Estimate complete battery install costs today with confidence. Adjust labor, equipment, permits, taxes, and incentives. See totals, breakdowns, and exports in one place quickly.
Battery equipment cost = Capacity (kWh per unit) × Price per kWh × Units.
Other equipment cost = Inverter + Balance-of-system + Monitoring + Warranty + Misc equipment.
Labor cost = Labor hours × Labor rate.
Pre-tax subtotal = Battery equipment + Other equipment + Labor + Permits + Shipping + Site prep + Travel.
Contingency = Pre-tax subtotal × Contingency %.
Tax base = (Equipment only) or (Subtotal + Contingency), depending on tax mode.
Sales tax = Tax base × Tax %.
Gross total = Subtotal + Contingency + Sales tax.
Net total = max(0, Gross total − Rebates/Incentives).
| Scenario | Capacity (kWh) | Units | Equipment Total | Labor | Fees | Tax | Rebates | Estimated Net Total |
|---|---|---|---|---|---|---|---|---|
| Basic home backup | 10 | 1 | $10,750.00 | $1,530.00 | $950.00 | $1,132.49 | $0.00 | $15,288.59 |
| Two-unit setup | 10 | 2 | $17,250.00 | $2,550.00 | $1,150.00 | $1,793.32 | $1,500.00 | $22,709.82 |
| Premium install | 13.5 | 1 | $15,050.00 | $2,040.00 | $1,350.00 | $1,622.72 | $2,000.00 | $19,906.72 |
This calculator builds a full installed budget by combining battery equipment, supporting hardware, labor, permits, logistics, contingency, taxes, and incentives. You enter capacity per unit, unit count, and a price per kWh to compute battery equipment cost. Add inverter, balance-of-system, monitoring, warranty, and misc items to reflect real invoices. Labor is captured as hours multiplied by an hourly rate, which supports contractor comparisons. It also highlights tax choices that materially impact totals.
Installed projects usually cluster around a few large drivers. Battery equipment often represents the biggest share, followed by labor and supporting hardware. Fees such as permits, shipping, travel, and site preparation can be minor in simple installs but meaningful in complex sites. A contingency of 5% to 10% helps cover change orders, extra conduit, or mounting surprises.
The results panel reports a pre-tax subtotal, then adds contingency and tax to produce a gross total. After incentives are applied, the net total becomes your planning number. Installed cost per kWh divides net total by total battery energy, helping compare different capacities or multiple units. If you choose equipment tax mode, taxes apply only to equipment items, which can match jurisdictions that do not tax labor.
Run several scenarios: a baseline estimate, a higher labor-rate quote, and a higher equipment-price quote. Model a second battery unit to see whether incremental labor is lower than a first install. When rebates are uncertain, run one scenario with a partial rebate and another with zero to understand downside risk. CSV and PDF exports help keep bids aligned.
Update battery price per kWh using vendor quotes, then confirm inverter and balance-of-system costs against a bill of materials. If your site needs electrical upgrades, increase site preparation or misc equipment to capture panels, breakers, or trenching. Review tax assumptions and permitting fees locally. Recheck totals whenever scope changes, and keep notes with the export for auditability.
Include wiring, conduit, breakers, disconnects, enclosures, mounts, combiner components, and any small electrical hardware that is not part of the battery or inverter invoice.
Rules vary by location. If your jurisdiction taxes only materials, choose the equipment tax mode. If your invoice is taxed as a packaged service, choose total mode.
Rebates and incentives reduce the net total dollar-for-dollar after tax and contingency. If your rebate is paid later, treat the net total as a budget target, not cash timing.
Battery projects can change after site inspection. Contingency helps cover added conduit runs, panel upgrades, mounting changes, or permit revisions without rewriting the whole estimate.
Use installed cost per kWh to compare scenarios. It divides net total by total battery energy, showing whether a second unit improves cost efficiency after shared labor and fees.
Yes. After you submit, use the CSV or PDF buttons in the results panel. The export includes your inputs, a detailed cost breakdown, and the final net total.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.