Cape Cod's full-service Sol-Ark provider. We design, permit, install, and monitor whole-home Sol-Ark power plants — solar, battery, and generator integrated behind one hybrid inverter, run from the MySolArk V2 app. Energy independence on day one. Income from the grid the next.
9.7 kW producing. 8.3 kW selling to the grid. Battery full. Snapshot from the founder's plant in Brewster.
It burns fuel 24/7 during outages. You're making emergency fuel runs, it's loud, and you have no idea how much it will cost you in a multi-day event. It produces nothing the rest of the time.
By law, it has to. Federal safety rules require your panels to disconnect the instant the grid goes down. You paid for those panels to work during outages, but they sit idle when the power fails.
Your bill goes up every year. Your solar blunts the damage but doesn't stop it. You don't set the rules, you don't get paid when the grid needs power, and you have no way to push back. The utility writes the deal, you sign it.
APS doesn't show up to your house with a contractor we just met. Every Sol-Ark we install on Cape Cod is wired by an electrical contractor that's been working on this peninsula for over a decade. Every install is permitted, inspected, and warrantied through them. We don't subcontract install to the lowest bidder — the install partner is a fixed part of the offering.
Cape Cod-based electrical contractor based in Orleans, run by owner Douglas Velie. Over a decade of residential and commercial electrical work on the Cape, BBB-accredited since 2015, 5-star customer reviews. Every Sol-Ark inverter, EG4 battery cabinet, and generator interconnect APS deploys is wired, torqued to spec, and commissioned by Osprey's licensed electricians — following Sol-Ark's documented commissioning sequence on every job. They handle the electrical permit, the building permit (CSL), the inspection, and the long-term electrical service relationship.
Texas-engineered hybrid inverters powering 150,000+ residential and commercial systems nationally. The Limitless 15K delivers 15kW continuous, 24kW surge, and a 200A passthrough — enough to back up a whole house including HVAC, well pump, and EV charging.
Solar panels, generator, battery. We assess what's already there and what's missing. We design from reality, not from a sales spec sheet.
A Sol-Ark inverter connects everything. Battery adds storage and income potential. You get exact components, costs, and projected returns. Nothing hidden.
Osprey Electrical handles all wiring and permits. Usually 1-2 days. Everything inspected and permitted properly.
The app shows you everything: income earned, power flowing, modes switching. You operate your power plant from your phone.
Three minutes. See your custom Sol-Ark blueprint, component costs, and projected income.
Our Installation Partner
Licensed & insured · Orleans, MA · Since 2015
BBB Accredited · All work permitted & inspected · Cape Cod & South Shore
Safety
We use lithium iron phosphate (LFP) batteries, the safest chemistry available. LFP cells don't experience thermal runaway the way lithium NMC batteries do.
Sol-Ark has zero CPSC recalls and zero reported fire incidents. Their inverters are UL 1741 SA listed and designed for safe operation in grid-tied and off-grid modes.
Why this matters: Tesla recalled 10,500 Powerwall 2 units in 2025 for fire risk. LG Chem recalled 10,000+ home batteries (twice) for the same. Both use NMC chemistry. We chose LFP specifically because it eliminates this risk.
Sol-Ark engineers and manufactures the most installed hybrid inverter in North America. The Limitless 15K delivers 15,000W continuous, 24,000W surge, and a 200-amp passthrough — enough to back up an entire home, including HVAC, well pump, EV charger, and large appliances. AC-coupled, so it integrates with the solar you already have. Texas-engineered, UL-certified, zero recalls, zero reported fires. APS is the Cape Cod authorized dealer that designs, installs, and operates these systems for you.
Sol-Ark just released its next-generation homeowner app. Built for the people who own the system, not just installers. Every Antifragile customer gets it the day we commission.
7 kW in from the panels. 6 kW out to the grid. Battery full. Home on 924 watts. Captured from the founder's plant in Brewster.
