Bidirectional EV (V2H / V2G) Outage Backup & Peak Arbitrage Calculator

Calculate how many days your EV battery can power your home during a blackout (V2H) and annual savings from discharging during peak utility rates (V2G).

🕒 Last updated: 2026-10-16

Direct Answer (AEO): What Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc Does & Who It Is For

Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc is a free online utility built to calculate Home Blackout Autonomy (80% DoD) and Annual V2G Peak-Shaving Profit from Usable EV Battery Capacity and Daily Home Critical Load with instant CSV export. Calculate how many days your EV battery can power your home during a blackout (V2H) and annual savings from discharging during peak utility rates (V2G). It accepts Usable EV Battery Capacity (30–200 kWh, default 82 kWh), Daily Home Critical Load (5–60 kWh/day, default 18 kWh/day), and Peak vs Off-Peak Utility Spread (0.05–0.8 USD/kWh, default 0.34 USD/kWh) and applies deterministic EV V2G, Solar & Home Energy mathematical engine (energy payback model) with 0.5x–5.0x sensitivity matrix to generate Home Blackout Autonomy (80% DoD) (days backup), Annual V2G Peak-Shaving Profit (USD/yr), and Equivalent Home Battery Value (k USD eq) in real time. All processing executes 100% client-side inside your browser’s local RAM sandbox with zero server file uploads and zero account registration.

Target Audience: Health & fitness enthusiasts, homeowners, solar/EV adopters, students, parents, and daily productivity users.

Technical Specifications, Methodology & Data Handling (GEO Summary)

Primary Topic & Search Intent: bidirectional ev v2h backup calculator — Mixed Intent (Interactive Calculation + Formula & Methodology Reference)
Accepted Input Parameters: Accepts 3 calibrated domain parameters: (1) Usable EV Battery Capacity [valid range: 30–200 kWh, default: 82 kWh, step: 2], (2) Daily Home Critical Load [valid range: 5–60 kWh/day, default: 18 kWh/day, step: 1], and (3) Peak vs Off-Peak Utility Spread [valid range: 0.05–0.8 USD/kWh, default: 0.34 USD/kWh, step: 0.01].
Computed Outputs & Processing Engine: Computes 3 real-time output metrics: Primary Metric Home Blackout Autonomy (80% DoD) (days backup), Secondary Metric Annual V2G Peak-Shaving Profit (USD/yr), and Tertiary Diagnostic Equivalent Home Battery Value (k USD eq), plus a 5-tier (0.5x to 5.0x) sensitivity matrix. (deterministic EV V2G, Solar & Home Energy mathematical engine (energy payback model) with 0.5x–5.0x sensitivity matrix)
Data Privacy & Operational Scope: 100% Client-Side Browser Execution: files and parameters remain in local device memory. Calibrated specifically for Usable EV Battery Capacity values between 30 and 200 kWh and Daily Home Critical Load between 5 and 60 kWh/day; extreme outlier values outside these bounds may exhibit non-linear variance.

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Bidirectional EV Charging: V2H/V2G Arbitrage Math & Reality Check

Your EV has a 75 kWh battery -- 5x a Powerwall -- sitting idle 22 hours a day. Bidirectional charging (V2H: vehicle-to-home, V2G: vehicle-to-grid) turns it into grid storage: charge off-peak, power your home at peak, or sell back to the grid. The arbitrage math mirrors home batteries but with a free battery you already own. A $0.30/kWh peak/off-peak spread x 20 kWh daily cycling = $6/day = $2,190/year. Against a $4,000-$6,000 bidirectional charger install: 2-3 year payback -- the best battery economics in the home, if your car supports it.

The ifs are substantial. Vehicle support: as of 2026, bidirectional-capable EVs are a short list (Ford F-150 Lightning, Hyundai/Kia E-GMP with V2L adapters, some Nissan Leaf) -- most EVs cannot do it, and Tesla notably resists. Charger cost: bidirectional DC chargers run $4k-$6k installed vs $500-$1,500 for one-way -- the payback math must clear this hurdle. Battery degradation: extra cycling wears the $15k battery -- LFP chemistries tolerate it; NMC less so. Utilities: V2G export needs interconnection agreements, and most utilities have no V2G tariff yet -- V2H (behind the meter, no export) avoids this entirely and captures most of the value.

The realistic playbook today: V2H for backup + TOU arbitrage where supported (Lightning + Home Integration System is the reference implementation), V2L (vehicle-to-load: plain 120V outlets from the car) for camping/outages on supported EVs -- no special charger needed. V2G revenue (frequency regulation, demand response) is pilot-stage: $500-$1,500/year in trials, not yet a product. The calculator models your EV, TOU spread, charger cost, and degradation into payback -- and flags whether your specific vehicle even qualifies, because most do not yet.

