosively expanding AI-related attack surface
AI InfoSec

Understanding the looming AI Infosec Crisis - Is it too late?

Anthropic's Carlini ends his talk with a line worth taking seriously: “These next couple of months will really be some of the most important couple of months for security.” He is not being dramatic. He is pointing out the shape of our impending doom while also saying... let's not give up just yet.

April 22, 2026· By steve@plexgraf.com
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llm-eval-loops
AI Research

Inference-time AI Evaluation Methods: Loop through validation code, judge models and human monitors

Production AI systems need layered test-time evaluation driven by model confidence scores. Code-based business rules validate every response. Model judge panels catch edge cases when confidence dips. And for the highest-stakes scenarios, a virtual situation room of human experts and peer reviewers provides the ultimate quality gate. The key: not every answer needs the same scrutiny. Let confidence drive the escalation.

March 7, 2026· By steve@plexgraf.com
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From Citizens (a data center RFP)For Citizens (a green campus)

Our mission is to give communities a fair deal when data centers come to town and become a permanent aspect of the local landscape.

GreenPlex is a green living, playing, working campus built to answer the needs of the Citizens, a campus the community specifies. Organizationally, GreenPlex is comprised of formal partnerships between universities, communities, facilities developers, virtual energy providers, collaboration engineers and AI experts.

Let’s collaborate! Please get in touch:

jmay@greenplex.aiJohn May · 703-624-2719
The question isn’t whether communities should say yes or no to data centers. The question is why wait for data center developers to tell us what we’re getting.
The GreenPlex campus seen across the lake — a maker space and lab, a controlled-environment produce farm, green data centers on the ridge, and a community and business center