Sol-Ark builds the inverter and the app. We're the local team that turns those two products into a working power plant on your house. Site assessment, system design, permitting, install, Sol-Ark cloud commissioning, Connected Solutions enrollment, and ongoing remote tuning — one company on Cape Cod, end to end.
Your plant produces power, stores it, and sells it. Connected Solutions pays you $275/kW per year for 5 years. You own the relationship with the grid.
Connected Solutions payments start the moment your system is commissioned. You're earning money while you're paying off the battery through a 0% HEAT Loan.
Earning mode sells excess power during peak hours. Storm mode hardens your home before weather hits. Fortress mode disconnects from the grid entirely. You control all three from your phone.
The battery does the heavy lifting during outages. Your generator only runs when truly needed, not all day and night. Multi-day outages become manageable instead of terrifying.
The app is your control room. Real-time income, power flows, battery status, mode switching. Few homeowners have this level of visibility and control over their energy. It's the upgrade high-end systems deserve.
It's not a cost. It's an investment with returns. The battery pays for itself in ~2.5 years via Connected Solutions income. Everything after that is pure gain.
Solar ramping at sunrise, peaking near 9.7 kW, selling to the grid most of the day. Battery charged by midday and held full. Home running on its own production. This isn't a projection — it's the founder's plant, last week.
| Capability | Generator Only | Generator + Battery (Old) | Your Power Plant |
|---|---|---|---|
| Covers short outages (2-4 hrs) | ✗ Wastes fuel | ✓ ~2 hours | ✓ 8-26 hours silent |
| Multi-day outage handling | 24/7 noise, huge fuel consumption | Better, but no income | ✓ Battery + gen tandem = efficiency |
| Solar in an outage | ✗ Shut down by law | ✗ Shut down by law | ✓ Sol-Ark keeps it running |
| Earns you money | ✗ Pure cost | ✗ Pure cost | ✓ $275/kW/yr × 5 years |
| Fuel efficiency | ✗ Continuous | Better | ✓ Only 2-4 hours daily max |
| You control it | ✗ Manual start | Varies | ✓ App, three modes |
| Monitored 24/7 | ✗ No | Varies | ✓ Sol-Ark cloud + local support |
| Pays for itself | ✗ Pure cost | 15-20 years | ~2.5 years (battery portion) |
Connected Solutions pays you $275/kW every year for 5 years just for having a battery.† Financed at 0% through the Mass Save HEAT Loan, your battery pays for itself in ~2.5 years via CS income alone.‡ Every cost is visible and verifiable. See footnotes at the bottom of this section for the assumptions behind these numbers.
Sol-Ark 12K inverter + 1 battery (14.3 kWh). Covers 8-13 hours at typical draw. Solar recharges by day, generator tops off only if needed.
| Sol-Ark 12K inverter | ~$5,500 |
| 1x EG4 PowerPro battery (14.3 kWh) | ~$3,500 |
| Portable generator (DuroMax 13K) | ~$1,500 |
| Electrical components (disconnects, wire, enclosure) | ~$1,000 |
| Installation (Osprey Electrical) | ~$3,500 |
| System design + project management | Included |
| Estimated total | ~$15,000-$16,000 |
The Sol-Ark 15K handles your entire panel: HVAC, well pump, EV charger, everything. 2 batteries give you 16-26 hours of coverage and $229/mo in Connected Solutions income against a $202/mo loan payment. Cash-flow positive from month one.†
| Sol-Ark 15K inverter | ~$5,500 |
| 2x EG4 PowerPro battery (28.6 kWh) | ~$7,000 |
| Portable generator (DuroMax 13K) | ~$1,500 |
| Electrical components | ~$1,200 |
| Installation (Osprey Electrical) | ~$4,500 |
| System design + project management | Included |
| Estimated total (2 batteries) | ~$18,500-$20,500 |
Sol-Ark 15K or 18K, 3+ batteries, standby generator. HVAC, EV charging, well pump, pool. Everything covered. Connected Solutions income ($344/mo) exceeds the HEAT Loan payment ($298/mo). The batteries pay for themselves in ~2.5 years. Everything after that is pure return.*
| Sol-Ark 15K or 18K inverter | ~$5,500-$7,500 |
| 3-4x EG4 PowerPro battery (42-57 kWh) | ~$10,500-$14,000 |
| Standby generator (Generac/Kohler) | ~$8,000-$10,000 |
| Electrical components | ~$1,500 |
| Installation (Osprey Electrical) | ~$7,500-$9,000 |
| System design + project management | Included |
| Estimated total | ~$34,000-$44,000+ |
We're not a traditional contractor that marks everything up 40-50%. Here's the deal: you get a Sol-Ark inverter at our distributor cost (that's where we earn on equipment). Batteries, generators, panels: all at the price we pay, passed through to you. Installation is done by Osprey Electrical at their rates. We design the system and manage the project. You can verify every line item. We think that's how it should work.
