Store your solar. Power your life—day and night.
Home Battery Storage — Backup Power & Time‑of‑Use Savings
Lower bills, ride through outages
Control Your Energy on Your Own Terms
Pairing a home battery with solar lets you keep the lights on during blackouts, avoid expensive peak rates, and use more of the clean energy you produce. Sunline Energy designs, installs, and services battery systems that integrate seamlessly with your solar and main service panel.
Why Add a Solar Battery
Harness the Power of the Sun—Even After It Sets
The grid doesn’t always keep up with demand or weather. A battery stores excess solar during the day and delivers it at night or during outages, cutting reliance on the grid and stabilizing your bill.
More Solar, Less Grid
Self Consumption
Store excess daytime production and use it later—at night or during cloudy weather—so you buy less from the utility and shield yourself from rising rates. Self‑consumption makes your solar investment work harder every day and smooths out bill spikes.
Beat Peak Rates
Time-Based Control
Store excess daytime production and use it later—at night or during cloudy weather—so you buy less from the utility and shield yourself from rising rates. Self‑consumption makes your solar investment work harder every day and smooths out bill spikes.
Reliable Outage Protection
Backup Power
Store excess daytime production and use it later—at night or during cloudy weather—so you buy less from the utility and shield yourself from rising rates. Self‑consumption makes your solar investment work harder every day and smooths out bill spikes.
How Battery Storage Works
Simple, Smart, & Seamless
1.
Solar generates DC power during the day.
2.
Your
inverter supplies AC to the home and charges the battery.
3.
At
peak times or outages, the battery discharges to your backed‑up loads.
4.
Monitoring apps show real‑time production, charging, and savings.
Right‑Sizing Your System
Capacity that Fits Your Home & Your Goals
We model your usage, rate plan, and critical loads to recommend storage size. A common rule‑of‑thumb is 1:2 solar‑to‑storage (e.g., a 5 kW DC array pairs well with ~10 kWh usable storage), then adjust for EVs, medical equipment, or extended backup needs.
Proven, safe, & smart
Battery Options We Install
From all‑in‑one systems to modular storage, these industry‑leading LFP batteries deliver long life, strong warranties, and intuitive apps. We’ll help you choose and size the right option for your backup needs, rate plan, and budget.
Tesla Powerwall 3
LFP chemistry, integrated solar inverter, rapid outage detection, and Storm Watch for automatic pre‑charging. Tesla App control for modes like Backup, Self‑Powered, and TOU.
Enphase IQ Battery
Modular microinverter‑based storage with LFP cells, flexible sizing, and Storm Guard. Manage everything in the Enphase App—see charge level, load usage, and solar production.
FranklinWH aPower2
Next‑generation LFP battery that can integrate solar, grid, generator, and EV sources. Strong backup capabilities, 15‑year warranty, and detailed insights in the FranklinWH App.
Installation That Matters
In‑House Engineering, Roofing & Electrical
As a vertically integrated contractor, we design your backup panel, coordinate permits, and complete clean, code‑compliant installations—often in 1–2 days once permits are approved.
Quality & accountability
Why Choose Sunline Energy
One Team for Solar, Roofing & Electrical
A single in‑house team for engineering, roofing, and electrical keeps quality tight and accountability clear.
Roof‑First Design & Clean Installs
Mounting and waterproofing are planned around roof integrity, with tidy conduit runs and code‑clean finishes.
Premium Hardware, Proven Designs
We specify vetted panels, inverters, racking, and batteries built for Southern California performance and longevity.
Transparent Pricing & Honest Timelines
You’ll get a transparent proposal, realistic schedules, and ongoing updates from a dedicated project coordinator.
Permits, Inspections & Interconnection
We handle city permits, inspections, and utility approvals start to finish so your system turns on smoothly.
Local Support, Monitoring & Warranties
Responsive service, system monitoring, and strong workmanship and product warranties from a local team.
Home Battery FAQs
Storage, Savings & Backup Power
Is a home battery right for me?
If your utility provider is SDG&E or SCE, you’ll likely benefit from adding a battery to reduce the amount of energy exported to the grid. Pairing your solar with storage can help you use more of the power you generate, protect against rate changes, and give you backup power during outages.
How much storage do I need?
A common starting point is a 1:2 ratio of solar to storage. For example, a 5 kW DC solar system is often paired with a battery system that has at least 10 kWh of usable energy capacity. Your ideal size will depend on your daily usage, backup needs, and budget, which we can help you evaluate.
What government incentives are available?
Local, State and Federal incentives may be available depending on your area and utility provider, and we’ll help you understand what you qualify for during your proposal.
How do I pay for my battery system?
We have both purchase and third party owned (TPO) options to fit your budget and goals. If you prefer to finance we’ve partnered with reputable lenders so you can access competitive rates.
Testimonials & reviews
Hear from Our Valued Customers
Our customers consistently praise our clean installs, clear communication, and systems that perform as promised.
