SB
Solar Breakeven
🔵 Stable🕐 updated 2026-07-18
🔷 SkillSpec L3
⚙ ships an executable helper
pm-calculators
Model whether solar panels pay for themselves for your roof — net cost after incentives, bill offset with degradation, electricity inflation, the inverter replacement, and the breakeven year, plus the policy risk no calculator controls. Use when asked are solar panels worth it, when does solar break even, check this solar quote's payback claim, or model solar for my bill. Produces the year-by-year table from the script, the breakeven year, the quote-vs-model comparison, and the not-modeled list led by net-metering risk.
What to give it
▸The quote — installed cost, claimed incentives (flagged verify-eligibility — incentives have income, tax-liability, and program caps), the claimed payback for comparison
▸The bill — current monthly, and the offset % the installer claims (their number, tested; 80–95% is typical for a well-sized system)
▸Ownership horizon — moving in 6 years changes everything; solar's value transfer at sale is uncertain and the model says so
▸Financing — cash or loan; a loan adds interest the breakeven must also clear (run [the loan math] separately and add it — the script models the cash case)
✅ The bar it holds itself to
Every skill in this library self-verifies — these are this skill's own quality checks, straight from its definition.
✓Incentives carry the verify-eligibility flag and a zero-incentive sensitivity run
✓The quote's claim is reproduced-or-diffed at its own assumptions
✓Degradation and the inverter replacement are in the model
✓Net-metering risk is stated with its homework, unmodeled and unhidden
✓The breakeven is read against the user's stated ownership horizon
⚠️ What it refuses to do
Do not accept the quote's payback as the baseline — reproduce it or show why it doesn't reproduce
Do not model net metering as eternal — name it as policy, not physics
Do not ignore the inverter — a known cost at a known-ish year is not a surprise
Do not run only the sunny case — the zero-incentive and low-inflation runs are the honesty
Do not moralize either way — solar pencils brilliantly on some roofs and poorly on others; the table decides, not the vibe
Install
npx pm-claude-skills add --agent claude # or codex · cursor · gemini · hermes
# or one-line MCP (every skill, any client):
claude mcp add pm-skills -- npx -y pm-claude-skills-mcpRelated skills
🔌 Embed this skill
Drop this on your blog, docs, or site — it renders a "Run this skill" card:
<div data-pm-skill="solar-breakeven"></div>
<script src="https://mohitagw15856.github.io/pm-claude-skills/embed.js" async></script>💬 Discussion
Solar Breakeven is one of 625 open-source professional AI agent skills — all SkillSpec L3.
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