| Incentive | Inverter + Generator |
Battery + Inverter + Gen |
Full System (+ Solar) |
Commercial (Any) |
|---|---|---|---|---|
| Connected Solutions $275/kW/yr, 5 years via Cape Light Compact |
✗ | ✓ | ✓ | ✓ |
| HEAT Loan (0%, 7 yrs) Up to $25K via Cape Cod 5 |
✗ | ✓ Battery + install |
✓ Battery only, not solar |
✗ Residential only |
| Eversource Rebate $500 one-time |
✗ | ✓ | ✓ | Verify |
| SMART 3.0 ~$0.03/kWh + $0.04/kWh storage adder, 20 yrs |
✗ | ✗ Existing solar only |
✓ New solar installs |
✓ |
| Federal 48E ITC (30%) Construction before July 4, 2026 (solar) / 2033 (battery) |
✗ | ✗ Residential |
Via lease/PPA* | ✓ |
| 100% Bonus Depreciation MACRS 5-year, full first-year deduction |
✗ | ✗ Residential |
✗ Residential |
✓ |
*Residential homeowners lost the 30% federal tax credit (Section 25D) as of Jan 1, 2026. However, if adding new solar, a lease or PPA structure lets a financing company claim the 48E credit and pass savings to you as lower payments. Commercial properties get the best deal: 30% ITC + 100% bonus depreciation can cut effective cost by 40-55%. Contact us for commercial pricing. All rates confirmed at time of proposal.
† Connected Solutions earnings and payback claims assume your battery is properly commissioned and dispatches at its full rated capacity during Cape Light Compact summer peak events. Actual year-one earnings can be lower if inverter settings (Time-of-Use caps, self-consumption mode, grid-sell limits) throttle dispatch. We verify and tune these settings as part of every install. Program rates ($275/kW/yr, 5 years) are set by Cape Light Compact and subject to change.
‡ HEAT Loan coverage assumes Cape Cod 5 approves your system components (battery, inverter, installation labor) under the 0% Mass Save HEAT Loan program. Battery storage is explicitly eligible; inverter and labor eligibility is being confirmed and has been assumed in these estimates. If any component is excluded, the covered amount adjusts and the balance is financed separately at market rates. We'll confirm exact coverage in your written proposal.
Equipment pricing reflects current distributor cost to us as of April 2026 and is passed through with no markup. Sol-Ark inverter pricing assumes our qualifying distributor quantity. All estimates are subject to site assessment, final component selection, and written proposal.
Tell us what you have (solar, generator, both, neither), pick the rooms you want covered, and our estimator gives you the exact components, costs, and savings for your home. No sign-up required.
No email required. Results shown immediately.
Three minutes to see what your plant looks like. Custom Sol-Ark blueprint sized to your home, component list at our cost, projected Connected Solutions income, financing breakdown. No obligation, no pushy calls.
Antifragile Power Systems is a Sol-Ark® authorized dealer. The Sol-Ark name and Limitless™ are trademarks of Sol-Ark, LLC. APS is an independent contractor offering full-service Sol-Ark design, install, and monitoring on Cape Cod.