Green Energy ROI Hub
Reference library 4 in-depth guides

Solar guides.

Long-form, source-cited explainers on the parts of residential solar that a calculator can't fit into a single number. Written for an intelligent reader who isn't a domain expert.

12-min read

The 30% Federal Solar Tax Credit, Explained

A line-by-line reading of IRS §25D — what qualifies, the carryforward rules, the AMT interaction, and the common traps that disqualify claims.

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14-min read

Net Metering, Net Billing, and the End of 1-for-1

How utilities compensate rooftop solar exports — and why California's NEM 3.0 transition is a leading indicator for the rest of the country.

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10-min read

How Residential Solar Systems Are Actually Sized

Annual kWh, peak sun hours, performance ratio, and why "more panels" is not always the right answer — even in sunny markets.

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11-min read

Reading Your Utility Bill: Tiers, TOU, and Demand Charges

A practical decoder for residential rate structures, and how each one changes the economics of going solar.

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Independent · Source-cited

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