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TrueLoad User Guide
The complete walkthrough: setting up a project, requesting utility data, entering new load, and producing the report you hand to the AHJ.
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Guides, code references, and independent research for contractors, inspectors, and homeowners working through service capacity. Free to use, no account required.
How to use TrueLoad itself — setup, utility data, and producing a report.
The complete walkthrough: setting up a project, requesting utility data, entering new load, and producing the report you hand to the AHJ.
What the code actually requires — the primary sources themselves, plus plain-language explanations of them.
The code itself, readable in full at no cost. NFPA publishes every edition of NFPA 70 for free online viewing. Article 220.87 is the section TrueLoad implements.
A two-page plain-language guide: what 220.87 permits, how a measured-demand calculation differs from the traditional method, and the LBNL research behind it. Written for contractors, homeowners and inspectors alike.
Getting interval data out of a utility, and knowing what you are looking at once you have it.
How the customer-initiated download works, and which utilities have been certified to provide it.
The industry-standard format for utility usage data. If your utility offers "Download My Data", this is what you are getting and what it contains.
Independent work on panel capacity, electrification, and what upgrades actually cost.
ACEEE study quantifying how much of the existing housing stock is genuinely capacity-constrained versus how much only appears to be under a worst-case calculation.
A survey of the options available when a panel looks undersized on paper — including establishing actual measured demand before assuming an upgrade is required.
US Department of Energy overview of the panel-constraint problem and the research program addressing it. Good orientation if you are new to the topic.
LBNL technical brief on how service panels have historically been sized, and why the assumptions behind that sizing no longer match how homes actually use electricity.
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Turn a year of utility interval data into an AHJ-ready 220.87 report.