Data sources
Every source this site relies on, what each one is allowed to support, and when it was last verified. This page is generated from the same registry the pages read from, so it cannot drift from reality.
Freshness policy
Each category has a maximum age. Categories marked as hard expiry are withheld from pages once past it, because a stale rate or incentive is worse than no figure at all.
| Category | Max age | On expiry | Why |
|---|---|---|---|
| electricity rate | 90 days | Withheld from pages | Florida fuel-cost adjustments move rates several times a year. |
| incentive | 90 days | Withheld from pages | Tax credits change with legislation and are the most damaging fact to get wrong. Never show a stale one. |
| tariff rule | 180 days | Warning raised | Interconnection and net-metering rules change through slower rulemaking. |
| product spec | 365 days | Warning raised | Datasheets are revised at product-generation boundaries. |
| warranty | 365 days | Warning raised | Warranty terms change with product revisions. |
| installed pricing | 120 days | Withheld from pages | Installed pricing is the claim most likely to mislead a buyer if stale. |
| market observation | 120 days | Withheld from pages | Helio41 market statistics must describe a recent, stated observation window. |
| permitting | 365 days | Warning raised | Permit fees and review times change on municipal budget cycles rather than continuously. Soft expiry rather than hard: a slightly old review time is still useful guidance, whereas withholding it leaves a reader with nothing. |
| geography | 3650 days | Warning raised | Coordinates and county boundaries are effectively static. |
| methodology | 730 days | Warning raised | Model choices change rarely and are versioned. |
Government and regulators
Residential Clean Energy Credit (Internal Revenue Code §25D)
Verified August 16, 2026 · 46 days ago
Internal Revenue Service
Existence, rate and expiry of the federal residential clean energy credit for homeowner-owned solar and battery systems.
Freshness category: incentive
One Big Beautiful Bill Act, Public Law 119-21 (enacted 4 July 2025)
Verified August 16, 2026 · 46 days ago
United States Congress
Termination of the §25D Residential Clean Energy Credit for expenditures made after 31 December 2025.
Freshness category: incentive
Primary text not reachable from the build environment; status corroborated across multiple independent tax and legislative summaries citing the public law. Flagged for primary confirmation.
Verified August 16, 2026 · 46 days ago
Florida Public Service Commission
Net-metering eligibility, interconnection tiers and system-sizing limits for customers of Florida investor-owned utilities.
Freshness category: tariff rule
Florida Statutes §212.08(7)(hh), Solar energy systems sales and use tax exemption
Verified August 16, 2026 · 46 days ago
Florida Legislature
Exemption of solar energy systems and components from Florida sales and use tax.
Freshness category: incentive
Florida Statutes §193.624, Assessment of residential renewable energy source devices
Verified August 16, 2026 · 46 days ago
Florida Legislature
Exclusion of the added value of a residential renewable energy source device from Florida property tax assessment.
Freshness category: incentive
Florida Statutes §163.04, Energy devices based on renewable resources
Verified August 18, 2026 · 44 days ago
Florida Legislature
The Florida Solar Rights Act: a deed restriction, covenant or homeowners association may not prohibit or effectively prohibit solar collectors, and may determine roof placement only within an orientation south or within 45 degrees east or west of due south, and only where that does not impair the effective operation of the collectors.
Freshness category: tariff rule
Primary text not reachable from the authoring environment. Provisions corroborated across the Florida Senate statute text, the Florida Solar Energy Center summary and multiple Florida community-association law sources. Flagged for primary confirmation before any page relying on it is used in paid acquisition.
HVHZ product approval — Miami-Dade Notice of Acceptance and Florida Product Approval
Verified August 18, 2026 · 44 days ago
Miami-Dade County and Florida Building Commission
That rooftop PV components installed in the High-Velocity Hurricane Zone require product approval, that a Florida Product Approval carrying HVHZ certification is accepted statewide while a Miami-Dade Notice of Acceptance is a local approval, that the two use the same test standards so only one is needed, and that approval attaches to individual products rather than to a system as a whole.
Freshness category: tariff rule
Corroborated from manufacturer approval listings and trade coverage rather than read from the county product-control database, which is not reachable from the authoring environment. The mechanism is stable; a specific product’s approval status must always be checked against the live listing and never inferred.
Florida Building Code — high-velocity hurricane zone and wind-borne debris provisions
Verified August 16, 2026 · 46 days ago
Florida Building Commission
Wind-load and permitting requirements applying to rooftop solar installations in Florida, including the High-Velocity Hurricane Zone in Miami-Dade and Broward counties.
