Solar, Tesla Solar Roof and Powerwall Installation in Key West, FL
Key West solar runs through Keys Energy Services interconnection, HVHZ product approval, and often a historic roof review, all on some of the tightest lots we build on.
Tesla Energy
Certified Installer
FL Licensed
Solar + Roofing + Electrical
Veteran Owned
Florida business
Straight answer
What Does Solar Cost in Key West?
Key West homes typically need a 7 kW to 12 kW array, running $16,100 to $36,000 installed. Keys Energy Services interconnection, HVHZ product approval and historic roof review on Old Town properties all shape the design here.
- Serving utility
- Keys Energy Services (KEYS)
- Municipal utility, its own interconnection process
- Wind zone
- 180 mph ultimate design
- Monroe County, HVHZ product approval required
- Roof review
- Historic Architectural Review Commission
- Applies to visible roof planes in Old Town
- Delivery route
- US-1 by truck, some jobs by barge
- Only road connection south of the mainland
Pricing shown is typical and a starting point. Your exact quote is confirmed after a site survey and depends on roof condition, electrical service, equipment choices and local permitting.
Get an accurate quoteHow a Key West project runs
From Site Visit to Keys Energy Services Interconnection
Key West adds two approval steps most mainland cities do not touch: KEYS interconnection and, on many Old Town roofs, historic review.
01
Site Visit and Roof Plane Mapping
We document which roof planes are visible from the public right of way, since that determines whether Historic Architectural Review Commission sign off applies.
02
HVHZ Engineering and Permit Submittal
Racking, flashing and fasteners are specified with Miami-Dade NOA or Florida product approval documentation before the permit goes to the City of Key West or Monroe County.
03
HARC Review, If the Property Requires It
Old Town properties with street facing roof changes route through HARC before the building permit is issued.
04
Material Delivery Down US-1
Equipment is staged in Miami and trucked down in a single run, with larger jobs occasionally requiring barge delivery for tight island access.
05
Install and Keys Energy Services Interconnection
After the city or county inspection passes, we file interconnection paperwork with KEYS directly and coordinate the meter exchange.
Historic Old Town
Building Around HARC Review and Shaded Conch Home Lots
Old Town's conch homes sit on some of the tightest, most heavily shaded lots we work on, often with wood frame construction and metal roofing already in place. Roof changes visible from the street generally need Historic Architectural Review Commission approval, so we lay out panels on rear and side planes first and reserve street facing roof area only when the layout requires it.
Florida Statute 163.04 limits how far a historic district can restrict solar outright, and our submittal packages are built around that standard so HARC review does not become a repeated back and forth.
Utility comparison
Keys Energy Services Versus the Co-Op Utilities Up the Keys
Key West sits on Keys Energy Services territory, a municipal utility distinct from Florida Keys Electric Cooperative, which serves Islamorada and Key Largo.
| Factor | Keys Energy Services (Key West) | Florida Keys Electric Cooperative (Upper Keys) |
|---|---|---|
| Utility type | Municipal utility | Member owned cooperative |
| Interconnection filing | Filed with KEYS, separate from the building permit | Filed with FKEC, separate from the county permit |
| Net metering credit | Monthly rolling credit, annual true up | Monthly rolling credit, annual true up |
| Coverage area | Key West and the Lower Keys | Upper and Middle Keys including Islamorada and Key Largo |
HVHZ product approval
What Monroe County Requires on Every Key West Install
Monroe County holds Key West to HVHZ style wind and product standards, and salt air exposure from both the Atlantic and the Gulf adds a corrosion layer beyond the wind requirement.
- Ultimate design wind speed
- 180 mph
- Monroe County HVHZ style requirement
- Product approval
- Miami-Dade NOA or FL product approval
- Required on racking, flashing and fasteners
- Roof type
- Metal or tile
- Standing seam metal is common across Old Town; we do not install shingle
- Hardware standard
- Marine grade stainless
- Standard on every job given salt air exposure on both sides of the island
Tight lots and access
Staging a Project on a Narrow Old Town Lot
Limited Staging Space
Many Old Town lots have little to no side yard or driveway, so we schedule deliveries in smaller loads timed to the crew's daily progress instead of dropping a full pallet at the curb.
Single Road Delivery
US-1 is the only road connection south of the mainland, so equipment is consolidated in Miami and trucked down in one run, with barge delivery considered for larger jobs where truck access is restricted.
Salt Air Corrosion Detailing
Standing seam metal roofs get stainless clips and fasteners as standard, not an upgrade, since Key West sits between two saltwater bodies.
Right fit
Which System Fits a Key West Home
Old Town homes with shaded or historic restricted roofs often do best with a smaller array paired with a Powerwall 3 for backup value, since roof area available for street facing panels can be limited. Midtown, New Town and Stock Island homes with clearer roof exposure typically support a full 8 kW to 12 kW system sized to year round AC and pool loads, and many homeowners pair that with battery backup given how long outages tied to tropical systems can run on a single highway island chain.
Local services
Services We Install in Key West
Every scope below is performed by Coastal Energy crews serving Key West, never handed to a subcontractor.
Solar Installation Key West FL
Full design, permitting and installation of owned rooftop solar, run by our own crews under license EC13013993.
Powerwall Installation Key West
Tesla Powerwall 3 backup sized off your real usage, including Gateway wiring and utility coordination.
Answers
Frequently Asked Questions
Which Coastal Energy office covers Key West?
Can I install solar on a historic Key West home?
Why do Old Town lots take extra planning?
Can you replace my Key West roof and install solar in one project?
Who handles interconnection for a Key West solar system?
How does equipment get delivered to Key West?
What wind rating does Key West solar need to meet?
Why do Key West homeowners add a Powerwall?
Keep reading
Related Pages
Key Largo Solar
Florida Keys Electric Cooperative territory in Monroe County, covered by the same Miami based crews.
Islamorada Solar
The Village of Islands, just south of Key Largo along the Overseas Highway.
Tesla Powerwall
Battery backup for outages that can outlast a mainland Florida storm event.
Metal vs. Tile Roof for Solar
How roof type shapes mounting on standing seam Old Town roofs.
Solar and Roofing Service
Inspections and repairs for existing Key West systems, ours or not.
Get a Key West Solar Estimate
Send your address and a recent Keys Energy Services bill. We return modeled production and a real cost range for your home.