Home›🇵🇦 Panama›Solar Calculator Panama

🇵🇦 Solar Calculator Panama

Enter your monthly ENSA, Naturgy, or EDEMET electricity bill in USD — get solar system size, autoconsumo 1:1 net metering credits under Ley 37 de 2013, expat and Canal market context, payback period, and 25-year savings.

Your electricity details
$USD
Solar system results — Panama
3 kWp system — 1460 kWh/kWp/yr
UtilityENSA
Monthly kWh usage682 kWh/mo
Annual solar production4,380 kWh/yr
Self-consumption savings$482/yr
Autoconsumo export credit (1:1)$482/yr
Total annual benefit$964/yr
System cost range$4,200 – $6,000
Payback period5.3 years
25-year net savings$18,990
Autoconsumo registered: Panama's Ley 37 de 2013 requires registering with your utility (ENSA, Naturgy, or EDEMET) before connecting to the grid. Your installer should handle the paperwork. The utility must replace your meter with a bidirectional unit within 30 days of application. USD billing simplifies financial analysis — no currency risk.
Link copied to clipboard

How to Use This Calculator

Enter your monthly bill in USD — Panama uses US dollars

Panama uses the US dollar as its official currency (the balboa is pegged 1:1 to USD and rarely used in practice). This eliminates currency exchange risk for solar ROI calculations — your savings and costs are all in USD. Enter your monthly electricity bill from your utility: ENSA (Empresa de Distribución Eléctrica Metropolitana Norte), Naturgy (formerly Gas Natural Fenosa, serving parts of central Panama), or EDEMET (Empresa de Distribución Eléctrica Metro Oeste). Panama's tiered retail rate ranges from $0.18/kWh for low consumers to $0.28/kWh for high-consumption households — the calculator uses a blended $0.22/kWh average.

Select your province and utility

Panama has excellent solar resources across the country. David in Chiriquí (5.2 PSH) and Chitré in Herrera (5.2 PSH) are Panama's sunniest regions. Panama City and most central provinces (5.0 PSH) have outstanding production. Colón on the Caribbean coast (4.8 PSH) receives more rainfall from Atlantic trade winds and slightly less solar. The province selector automatically shows the local utility (ENSA, Naturgy, or EDEMET) — this matters for your autoconsumo application.

Register for autoconsumo (Law 37 of 2013)

Panama's Ley 37 de 2013 established the autoconsumo framework allowing any electricity consumer to install solar and receive 1:1 net metering for surplus export. Registration is required before connecting to the grid — your installer typically handles the application with your utility. The utility must replace your meter with a bidirectional unit within 30 days. Systems up to 500kW qualify, covering everything from condo rooftops to large commercial installations.

The Formula

Monthly kWh = Monthly Bill ÷ $0.22/kWh (blended ENSA/Naturgy/EDEMET retail) Annual production = kWp × PSH × 365 × 0.80 efficiency Self-consumption = Annual kWh × 50% (autoconsumo) or 75% (self-consumption only) Self-consumption savings = Self-consumed kWh × $0.22/kWh retail Autoconsumo export credit = Exported kWh × $0.22/kWh (1:1, Ley 37 de 2013) System cost = kWp × $1,400–2,000/kWp (installed, USD) Payback = Total cost ÷ Annual benefit (typically 6–9 years)

Panama's autoconsumo framework is governed by Ley 37 de 2013 and subsequent ASEP (Autoridad Nacional de los Servicios Públicos) regulations. The law was enhanced by Executive Decree 36 of 2017, which streamlined the grid connection process and increased the maximum system size to 500kW. System costs of $1,400–2,000/kWp reflect Panama's role as a Central American import hub — Chinese and American panel brands are both available. The Boquete and El Valle expat communities have been early solar adopters, driven by high per-capita consumption and clear financial ROI.

Example

Roberto — Panama City condo, 3kWp with autoconsumo

Roberto pays $150/month to ENSA for his Panama City condo. He installs a 3kWp rooftop system and registers for autoconsumo under Ley 37.