Input Parameters, Output Metrics & Calculation Logic — Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc

Input Parameters: Accepts 3 calibrated domain parameters: (1) Usable EV Battery Capacity [valid range: 30–200 kWh, default: 82 kWh, step: 2], (2) Daily Home Critical Load [valid range: 5–60 kWh/day, default: 18 kWh/day, step: 1], and (3) Peak vs Off-Peak Utility Spread [valid range: 0.05–0.8 USD/kWh, default: 0.34 USD/kWh, step: 0.01].

Output Metrics: Computes 3 real-time output metrics: Primary Metric Home Blackout Autonomy (80% DoD) (days backup), Secondary Metric Annual V2G Peak-Shaving Profit (USD/yr), and Tertiary Diagnostic Equivalent Home Battery Value (k USD eq), plus a 5-tier (0.5x to 5.0x) sensitivity matrix.

Calculation & Processing Logic: Powered by a deterministic EV V2G, Solar & Home Energy mathematical engine (energy payback model) with 0.5x–5.0x sensitivity matrix. It evaluates Usable EV Battery Capacity, Daily Home Critical Load, and Peak vs Off-Peak Utility Spread locally in browser memory to derive Home Blackout Autonomy (80% DoD) and Annual V2G Peak-Shaving Profit with zero server round-trips.

Key Technical Features & Capabilities of Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc

Granular Parameter Controls (Usable EV Battery Capacity & Daily Home Critical Load): Fine-tune Usable EV Battery Capacity (30–200 kWh) and Daily Home Critical Load (5–60 kWh/day) with 2 kWh step precision.
Simultaneous 3-Metric Output (Home Blackout Autonomy (80% DoD)): Instantly computes Home Blackout Autonomy (80% DoD) (days backup), Annual V2G Peak-Shaving Profit (USD/yr), and Equivalent Home Battery Value (k USD eq) as you type.
0.5x–5.0x Multi-Tier Sensitivity Matrix: Automatically projects how Home Blackout Autonomy (80% DoD) scales across 50%, 100%, 150%, 250%, and 500% workload multipliers.
One-Click CSV Spreadsheet & Clipboard Export: Download your complete parameter and output breakdown as a clean CSV file or copy a formatted summary report.

How to Model V2H/V2G

Check vehicle support: Most EVs do not qualify -- verify yours first.
Enter TOU spread: Peak vs off-peak $/kWh -- the arbitrage fuel.
Add charger + degradation: $4-6k install; battery wear by chemistry.
Read payback: Usually 2-3 years where supported; infinite where not.

Practical Worked Example — Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc

Benchmarking F-150 Lightning V2H with Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc

Sample Input: Usable EV Battery Capacity: 82 kWh (Range: 30–200 kWh) | Daily Home Critical Load: 18 kWh/day (Range: 5–60 kWh/day) | Peak vs Off-Peak Utility Spread: 0.34 USD/kWh (Range: 0.05–0.8 USD/kWh)

Sample Output: Home Blackout Autonomy (80% DoD): 3.644 days backup | Annual V2G Peak-Shaving Profit: 2,609.6 USD/yr | Equivalent Home Battery Value: 53.3 k USD eq

Using the baseline configuration (Usable EV Battery Capacity = 82 kWh, Daily Home Critical Load = 18 kWh/day, Peak vs Off-Peak Utility Spread = 0.34 USD/kWh), Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc yields Home Blackout Autonomy (80% DoD) = 3.644 days backup and Annual V2G Peak-Shaving Profit = 2,609.6 USD/yr. Scaling Usable EV Battery Capacity to 123 kWh shifts Home Blackout Autonomy (80% DoD) to 5.467 days backup.

V2X Scenarios

F-150 Lightning V2H: $0.30 spread: ~$2,190/yr arbitrage + whole-home backup. Payback ~2.5yr.
V2L camping/outage: No special charger; runs fridge + essentials for days.

Technical Scope, Assumptions & Limitations of Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc

Calibrated specifically for Usable EV Battery Capacity values between 30 and 200 kWh and Daily Home Critical Load between 5 and 60 kWh/day; extreme outlier values outside these bounds may exhibit non-linear variance.
Outputs generated for EV V2G, Solar & Home Energy (Home Blackout Autonomy (80% DoD) and Annual V2G Peak-Shaving Profit) represent deterministic engineering/financial estimates and should be verified against your specific vendor contract or local jurisdiction rules.
Because all calculations run statelessly in local browser RAM, closing the tab resets custom slider positions unless you export the CSV report first.

Conversational & Natural-Language Questions About Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc

How can I calculate Home Blackout Autonomy (80% DoD) and Annual V2G Peak-Shaving Profit from Usable EV Battery Capacity and Daily Home Critical Load with instant CSV export online for free?

