Become a sponsor to WILLIAM COLLIS

Most discussions about home energy storage and HVAC efficiency rely on models, manufacturer claims, or forum folklore. My work doesn't.

I'm an engineer conducting open-source, measurement-based research on residential energy systems—replacing assumptions with data wherever possible. Over the past four years, I've published rigorous technical analyses on LiFePO₄ battery performance, residential HVAC efficiency, and whole-home energy optimization, all with complete transparency: raw datasets, replication protocols, and explicit boundaries on what the findings do and don't claim.

What I'm Building

Battery Technology Research – Challenging conventional wisdom with data. My 73-day study of parallel LiFePO₄ banks demonstrated what I call "architectural immunity"—mixed-brand cells achieving monolithic behavior in low-resistance parallel topologies (k=1.003 Peukert, 99.3% capacity validation). Read the full analysis →

HVAC Performance Baselines – Four years of weather-normalized utility data, runtime analysis, and equipment monitoring from a modern Connecticut home. The findings surprised me: stable performance, minimal efficiency drift, and evidence that many modern homes are already operating near their practical ceiling. See the study →

Open-Source Monitoring Tools – Home Assistant integrations for real-time diagnostics, zone balance analysis, and statistical process control. Currently developing automated utility tracking and HVAC performance dashboards with version 1.3.0 released in January 2026.

The Approach

My work follows a simple principle: Measure first. Normalize honestly. Then decide.

Every project includes:

• Complete raw data (CSV files, full datasets)
• Reproducible methodologies following ASHRAE guidelines
• Explicit boundaries: what was tested, what wasn't, where uncertainty begins
• Code and analysis scripts for independent verification
• Publication-quality documentation

This isn't just about publishing results—it's about creating the technical references I wish had existed when I started.

Why Sponsor?

All my research is freely available. Sponsorship helps me:

• Expand instrumentation: Additional sensors, monitoring equipment, and test infrastructure
• Dedicate time to analysis: More frequent reports, deeper investigations, extended monitoring periods
• Develop tools: Open-source Home Assistant integrations, automated analysis scripts, data visualization dashboards
• Publish findings: Substack articles, GitHub documentation, reproducible protocols
• Share faster: Reduce the gap between measurement and publication

SPONSORSHIP TIERS

$5/month - Coffee Supporter

Help fund continuous monitoring & data collection

$15/month - Equipment Fund

Support expansion of instrumentation and sensors

$50/month - Research Partner

Priority feature requests & early access to findings

$100/month - Technical Advisor

Direct consultation on replication setups

What You're Supporting

When you sponsor this work, you're investing in:

✓ Evidence over assumptions – Challenging "everyone knows" claims with actual measurements
✓ Transparency over proprietary data – Full datasets, not cherry-picked results
✓ Replication over anecdotes – Protocols you can validate yourself
✓ Honest boundaries – Clear about what was measured and what remains uncertain

DIY energy storage and home optimization sit at an uncomfortable intersection of serious electrical risk, incomplete manufacturer data, and forum folklore passed down as rules. My goal is to provide measured, validated reference points that help others make informed decisions—and avoid expensive mistakes.

Recent Publications

📊 What 73 Days of Data Taught Me About Parallel LiFePO₄ Battery Banks (Jan 2026)

🏠 A Measured Look at HVAC Performance in a Modern Connecticut Home (Jan 2026)

💾 LiFePO4 Battery Banks Repository – Full technical reports, raw voltage logs, analysis code

🔧 Residential HVAC Performance Baseline – 4 years of utility data, runtime analysis, normalization methodology

If you want to critique the methodology, replicate the setup, or explore edge cases I haven't reached, I genuinely welcome it.