Certified Sigenergy Installer
Sigenergy SigenStor Solar & Battery Systems
The most advanced residential energy storage system on the US market — and one of the only platforms that supports true bi-directional EV charging (V2X) for SE Pennsylvania homes.
What is Sigenergy?
Sigenergy is a global energy technology company that builds SigenStor — an all-in-one residential energy system that combines solar inverter, battery storage, EV charging, and AI-driven energy management into a single integrated platform. Unlike traditional installs that bolt together separate components from different manufacturers, SigenStor was designed as one system from the ground up. The result is higher efficiency, simpler installation, smarter energy decisions, and capabilities that competing systems can't match — most notably, true bidirectional EV charging.
Pennstar Solar is a certified Sigenergy installer — one of a small number in Southeastern Pennsylvania. We've completed manufacturer-required training on SigenStor design, installation, and commissioning, which is required for full equipment warranty coverage.
Why we recommend Sigenergy for SE PA homes
1. Modular battery — start small, expand later
SigenStor batteries are stackable in 5-8 kWh modules up to roughly 48 kWh per stack (and multiple stacks can be combined). That means you can start with a 16 kWh system today, then add more capacity in two years when you buy an EV — without replacing your existing equipment. Tesla Powerwall and most competing systems require you to buy fixed-capacity units up front. Sigenergy's modularity protects you from over- or under-buying.
2. True bidirectional EV charging (V2X / V2H)
SigenStor is one of the few residential systems on the US market that supports full bi-directional charging — letting you use your EV's battery to power your home during outages or to pull cheap solar/off-peak energy from the grid into your car. A typical EV holds 60-100 kWh of battery capacity, which is 4-10x what a typical home battery stores. That means a SigenStor + compatible EV can keep your home running for 2-4 days during an extended outage with no fuel and no generator noise. Compatible EVs include Ford F-150 Lightning, Mercedes-Benz EQ models, Tesla (Powershare-equipped Cybertruck/Model 3 LR), and Rivian R1T/R1S. Learn more about V2X →
3. AI-driven energy optimization
SigenStor's onboard intelligence learns your household's consumption patterns, your local weather forecast, and your utility rate structure. It then automatically decides — every minute — whether to charge the battery from solar, discharge to power loads, export to the grid, or pull from the grid. This is especially valuable on PECO's time-of-use tariff, where the system can charge from cheap off-peak grid power and discharge during expensive peak hours for additional savings.
4. All-in-one platform — fewer points of failure
Traditional solar + battery installations stitch together a string inverter, a separate battery inverter, a separate battery, a separate EV charger, and various gateway devices — often from 3-5 different manufacturers. SigenStor unifies all of that into a single platform with one app, one warranty, one tech support number, and one set of firmware updates. Less wiring, fewer interconnection points, fewer warranty disputes if something goes wrong.
5. Whole-home backup capability
SigenStor supports whole-home backup with the optional EV DC fast-charging module and proper service-panel integration. When grid power fails, the system automatically isolates your home, switches to battery (and EV, if connected), and continues to power your full electrical panel — including air conditioning, well pumps, and EV charging — for as long as energy is available. Solar production resumes during the day to recharge the battery for unlimited backup duration.
SigenStor vs. Tesla Powerwall vs. Enphase
| Feature | Sigenergy SigenStor | Tesla Powerwall 3 | Enphase IQ Battery |
|---|---|---|---|
| Modular capacity | 5-48+ kWh, stackable | 13.5 kWh fixed | 5 kWh modules |
| Bidirectional EV charging | Yes (V2H/V2X) | Powershare (limited) | No |
| Integrated EV charger | Yes (DC fast) | No (separate) | No (separate) |
| Inverter included | Yes (hybrid) | Yes | Microinverters separate |
| AI optimization | Yes (onboard) | Cloud-based | Cloud-based |
| Whole-home backup | Yes | Yes | Optional (Sys Controller) |
| Manufacturer warranty | 10 years | 10 years | 15 years |
Specifications based on publicly available manufacturer data as of 2026. Verify current specs at the time of purchase.
Who should consider Sigenergy?
- EV owners and EV-considering homeowners. The V2X capability alone justifies the platform if you have or plan to own a compatible EV — your car becomes a 60-100 kWh whole-home battery on wheels.
- Homeowners who want to start small and expand. Modular batteries let you add capacity later without replacing equipment.
- Anyone on PECO's time-of-use tariff. SigenStor's AI optimization captures TOU arbitrage opportunities most systems can't.
- Homes that want true whole-home backup. The integrated platform handles whole-home backup more cleanly than stitched-together alternatives.
Sigenergy: frequently asked questions
What does a Sigenergy SigenStor system cost?+
Pricing depends heavily on system configuration — solar capacity, battery capacity, whether you include the EV charging module, and whole-home backup integration. As a rough range, a typical Sigenergy + battery + 10 kW solar installation in SE PA falls between $35,000 and $60,000 before any incentives. We provide a detailed itemized quote during the consultation.
Which EVs work with SigenStor's bidirectional charging?+
SigenStor's V2X capability supports compatible EVs from Ford (F-150 Lightning), Mercedes-Benz (EQ models with bidirectional support), Tesla (Powershare-enabled Cybertruck and Model 3 Long Range), and Rivian (R1T and R1S). Compatibility expands as more manufacturers ship CCS-bidirectional firmware. We confirm your specific EV's compatibility before recommending V2X integration.
How long does a Sigenergy installation take?+
Most residential SigenStor installations are completed in 1-2 days for the physical installation, plus standard PECO interconnection lead times (typically 4-6 weeks). The integrated nature of the platform means less time than stitched-together multi-vendor systems.
Can I add Sigenergy to an existing solar system?+
Yes, in many cases. SigenStor can be retrofitted as an AC-coupled battery to existing PV systems. We'll evaluate your existing inverter and electrical service during the consultation to confirm compatibility.
Does Sigenergy work with PA SRECs and PECO net metering?+
Yes. SigenStor systems are PA-certified and earn SRECs from solar production exactly the same as any other system. They're also fully compatible with PECO's 1:1 net metering. Learn more about PA SRECs and PECO net metering.
Is Sigenergy a stable company to buy from?+
Sigenergy was founded by former senior engineers from Huawei's energy division and has deployed hundreds of thousands of systems globally — primarily in Europe and Australia, with rapid US expansion. The 10-year manufacturer warranty is backed by US-based service operations. As certified installers, we have direct manufacturer support for our customers.
Talk to a certified Sigenergy installer
Pennstar Solar is one of a small number of certified SigenStor installers in Southeastern Pennsylvania. We'll design a system tailored to your home, EV plans, and backup goals.
Get Your Sigenergy Consultation