Monthly bill$150 USD
Province / PSHPanama City, 5.0 PSH
System size3 kWp
AutoconsumoYes — Ley 37 de 2013

Result

Annual production~4,380 kWh/yr
Production per kWp~1,460 kWh/kWp/yr
Self-consumption savings~$481/yr
Autoconsumo export credit (1:1)~$481/yr
Total annual benefit~$962/yr
System cost$4,200 – $6,000
Payback~5.3 years
25-year net savings~$18,950

Panama City's 5.0 PSH delivers around 1,460 kWh/kWp/yr — excellent tropical production. The autoconsumo 1:1 net metering makes the full value of all solar production available as savings. USD billing means no currency hedging needed — Roberto's payback calculation is straightforward and inflation-protected.

FAQ

Yes — Panama has strong solar resources (4.8–5.2 PSH), USD billing (no currency risk), 1:1 autoconsumo net metering under Ley 37, and electricity rates of $0.18–0.28/kWh that make solar financially compelling. Residential payback is typically 6–9 years; commercial and high-consumption installations achieve 5–7 years. David in Chiriquí and Chitré in Herrera get the most sun. The Canal Zone, expat communities in Boquete, and Panama City's luxury condo market are active solar adopters.
Panama's Ley 37 de 2013 (Autoconsumo), enhanced by Executive Decree 36 of 2017, allows any electricity consumer to install solar generation and export surplus at full retail rate (1:1 net metering). The process: (1) Select an ASEP-licensed solar installer; (2) Installer submits autoconsumo application to your utility (ENSA, Naturgy, or EDEMET); (3) Utility approves connection design (typically 2–4 weeks); (4) System installed and inspected; (5) Utility replaces meter with bidirectional unit (within 30 days). Credits accumulate monthly and are applied against your bill. Systems from residential scale up to 500kW qualify.
Panama has three electricity distribution companies: ENSA (Empresa de Distribución Eléctrica Norte) serves Panama City (metropolitan north), Colón, and the Canal area; Naturgy (formerly Gas Natural Fenosa, also called EDECHI) serves Chiriquí province including David and Boquete; EDEMET (Empresa de Distribución Eléctrica Metro Oeste) serves the western metropolitan area including La Chorrera and Penonomé. For autoconsumo registration, contact your specific utility — the process is similar but administered separately by each company. ASEP (Autoridad Nacional de los Servicios Públicos, asep.gob.pa) oversees all three utilities.
Very much so — particularly in Boquete (Chiriquí highlands), El Valle de Antón (Coclé), and Coronado (Pacific coast). Expat retirees and remote workers from North America and Europe are familiar with solar economics from their home countries and recognize Panama's excellent conditions (5.0–5.2 PSH in Chiriquí, USD billing, 1:1 net metering). High-consumption villas with air conditioning, pools, and multiple occupants often have monthly bills of $300–600+, making 10–15kWp systems financially compelling with payback under 7 years. The Boquete expat Facebook groups regularly discuss solar installer recommendations.
Installed solar costs in Panama range from $1,400–2,000/kWp. A typical 3kWp condo system costs $4,200–6,000; a 10kWp villa system $14,000–20,000. Panama imports most solar equipment through its Free Trade Zone in Colón — Chinese panel brands (Longi, Jinko, Trina) and US inverters (SolarEdge, Enphase) are both common. Labor costs are moderate. Always use an ASEP-licensed installer — this is required for autoconsumo registration and warranty purposes. Panama City has a competitive installer market; request at least 3 itemized quotes. Financing through Banco Nacional or Caja de Ahorros is available for qualified borrowers.

Related Calculators

☀ Solar Panel Calculator
Universal panel sizing from daily kWh and location.
🔋 Solar Battery Calculator
Size a battery bank for backup and self-consumption.
📈 Solar Savings Calculator
Estimate 25-year electricity savings from solar.
⏳ Solar Payback Calculator
Detailed payback period and ROI calculation.

Embed This Calculator

Free to embed on your website. Just copy this code:

<iframe src="https://solarsizecalculator.com/pa/solar-calculator-panama"
  width="100%" height="700" frameborder="0"
  title="Panama Solar Calculator"></iframe>