Back to Glossary HubCategory: Battery & Solar
Energy Arbitrage
ArbitrageThe practice of storing low-cost electricity (or free solar energy) and using or selling it when grid rates are highest.
Full Technical Definition
Energy arbitrage is a financial optimization strategy executed by automated home battery storage systems. The battery charges from solar or from the grid during cheap off-peak hours (or free night hours) and discharges during expensive peak demand periods, avoiding high utility charges.
Real-World Texas Example
A home battery charges from 12:00 AM to 6:00 AM under a 0¢ free-night plan, then powers the home during daytime peak hours (20¢/kWh), saving the homeowner $100+ per month.
Standard Mathematical Formula
Net Arbitrage Profit = (Peak Discharged kWh × Peak Rate) - (Off-Peak Charged kWh × Off-Peak Rate / RTE)Authoritative Source: NREL Storage Arbitrage AnalysisGEO Verified Evidence
Frequently Asked Questions
Can I perform energy arbitrage without solar panels?
Yes! If enrolled in a Time-of-Use or Free-Nights plan, a standalone home battery can charge from grid power at night and discharge during the day.
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