By Peter, Master Electrician | PRO Electric plus HVAC | Battery Backup Power & Critical Panel Installation
BOTTOM LINE UP FRONT (BLUF)
Westover is one of those Arlington neighborhoods where families settle in and stay. The homes have finished basements with playrooms, home offices, and guest suites. The sump pumps in those basements work hard during Northern Virginia’s storm seasons. When the power goes out, the sump pump stops at the exact moment when the basement is most at risk. I have seen too many Westover homeowners deal with a flooded basement after an outage. The fix is straightforward.
This article walks you through why Westover loses power the way it does, what a modern battery backup system actually does for a home like yours, and what the install looks like. If you want the full technical guide, the Northern Virginia cornerstone article goes deeper. If you want to talk about your specific home, the service page has my direct line.
Table of Contents
Why Westover Basements Are at Risk During Outages
Westover sits on soil that holds water during heavy rain events. The finished basements that most homes have are kept dry by sump pumps that run during and after storms. When a thunderstorm knocks out power, the sump pump stops at the exact moment water is pouring into the pit. Even a thirty minute outage during a heavy rain can mean water on the basement floor. Longer outages during multi-day storm events can mean thousands of dollars in flooring, drywall, and contents damage.
What Battery Backup Does for a Westover Sump Pump
The battery system feeds the sump pump circuit from stored energy within milliseconds of the outage. The pump cycles normally throughout the outage as long as the battery has charge. A single thirteen to fifteen kilowatt hour battery typically runs the sump pump plus other critical loads for sixteen to twenty four hours, which covers nearly every outage we see in Arlington. Solar charging adds resilience for multi-day events. The system pays back on the first major storm by avoiding flooding damage.
Critical Load Panel for a Westover Family Home
For Westover family homes, the critical load panel always includes the sump pump as a priority, plus the refrigerator and freezer (often a second freezer in the basement), the main floor lighting, the bedroom lighting, the internet equipment, the gas furnace blower or heat pump fan, and dedicated outlets for the home office and family communications. Some homes have secondary sump pumps or ejector pumps in the basement that we add to the panel as well.
Cost and What You Save
Westover installations run twenty thousand to twenty six thousand for a single-battery system, or thirty thousand to thirty seven thousand for a two-battery configuration. The federal thirty percent tax credit applies. Compare this to a single basement flooding event that can run ten to thirty thousand dollars in damage, and the math becomes obvious. Insurance often does not cover the full cost of flooding from an inoperative sump pump.
Frequently Asked Questions
How does an outage cause my Westover basement to flood?
When the power goes out during a rain event, your sump pump stops cycling. Water continues to flow into the sump pit from the perimeter drain tile. Within thirty to sixty minutes during a heavy rain, the pit can overflow and water reaches the basement floor.
Will battery backup run my sump pump and a backup pump?
Yes. Both primary and secondary sump pumps can be added to the critical load panel. Many Westover homes also have ejector pumps that benefit from being on the backup.
How long can a battery keep my sump pump running?
Sump pumps draw modest continuous power between cycles. A single battery typically runs the sump and other essential loads for sixteen to twenty four hours. Two batteries doubles that.
Does my homeowners insurance cover basement flooding from an outage?
Standard homeowners policies often do not cover water damage from sump pump failure during a power outage. Some policies offer a sump pump rider for additional cost. Battery backup is the more reliable fix.
Can battery backup work with my Westover home’s existing wiring?
Yes in most cases. We confirm panel and circuit capacity during the free design appointment.
References & Related Reading
The full guide: Battery Backup Power and Critical Load Panels: A Northern Virginia Master Electrician’s Complete Guide
Service page: Battery Backup Power & Critical Panel Installation
Other Arlington County homes I help:
Across Northern Virginia, similar installations in other counties:
- Battery Backup Power in Great Falls, VA
- Battery Backup Power in Purcellville, VA
- Battery Backup Power in Gainesville, VA
Authoritative References (APA)
National Fire Protection Association. (2023). NFPA 70: National Electrical Code, Article 706 Energy Storage Systems.
Underwriters Laboratories. (2023). UL 9540: Standard for Energy Storage Systems and Equipment.
U.S. Energy Information Administration. (2024). Annual electric power industry report: Reliability metrics of U.S. distribution systems. https://www.eia.gov/electricity/annual/
National Renewable Energy Laboratory. (2024). Residential battery storage: Cost and performance benchmarks. https://www.nrel.gov/
Ready to Stop Losing Power?
If your last outage cost you food, work hours, basement flooding, or just plain sleep, the next one does not have to. I would rather come out to your house and walk through the design with you in person than try to size a system over the phone. The site visit and the proposal are on me.
📞 Call 703-225-8222 or book online. PRO Electric plus HVAC is veteran owned and operated, licensed and insured in Virginia.