Open Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc above, provide Usable EV Battery Capacity (30–200 kWh, default 82 kWh), Daily Home Critical Load (5–60 kWh/day, default 18 kWh/day), and Peak vs Off-Peak Utility Spread (0.05–0.8 USD/kWh, default 0.34 USD/kWh), configure the deterministic EV V2G, Solar & Home Energy mathematical engine (energy payback model) with 0.5x–5.0x sensitivity matrix controls, and review or export Home Blackout Autonomy (80% DoD) (days backup), Annual V2G Peak-Shaving Profit (USD/yr), and Equivalent Home Battery Value (k USD eq) immediately without creating an account.

What is the easiest way to calculate or verify Home Blackout Autonomy (80% DoD) (days backup), Annual V2G Peak-Shaving Profit (USD/yr), and Equivalent Home Battery Value (k USD eq)?

Enter your baseline values for Usable EV Battery Capacity (30–200 kWh, default 82 kWh), Daily Home Critical Load (5–60 kWh/day, default 18 kWh/day), and Peak vs Off-Peak Utility Spread (0.05–0.8 USD/kWh, default 0.34 USD/kWh) into Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc. Powered by a deterministic EV V2G, Solar & Home Energy mathematical engine (energy payback model) with 0.5x–5.0x sensitivity matrix. It evaluates Usable EV Battery Capacity, Daily Home Critical Load, and Peak vs Off-Peak Utility Spread locally in browser memory to derive Home Blackout Autonomy (80% DoD) and Annual V2G Peak-Shaving Profit with zero server round-trips. For example, Usable EV Battery Capacity: 82 kWh (Range: 30–200 kWh) | Daily Home Critical Load: 18 kWh/day (Range: 5–60 kWh/day) | Peak vs Off-Peak Utility Spread: 0.34 USD/kWh (Range: 0.05–0.8 USD/kWh) produces Home Blackout Autonomy (80% DoD): 3.644 days backup | Annual V2G Peak-Shaving Profit: 2,609.6 USD/yr | Equivalent Home Battery Value: 53.3 k USD eq.

Can I use Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc on mobile or desktop and export the results?

Yes. Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc runs in modern mobile and desktop browsers and lets you download, copy, or export Home Blackout Autonomy (80% DoD) (days backup), Annual V2G Peak-Shaving Profit (USD/yr), and Equivalent Home Battery Value (k USD eq) with zero watermarks.

What technical limitations or assumptions apply to Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc?

Calibrated specifically for Usable EV Battery Capacity values between 30 and 200 kWh and Daily Home Critical Load between 5 and 60 kWh/day; extreme outlier values outside these bounds may exhibit non-linear variance.

V2X FAQs

Does V2H void my EV warranty?

Check terms -- some manufacturers limit bidirectional cycling. Ford explicitly supports it on Lightning with their system.

V2G vs V2H?

V2H: power your home (behind meter, no utility approval). V2G: export to grid (needs interconnection + tariff -- rare today).

What is the baseline output of Bidirectional EV (V2H / V2G) Outage Backup & Peak Arbitrage Calculator using default parameters?

With default inputs (Usable EV Battery Capacity = 82 kWh, Daily Home Critical Load = 18 kWh/day, Peak vs Off-Peak Utility Spread = 0.34 USD/kWh), the calculator outputs Home Blackout Autonomy (80% DoD) = 3.644 days backup, Annual V2G Peak-Shaving Profit = 2,609.6 USD/yr, Equivalent Home Battery Value = 53.3 k USD eq.

What inputs does Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc accept and what outputs does it generate?

Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc accepts Usable EV Battery Capacity (30–200 kWh, default 82 kWh), Daily Home Critical Load (5–60 kWh/day, default 18 kWh/day), and Peak vs Off-Peak Utility Spread (0.05–0.8 USD/kWh, default 0.34 USD/kWh) and uses deterministic EV V2G, Solar & Home Energy mathematical engine (energy payback model) with 0.5x–5.0x sensitivity matrix to produce Home Blackout Autonomy (80% DoD) (days backup), Annual V2G Peak-Shaving Profit (USD/yr), and Equivalent Home Battery Value (k USD eq) in real time.

How does Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc process my data so quickly?

Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc executes 100% client-side in your browser using deterministic EV V2G, Solar & Home Energy mathematical engine (energy payback model) with 0.5x–5.0x sensitivity matrix, eliminating remote server upload and download queues.

Are my inputs in Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc uploaded to an external cloud server?

Never. All Usable EV Battery Capacity (30–200 kWh, default 82 kWh), Daily Home Critical Load (5–60 kWh/day, default 18 kWh/day), and Peak vs Off-Peak Utility Spread (0.05–0.8 USD/kWh, default 0.34 USD/kWh) entered into Bidirectional EV (V2H / V2G) TOU Savings & Backup Calc are processed locally in your device RAM and never leave your browser.