Home›🇯🇲 Jamaica›Solar Calculator Jamaica

🇯🇲 Solar Calculator Jamaica

Enter your monthly JPS electricity bill in Jamaican dollars and parish — get solar system size, JPS net billing export credits, hotel and resort scenarios, payback period of 4–6 years for homes and 3–5 years for commercial, and 25-year savings.

Your electricity details
J$JMD
Solar system results — Jamaica
5 kWp system — 1606 kWh/kWp/yr
Monthly kWh usage455 kWh/mo
Annual solar production8,030 kWh/yr
Self-consumption savings (J$ 55/kWh)J$ 220,825/yr
Net billing export credit (~80% retail)J$ 176,660/yr
Total annual benefitJ$ 397,485/yr
System cost rangeJ$ 1,750,000 – J$ 2,500,000
Cost in USD (approx)$11,290 – $16,129
Payback period5.3 years
25-year net savingsJ$ 7,812,125
Outstanding solar economics: Jamaica's JMD 55/kWh electricity rate (~$0.35 USD/kWh) combined with 5.4–5.7 PSH creates some of the Caribbean's best solar payback — typically just 4–6 years. Hotels and resorts in Montego Bay and Ocho Rios have achieved sub-4 year payback on large commercial installations.
Link copied to clipboard

How to Use This Calculator

Enter your monthly JPS bill in Jamaican dollars

Enter your average monthly bill from JPS (Jamaica Public Service) in JMD (Jamaican dollars). Jamaica has some of the Caribbean's highest electricity rates — approximately JMD 50–60/kWh (around $0.32–0.39 USD/kWh) due to near-total dependence on imported fuel oil for power generation. This high electricity cost is the primary driver of Jamaica's exceptional solar economics — high rates mean solar savings are correspondingly large, compressing payback periods to 4–6 years even at installation costs of $2,200–3,200/kWp USD.

Select your parish for peak sun hours

Jamaica enjoys outstanding solar resources across the island. St James/Montego Bay (5.7 PSH) on the northwest coast is Jamaica's sunniest parish, benefiting from the dry leeward side of the island's mountains. St Catherine, Westmoreland, and Trelawny (5.6 PSH) are close behind. Kingston and St Andrew (5.5 PSH) on the southeast coast are excellent. Portland (5.4 PSH) on the northeast coast receives more rainfall due to trade winds but still has outstanding solar production. Jamaica's consistent tropical sunshine is remarkably uniform across parishes — location matters far less than system sizing and self-consumption optimization.

JPS net billing scheme

JPS operates a net billing (not true net metering) scheme. Unlike 1:1 net metering where export is credited at full retail rate, JPS net billing credits surplus at approximately 80% of retail — JPS retains a distribution margin on exported power. Credits are applied monthly against your bill; any remaining surplus at year-end is paid out at a lower avoided-cost rate. Despite this partial-value export, JPS net billing still delivers excellent economics given Jamaica's high retail rates.

The Formula

Monthly kWh = Monthly Bill ÷ J$ 55/kWh (JPS blended retail rate) Annual production = kWp × PSH × 365 × 0.80 efficiency Self-consumption = Annual kWh × 50% (net billing) or 70% (self-consumption only) Self-consumption savings = Self-consumed kWh × J$ 55/kWh retail Net billing export credit = Exported kWh × J$ 55/kWh × 80% (JPS margin) System cost = kWp × J$ 350,000–500,000/kWp (~$2,200–3,200/kWp USD) Payback = Total cost ÷ Annual benefit (typically 4–6 years)

Jamaica's solar framework is regulated by the Office of Utilities Regulation (OUR) and JPS under the Net Billing Tariff (NBT) guidelines. The OUR periodically reviews net billing rates — check our.org.jm for current export credit rates. System costs of J$ 350,000–500,000/kWp ($2,200–3,200/kWp) reflect Jamaica's import-dependent hardware market. Hurricane hardening (reinforced racking, impact-resistant panels) adds 10–15% to installation costs and is strongly recommended. Tourism hospitality is Jamaica's fastest-growing solar segment — hotels in Montego Bay, Ocho Rios, and Negril are major solar adopters.

