★ Tesla Powerwall · Enphase IQ · FranklinWH · SolarEdge
Power when the grid goes down. Savings when it doesn't.
Voltline designs and installs residential and commercial battery storage systems across metro Atlanta. Whole-home backup, solar + storage, peak shaving, and microgrid resiliency — with Georgia Power interconnection handled end-to-end.
340+
Battery systems installed
98.2%
Systems operational since install
< 1 sec
Automatic grid transfer
10 yr
Standard warranty coverage
◆ Brookhaven · Powerwall 3 · 13.5 kWh
◆ Gateway · 200ASection I · Why battery storage
Six reasons Atlanta homes are adding batteries.
From summer thunderstorms to ice storms, Atlanta's grid sees real downtime. A battery isn't just backup — it's daily savings, solar optimization, and future-proofing in one box.
01
◆Backup power
Keep the lights, fridge, and internet on during Georgia Power outages. Automatic transfer in under a second. Whole-home or essential-circuit configs.
02
◆Solar + storage
Store your daytime solar production for evening use. Reduce grid dependence and maximize your PV investment with smart export limiting.
03
◆Peak shaving
Discharge stored energy during Georgia Power peak-rate windows. Cut demand charges on commercial accounts and lower residential time-of-use bills.
04
◆Grid independence
Design toward net-zero or off-grid readiness. Multi-battery stacks, load-shedding logic, and generator integration for extended autonomy.
05
◆EV integration
Charge your EV from stored solar or off-peak battery reserves. Smart load management balances home, battery, and vehicle demand in real time.
06
◆Tax credits & incentives
We file the ITC paperwork, Georgia Power interconnection agreements, and any local rebate documentation — every install ships with a complete packet.
Section II · Tool · Savings estimator
What does a battery save you?
A quick heuristic based on your bill, outage history, and whether you have solar or an EV. For a precise ROI, book a free load assessment.
Your home
Estimated value
$1,464/ year
Estimates are heuristic only. Book a free load assessment for a precise proposal with your actual usage data.
Section III · Common use cases
From bungalow backup to microgrid.
Every system is sized to your load profile, autonomy goals, and budget. We don't sell boxes — we design energy resilience.
01
2–4 weeks
Residential
Whole-home backup
Two or more Powerwalls or IQ Batteries configured for whole-home backup. Automatic islanding during outages, seamless reconnection when grid returns. Sized to your panel and critical-load list.
From $14,500
02
1–3 weeks
Residential
Solar + battery retrofit
Already have solar? We retrofit AC-coupled battery systems that work with your existing inverter and monitoring. No panel swap required in most cases.
From $11,200
03
6–12 weeks
Commercial
Commercial peak shaving
100 kWh to 2 MWh commercial battery systems that discharge during demand peaks. Cut utility demand charges by 30–60% with automated scheduling and real-time monitoring.
From Project-based
04
12–20 weeks
Commercial / Industrial
Microgrid & resiliency
Multi-source microgrids combining solar, battery, and standby generator with automatic source switching. For facilities that cannot tolerate downtime.
From Project-based
05
3–5 weeks
Residential
EV + home energy hub
Integrated system where your battery powers the house during the day, charges your EV at night, and tops up from the grid only at off-peak rates. One app, one installer.
From $18,500
06
4–8 weeks
Residential
Off-grid & remote cabins
Fully off-grid designs with oversized battery banks, DC-coupled solar, and propane generator fallback. Sizing and autonomy calculations included.
From Project-based
◆ Commercial · 1.2 MWh · Peak shavingUtility-scale resilience, engineered for Atlanta load.
Section IV · Hardware
Certified on the brands that matter.
Tesla
Powerwall 3
13.5 kWh · 11.5 kW continuous
Residential
Enphase
IQ Battery 5P
5.0 kWh · 3.84 kW continuous
Residential
FranklinWH
aPower
13.6 kWh · 10 kW continuous
Residential
SolarEdge
Home Battery
9.7 kWh · 5 kW continuous
Residential
Tesla
Megapack
3.9 MWh · 1.5 MW power
Commercial / Utility
Fluence
Gridstack
Modular 250 kWh–2 GWh
Commercial / Utility
Section V · Money on the table
Incentives we file for you.
Federal tax credits, utility programs, and local rebates — every battery install ships with the complete documentation packet.
Federal ITC · Residential
30% tax credit
Investment Tax Credit on battery storage when paired with solar. Standalone residential ESS also qualifies at 30% through 2032.
Federal ITC · Commercial
30% · up to 70% with adders
Base 30% plus domestic content, energy community, and low-income bonuses for qualifying commercial projects.
Georgia Power Solar Buyback
Net metering / PRP
Export excess solar production to the grid or store it. We handle the interconnection application and rate-plan recommendation.
Georgia Power EV Rate + Storage
Time-of-use arbitrage
Charge batteries off-peak, discharge during peak. We program the schedule and handle the Georgia Power rate enrollment.
Voltline isn't a tax advisor — confirm specifics with your CPA. Programs change; we keep current.
Section VI · Honest answers
What every battery buyer asks us.
How long will a battery keep my house running?+
Depends on your load and battery count. A single Powerwall 3 (13.5 kWh) will run essentials — fridge, router, some lights, a bedroom AC — for 8–14 hours. Two Powerwalls handle most 2,500 sq ft homes for a full day. We size based on your critical-load list and desired autonomy.
Can I add battery storage to my existing solar system?+
Yes. AC-coupled batteries like the Tesla Powerwall and Enphase IQ Battery retrofit to virtually any existing grid-tied solar system. We handle the inverter compatibility check, new production meter if needed, and interconnection update.
Do batteries work during a power outage?+
Absolutely — that's their primary job. When the grid goes down, the battery's gateway isolates your home and instantly begins supplying power. Most systems transfer in under a second, fast enough that electronics don't reboot.
How does peak shaving work for commercial buildings?+
We install a commercial battery system sized to your historical demand profile. The battery discharges during your peak usage windows, lowering your peak demand reading that the utility uses to calculate demand charges. Typical savings are 30–60% on the demand portion of the bill.
What maintenance does a battery system need?+
Very little. We recommend an annual inspection — thermal scan of connections, firmware update, capacity check — which we bundle into a low-cost maintenance plan. Most residential batteries are warrantied for 10 years and 70–80% capacity retention.
Will a battery help me sell my house?+
Studies show homes with battery + solar sell faster and at a premium. We provide all documentation — warranty transfer, monitoring app handoff, interconnection agreement — to make the sale smooth.
★ Free estimate · No obligation
Ready to own your power?