SERVICES
Off-Grid Solar Systems for the East End
Independent solar systems for pool houses, guest cottages, ADUs, barns, and outbuildings — designed for total energy autonomy.
Off-Grid Solar for Pool Houses, Cottages & Outbuildings
Not every structure on your property needs to be tied to the grid. We design true off-grid solar systems for pool houses, guest cottages, ADUs, equestrian buildings, and barns — providing complete energy independence with the design flexibility outbuildings allow.
Designed for Your Outbuildings
Pool houses, guest cottages, barns, and ADUs often have more aesthetic freedom than the main residence. We use this freedom to design solar systems that perform exceptionally well while integrating with the building's character.
True Energy Independence
Off-grid systems aren't tied to the utility — meaning lower long-term costs, no utility connection fees, and complete independence from grid outages. Battery-paired systems ensure year-round operation through every season.
Faster Permitting, Faster Installation
Many off-grid installations require fewer permits than grid-tied residential solar — accelerating the timeline from consultation to operation. We coordinate every permit, every code requirement, and every utility consideration.
100%
Grid Independence
$0
Utility Connection Fees
Faster
Permit Timeline vs. Grid-Tied
100%
Grid Independence
$0
Utility Connection Fees
Faster
Permit Timeline vs. Grid-Tied
Why Apex Energy for Off-Grid Solar
Specialized system designs for pool houses, guest cottages, ADUs, barns, studios, and equestrian facilities.
Permitting expertise across all East End townships — outbuilding installations often proceed faster than primary residence solar.
Battery-paired systems for true off-grid operation — no utility connection required, no ongoing PSEG relationship.
Aesthetic flexibility unique to outbuildings — greater design freedom than ARB-governed primary residences.
How It Works
Our Process
Load & Site Analysis
We assess the building's energy loads, roof or ground-mount options, battery requirements, and any permitting considerations specific to the township and building type.
Off-Grid System Design
Our engineers design a self-contained solar and battery system sized for the building's actual loads, with margin for seasonal variation and occasional higher demand.
Streamlined Installation
Off-grid outbuilding installations are typically completed in one to two days. No utility coordination required, and permitting timelines are often significantly shorter than primary residence projects.
Commissioning & Monitoring
The system is commissioned with remote monitoring configured for battery state of charge, solar production, and load consumption — accessible from your phone.
Pairs Well With
Residential Solar
Complement your outbuilding off-grid system with a full estate solar installation on your primary residence.
Explore Residential Solar →Battery Storage
Every off-grid system we design includes battery storage. We specify Tesla Powerwall, Enphase, or SolarEdge based on the building's requirements.
Explore Battery Storage →Re-Roofing
If a pool house or cottage roof needs attention before solar installation, we can complete both as a single coordinated project.
Explore Re-Roofing →Off-Grid Solar clients also search for
pool house solar installation Hamptons · guest cottage off-grid solar Long Island · ADU solar system East End · barn solar installation Hamptons · equestrian property solar Bridgehampton · outbuilding solar Long Island
"Our guest cottage was a hundred and sixty feet from the main house and connecting it to the grid was going to cost more than I wanted to spend on infrastructure. Apex designed an off-grid system that has run the cottage — lighting, mini-split, the whole thing — without touching the main panel. The guests have never noticed a difference."
— Estate Owner, Water Mill
Begin Your Off-Grid Solar Consultation
A private, no-obligation site assessment at your property.
Request a Private Consultation