Freshness category: tariff rule
Miami-Dade County municipalities
Verified August 18, 2026 · 44 days ago
Miami-Dade County
The 34 incorporated municipalities of Miami-Dade County — 19 cities, 6 towns and 9 villages — and therefore which jurisdiction issues a residential PV permit at a given address.
Freshness category: geography
miamidade.gov is not reachable from the authoring environment. The count and composition are corroborated from search results citing this page. Municipal boundaries change only by referendum, so this is stable, but the incorporated/unincorporated status of a specific address should be confirmed against the county before it is relied on for a quote.
Utilities
FPL net metering guidelines and customer-owned renewable generation tariff
Verified August 16, 2026 · 46 days ago
Florida Power & Light
FPL interconnection tiers, sizing limits and treatment of exported energy.
Freshness category: tariff rule
FPL residential rate schedule RS-1
Verified August 16, 2026 · 46 days ago
Florida Power & Light
FPL residential energy and fuel charges used in bill and savings modelling.
Freshness category: electricity rate
Rate values not yet ingested. See scripts/ingest-utility-rates.ts.
Duke Energy Florida residential rate schedules
Verified August 16, 2026 · 46 days ago
Duke Energy Florida
Duke Energy Florida residential pricing used in bill and savings modelling.
Freshness category: electricity rate
Rate values not yet ingested.
Tampa Electric residential rate schedules
Verified August 16, 2026 · 46 days ago
Tampa Electric
Tampa Electric residential pricing used in bill and savings modelling.
Freshness category: electricity rate
Rate values not yet ingested.
JEA net metering and residential rates
Verified August 16, 2026 · 46 days ago
JEA
JEA solar interconnection programme terms. JEA is a municipal utility and is not bound by Florida PSC Rule 25-6.065.
Freshness category: tariff rule
LCEC service territory and net metering
Verified August 18, 2026 · 44 days ago
Lee County Electric Cooperative
LCEC service territory in Lee and Collier counties, and its status as a member-owned cooperative that sets its own interconnection terms rather than operating under Florida PSC Rule 25-6.065.
Freshness category: tariff rule
lcec.net is not reachable from the authoring environment. The territory list is corroborated from search results quoting this page — Cape Coral, North Fort Myers, Sanibel, Captiva, Pine Island, Everglades City, Immokalee, Marco Island, Ave Maria and parts of Lehigh Acres. Note that the list names North Fort Myers and not Fort Myers proper. Flagged for primary confirmation, and rate and programme terms are not ingested.
OUC net metering and residential rates
Verified August 16, 2026 · 46 days ago
Orlando Utilities Commission
OUC solar interconnection programme terms. OUC is a municipal utility and sets its own net-metering programme.
Freshness category: tariff rule
National datasets
Verified August 17, 2026 · 45 days ago
National Renewable Energy Laboratory
Modelled annual AC energy production for a given location, tilt, azimuth and loss assumption.
Freshness category: methodology
Production values not yet ingested in this environment. See scripts/ingest-solar-resource.ts. NREL became the National Laboratory of the Rockies and retired nrel.gov on 29 May 2026; this API now lives on developer.nlr.gov, per https://developer.nlr.gov/docs/nlr-domain-transition/. The organisation name is kept as "National Renewable Energy Laboratory" because that is how the PVWatts model is cited in the literature.
U.S. Solar Photovoltaic System and Energy Storage Cost Benchmark
Verified August 16, 2026 · 46 days ago
National Renewable Energy Laboratory
National residential installed cost benchmarks used as a sanity check, not as a quote.
Freshness category: installed pricing
Benchmark values not yet ingested.
Manufacturers
Verified August 16, 2026 · 46 days ago
Tesla
Powerwall 3 energy capacity, continuous output, and warranty term.
Freshness category: product spec
Verified August 16, 2026 · 46 days ago
Enphase Energy
IQ Battery 5P usable capacity, continuous and peak output, chemistry and warranty.
Freshness category: product spec
Helio41 internal
Helio41 estimate methodology, version 0.1
Verified August 16, 2026 · 46 days ago
Helio41
How Helio41 sizes an indicative system, what it models, and what it deliberately does not claim.
Freshness category: methodology
Where our verification is incomplete
Several facts on this site were confirmed by corroborating multiple independent secondary sources that cite the primary document, rather than by reading the primary document directly. Those values are flagged in our data layer as needing primary confirmation, and the flag is reported by our freshness check. We would rather tell you that than present every fact as equally verified.