Calwarden

Home Energy Savings Planner

Plan home energy upgrades from current usage, upgrade cost, savings, incentives, and payback.

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Workflow planner

Baseline usage

Set current usage and utility rate.

kWh
$/kWh

Live output

Energy savings plan

Monthly Savings
$45.78
Net Upgrade Cost
$3,300.00
Payback
72.08387942332897

Home energy savings plan

$46 estimated monthly savings with a 72.1 month payback.

Baseline
  • 950 kWh/month
  • $171 current estimated electric cost
  • 18% usage reduction
Upgrade economics
  • Upgrade cost: $4,200
  • Incentives: $900
  • Net cost: $3,300
Checklist
  • Verify rebate eligibility
  • Compare contractor quotes
  • Confirm utility rate and seasonal usage
  • Prioritize safety and code requirements
Next steps
  1. 1Collect 12 months of utility bills
  2. 2Get two quotes
  3. 3Re-run plan with conservative savings
  4. 4Schedule upgrade work

Logic: Monthly savings = usage * rate * reduction + other savings. Payback = net upgrade cost / monthly savings.

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About this Home Energy Savings Planner

Use this workflow to prioritize home energy upgrades by payback and expected monthly savings.

How to use this calculator

  1. Work through each planning step from left to right.
  2. Adjust assumptions until the live artifact matches the scenario you want to save.
  3. Sign in and save the workflow artifact if you want it synced to your Calwarden account.

Key assumptions

  • All values are user-entered planning assumptions.
  • Calculations run locally in the browser.
  • Saved artifacts are stored only when a signed-in user explicitly saves them.

Accuracy and testing

Review formula sources, default test cases, assumptions, unit handling, rounding rules, and changelog for this calculator.

View accuracy page

Key Features

  • Multi-step input flow
  • Live planning artifact
  • Account save support for signed-in users

Things to Keep in Mind

This workflow is a planning aid. Validate assumptions, rates, legal/compliance obligations, vendor quotes, and local policies before acting.