Example

Marcus — Kingston family home, 5kWp with net billing

Marcus pays J$ 25,000/month for his Kingston home. He installs a 5kWp system and connects to JPS net billing.

Monthly billJ$ 25,000 (~$161 USD)
Parish / PSHKingston, 5.5 PSH
System size5 kWp
Net billingYes — JPS monthly settlement

Result

Annual production~8,030 kWh/yr
Production per kWp~1,606 kWh/kWp/yr
Self-consumption savings~J$ 220,825/yr
Net billing export credit~J$ 176,660/yr
Total annual benefit~J$ 397,485/yr
System costJ$ 1,750,000 – J$ 2,500,000
Cost in USD~$11,290 – $16,130
Payback~5.4 years
25-year net savings~J$ 7,812,125

Kingston's 5.5 PSH delivers outstanding production (1,606 kWh/kWp/yr — far above European equivalents). JMD 55/kWh electricity costs make every kWh of solar production extremely valuable. Even with JPS's 80% net billing export rate (not full 1:1), Marcus achieves payback in about 5.4 years — among the Caribbean's best returns.

FAQ

Absolutely — Jamaica has some of the Caribbean's most compelling solar economics. JPS's retail rate of approximately JMD 55/kWh (~$0.35 USD/kWh) is among the highest in the region due to almost complete dependence on imported fuel oil. Combined with 5.4–5.7 PSH across all parishes, solar payback is typically 4–6 years for residential systems and 3–5 years for large commercial/hotel installations. Hotels in Montego Bay, Ocho Rios, and Negril have been among Jamaica's most aggressive solar adopters, some achieving sub-4 year payback on 100kWp+ rooftop systems.
JPS operates a Net Billing Tariff (NBT) regulated by the Office of Utilities Regulation (OUR). When your solar system produces more than you consume, surplus is exported to the JPS grid. JPS credits this at approximately 80% of the current retail rate (not 1:1 true net metering). Credits are applied monthly against your consumption. If credits exceed consumption in a month, they carry forward. At year-end, any remaining credit balance is paid out at a lower avoided-cost rate. To register: contact JPS Renewable Energy department, complete a grid connection application, and have a JPS-approved installer commission your system with a certified bidirectional meter.
Exceptional. Jamaica's tourism hospitality sector is the country's biggest solar adopter for good reason. Large hotels and all-inclusive resorts typically have high daytime electricity consumption (air conditioning, pools, restaurants, laundry) that perfectly matches solar production hours. A 100kWp resort system in Montego Bay or Negril can produce 160,000–170,000 kWh/year, offsetting JMD 8–9 million in annual electricity bills. Some resorts have achieved payback in under 4 years. Roof space is typically abundant. Hurricane hardening is essential — use impact-rated racking systems and panels with high wind-load certification.
St James/Montego Bay (5.7 PSH) is Jamaica's sunniest parish, benefiting from its location on the leeward northwest coast in the rain shadow of the Blue Mountains. St Catherine, Westmoreland, and Trelawny (5.6 PSH) are close behind. Kingston and St Andrew (5.5 PSH) are excellent. Portland (5.4 PSH) on the northeast coast receives slightly more rainfall from trade winds but still has outstanding solar production. Jamaica's intra-island solar variation is relatively small — even Portland's 5.4 PSH is exceptional by global standards.
Yes — hurricane protection is essential for Jamaican solar installations. Jamaica sits in the Caribbean hurricane belt and experiences direct hits or near-misses every few years. Specify racking systems rated for wind loads of at least 150 mph (Category 4 hurricane). Use solar panels with high wind-load certification (many premium panels are rated to 2400 Pa front/1600 Pa back load). Ground-level panel tilt angles of 10–15° reduce wind loading vs steep angles. Roof penetrations must be properly sealed and flashed. Always check that your installer carries proper liability insurance and that your homeowner's/commercial property insurance covers the solar system. JPS net billing agreements require disconnection capability during severe weather events.

Related Calculators

☀ Solar Panel Calculator
Universal panel sizing from daily kWh and location.
🔋 Solar Battery Calculator
Size a battery for hurricane 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/jm/solar-calculator-jamaica"
  width="100%" height="700" frameborder="0"
  title="Jamaica Solar Calculator"></iframe>