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Decision · 10 min Analyzer

Energy Upgrade Payback Ritual

Payback in years — net cost after grants divided by what it saves in year one at your energy prices — solar, battery, heat pump, EV, insulation, glazing, LED, the same way.

$17one-time · VAT included · no subscription
Free files
In your download: 8 files
  • Excel workbook · Light · USD
  • START HERE guide (PDF)
  • Excel workbook · Dark Mode
  • Excel workbook · UK · GBP
  • Excel workbook · EUR
  • Excel workbook · AUD
  • Excel workbook · CAD
  • Excel workbook · INR
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✓Download page opens right after payment + links by e-mail. No account.
✓Excel 2016+ / Microsoft 365 · Google Sheets (upload to Drive)
✓Light + Dark · USD GBP EUR AUD CAD INR · PLN pricing — every edition in one download
✓Free updates forever · 14-day refund
Part of the Complete Collection — 119 workbooks, every edition, future releases, $99.
The ritual page

What the file tells you

Every installer's quote comes with its own savings estimate and its own maths. This sheet runs all of them the same way at your energy prices — payback, lifetime return, what it does to cash flow if financed — and tells you which upgrade to do first and which to skip.

01 · verdictPayback — years to recover the cost vs your limit and its lifetime
02 · verdictLifetime — net saving over its life with energy inflation, return on cost
03 · verdictCash — up front after grants, financed per month, net per month
Sheets in the workbook
✓Analyzer · pick an upgrade: payback, three verdicts, three checks
✓Upgrades · one line per upgrade with the quote and the savings
✓Settings · your energy prices, inflation, longest payback you accept, cash available
How it works
1Set your energy prices — electricity, gas, fuel, inflation, your payback limit, cash available
2Add each upgrade as one line — cost, grant, kWh and litres saved, maintenance, lifetime, financing
3Pick an upgrade on Analyzer — payback in years, DO IT / MAYBE / SKIP, the order to do them in
Who it is for

Homeowners with three quotes on the table and a feeling that the salespeople's numbers do not add up.

Dark edition included
Energy Upgrade Payback Ritual — dark edition
Do I need Excel?

Excel 2016+ or Microsoft 365. Or upload the .xlsx to Google Drive — it opens in Sheets with formulas and charts intact.

Can I pay with BLIK?

Yes — BLIK, Przelewy24, any card, Apple Pay and Google Pay. Prices in PLN, EUR or USD; the currency switch is at the top.

Invoice for my company?

Tick “I’m purchasing as a business” at checkout and enter your NIP / VAT ID. The invoice arrives with the download e-mail.

What if it isn’t for me?

14-day refund, no questions. One e-mail to [email protected].

Pairs well with

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