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🇵🇪 Solar Calculator Peru

Enter your monthly electricity bill in soles and department — get solar system size, DS-009-2020-MINEM net metering savings, installation cost in USD and PEN, and payback period.

Your electricity details
S/PEN
Solar system results — Peru
5 kWp system — 1460 kWh/kWp/yr
Monthly kWh usage284 kWh/mo
Annual solar production7300 kWh/yr
Self-consumption savingsS/ 3,340/yr
Net metering creditS/ 210/mo (est.)
Total annual benefitS/ 5,860/yr ($1,563/yr)
System cost (USD)$1,900 – $3,100
System cost (PEN)S/ 7,124 – S/ 11,624
Payback period1.6 years
25-year net savingsS/ 137,138 ($36,575)
DS-009-2020-MINEM Net Metering: Peru's net metering regulation allows surplus solar energy to be credited on your electricity bill. Register through your distributor (Luz del Sur, Enel, etc.). Net metering credits are S/ 0.12–0.18/kWh for surplus injection — less than retail rate, so self-consumption first is best strategy.
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How to Use This Calculator

Enter your monthly bill and department

Enter your average monthly electricity bill in Peruvian soles (S/) from your distributor — Luz del Sur or Enel in Lima, or your regional distributor. The calculator uses the OSINERGMIN-regulated residential tariff of S/ 0.704/kWh. Select your department — Tacna (6.8 PSH) and Arequipa (6.5 PSH) are Peru's sunniest regions, while Iquitos (4.5 PSH) in the Amazon jungle has the most cloud cover. Peru's Andean and coastal regions rank among the world's best solar resources.

Set system size and net metering

Select your system size in kWp. Residential systems in Peru typically range from 3–10kWp. Enable net metering if you plan to register under DS-009-2020-MINEM — Peru's regulation that allows surplus solar electricity to be credited on your electricity bill. Net metering registration is done through your local electricity distributor and enables surplus energy credits of approximately S/ 0.12–0.18/kWh.

Dual PEN and USD display

This calculator shows results in both Peruvian soles (S/) and US dollars (USD) because most solar installation quotes in Peru are priced in USD ($0.38–$0.62/W installed), while electricity bills and savings are in PEN. The conversion uses approximately S/ 3.75/USD (verify current Banco Central de Reserva rate).

The Formula

Monthly kWh = Monthly Bill (PEN) ÷ S/ 0.704/kWh (OSINERGMIN tariff) Annual production = kWp × PSH × 365 × 0.80 efficiency Self-consumption = Annual kWh × 50% (no NM) or 65% (with net metering) Self-consumption savings = Self-consumed kWh × S/ 0.704/kWh retail Net metering credit = S/ 120–300/month (DS-009-2020-MINEM registered) Installation cost = $0.38–$0.62/W (USD), converted to PEN Payback = Total cost (PEN) ÷ Annual benefit (PEN)

Peru's DS-009-2020-MINEM regulation (Supreme Decree 009-2020) established the legal framework for net metering (medición neta) for residential and small commercial solar users. Systems up to 100kWp are eligible. Registration is handled by your electricity distributor. The installer must be MINEM-certified. Annual production uses SENAMHI solar irradiance data — Peru's Solar Atlas shows the southern highlands and coastal desert as world-class solar resources exceeding even Spain and Italy.

Example

Carlos — Arequipa home, 8kWp, very sunny highlands

Carlos pays S/ 300/month for his Arequipa home. He installs an 8kWp system to take advantage of Arequipa's exceptional 6.5 PSH solar resource and registers for net metering under DS-009-2020-MINEM.

Monthly billS/ 300
Department / PSHArequipa, 6.5 PSH
System size8 kWp
Net meteringYes (DS-009-2020-MINEM)

Result

Annual production~15,184 kWh/yr
Production per kWp~1,898 kWh/kWp/yr
Self-consumption savings~S/ 6,984/yr
Net metering credit~S/ 210/mo (est.)
Total annual benefit~S/ 9,504/yr (~$2,534/yr)
System cost~$3,040–$4,960 USD (~S/ 11,400–18,600)
Payback~4.0–5.5 years
25-year net savings~S/ 220,000+ (~$58,700+)

Arequipa's 6.5 PSH gives this system outstanding production — nearly 1,900 kWh/kWp/year, rivaling the best locations in Chile and Spain. The 4–5 year payback is among the fastest in South America, making Arequipa one of the world's most attractive residential solar markets.

FAQ

Yes — Peru is one of South America's best solar markets. The southern departments of Tacna (6.8 PSH), Arequipa (6.5 PSH), and Puno (6.0 PSH) rank among the world's highest solar irradiance locations. Even Lima (5.0 PSH) despite coastal fog has excellent solar resources. With DS-009-2020-MINEM net metering and OSINERGMIN-regulated tariffs, residential payback periods of 4–7 years are achievable. Peru's expanding middle class and frequent power outages also make battery-backed solar increasingly attractive.
Supreme Decree 009-2020-MINEM (Ministerio de Energia y Minas) established Peru's net metering framework for prosumers — users who both consume and generate electricity. Eligible systems: up to 100kWp, connected to the low-voltage distribution network. Surplus solar energy is credited at the injection price (~S/ 0.12–0.18/kWh). To register: (1) Contact your distributor (Luz del Sur, Enel, etc.). (2) Submit technical documentation from a MINEM-certified installer. (3) Distributor installs bidirectional meter. Process takes 4–8 weeks.
Installed solar costs in Peru range from $0.38–$0.62 per watt (USD) depending on system size, panel brand, and installer. A typical 5kWp residential system costs $1,900–$3,100 USD (S/ 7,125–11,625 at ~S/ 3.75/USD). Larger commercial systems achieve lower per-watt costs. Chinese panel brands (Jinko, Longi, Canadian Solar) dominate the Peruvian market. Always verify your installer is MINEM-certified. The state-owned Fondo para la Inclusión Energética (FISE) may offer subsidies for rural/off-grid systems.
Tacna (6.8 PSH) is Peru's sunniest department, located on the southern coastal desert. Arequipa (6.5 PSH) in the Andes highlands is exceptionally sunny with dry, clear air and high altitude. Puno (6.0 PSH) and Cusco (5.8 PSH) are also excellent. Lima (5.0 PSH) is good despite morning fog (garua). Iquitos (4.5 PSH) in the Amazon jungle has the lowest irradiance due to persistent cloud cover and humidity — still viable but with longer payback periods.
Peru's residential electricity tariff is regulated by OSINERGMIN (Organismo Supervisor de la Inversion en Energia y Mineria). The blended residential rate is approximately S/ 0.704/kWh (BT5B tariff) as of 2025–2026. Rates vary slightly by distributor and voltage tier but are heavily regulated. Unlike deregulated markets, Peruvian residential customers have limited tariff choices. Commercial and industrial customers (MT2, MT3 tariffs) may have higher rates, improving commercial solar economics. Tariffs are adjusted quarterly by OSINERGMIN.

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