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🇲🇻 Solar Calculator Maldives

Enter your STELCO bill and atoll — get solar system size, net metering income at retail rates, resort island diesel replacement savings, and payback period. High electricity rates make the Maldives one of the Indian Ocean's best solar investment locations.

Your electricity details
RfMVR
Solar system results — Maldives (STELCO Grid)
5 kWp system — 1635 kWh/kWp/yr
Monthly kWh usage (est.)333 kWh/mo
Annual solar production8,176 kWh/yr
Self-consumption savingsRf24,528/yr
STELCO net metering incomeRf24,528/yr
Total annual benefitRf49,056/yr
System cost rangeRf90,000 – Rf125,000
Total installed cost (midpoint)Rf107,500
Payback period2.2 years
25-year net savingsRf1,118,900
Excellent economics! STELCO's high retail rates (~MVR 6/kWh, ~$0.39 USD) make the Maldives one of the Indian Ocean's best solar investment locations. Your payback of 2.2 years is among the fastest for residential solar globally.
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How to Use This Calculator

Enter your STELCO bill and atoll

Enter your average monthly STELCO (State Electric Company Limited) electricity bill in Maldivian rufiyaa (MVR). STELCO charges MVR 4–8/kWh (~$0.26–0.52 USD) — some of the Indian Ocean's highest electricity prices. Select your atoll: Southern Atolls, Addu, and Fuvahmulah (all 5.7 PSH) receive the most solar radiation. Malé and North Malé Atoll (5.6 PSH) are nearly identical. The Maldives' equatorial position (0–7°N) means consistent solar production with minimal seasonal variation — a significant advantage.

STELCO net metering vs resort off-grid

Enable STELCO net metering for grid-connected homes in Malé and larger islands with STELCO supply. Surplus solar is credited at the full retail tariff. For resort islands and remote atolls that operate independent diesel microgrids, disable net metering — the calculator switches to diesel replacement mode, where economics are even better (diesel on islands costs 2–3x STELCO rates).

Resort hospitality context

The Maldives hosts over 170 resort islands, most generating electricity from diesel shipped by boat. Diesel costs $0.50–1.50/kWh equivalent on remote islands. Solar PV with battery storage can reduce diesel consumption by 40–70%, generating exceptional ROI for resort operators. Larger systems (50–200kWp) with 100–500kWh battery banks are increasingly common in premium eco-resort developments.

The Formula

Monthly kWh = Monthly Bill ÷ MVR 6/kWh (blended STELCO retail) Annual production = kWp × PSH × 365 × 0.80 efficiency STELCO grid-tied self-consumption = Annual kWh × 50% Self-consumption savings = Self-consumed kWh × MVR 6/kWh STELCO net metering income = Exported kWh × MVR 6/kWh (at retail) Resort diesel savings = Annual kWh × MVR 15/kWh diesel equivalent System cost = kWp × MVR 18,000–25,000/kWp (~$1,200–1,600/kWp) Payback = Total cost ÷ Annual benefit (typically 4–6yr grid, 3–5yr resort)

The Maldives' renewable energy policy is governed by the Ministry of Environment, Climate Change and Technology and the Maldives Energy Authority (MEA). STELCO's net metering scheme was introduced under the Maldives Renewable Energy Act. The government's climate vulnerability — the Maldives is one of the world's most climate-threatened nations — has created strong political will for solar adoption. The Green Climate Fund and Asian Development Bank have financed multiple solar projects across the Maldives' outer atolls.

Example

Ibrahim — Local island home, Southern Atolls, 5kWp

Ibrahim pays MVR 3,500/month for his local island home in the Southern Atolls. He installs a 5kWp solar system with STELCO net metering.

Monthly billRf 3,500
Atoll / PSHSouthern Atolls, 5.7 PSH
System size5 kWp
Net meteringYes — STELCO retail rate

Result

Annual production~8,322 kWh/yr
Production per kWp~1,664 kWh/kWp/yr
Self-consumption savings~Rf 24,966/yr
Net metering income~Rf 24,966/yr
Total annual benefit~Rf 49,932/yr
System cost~Rf 90,000–125,000
Payback~2.2 years
25-year net savings~Rf 1,148,300

Southern Atolls' 5.7 PSH produces ~1,664 kWh/kWp/yr — among the world's best solar yields. Combined with STELCO's high retail rates, Ibrahim's system pays back in just 2.2 years. Over 25 years, the system generates Rf 1.1 million in net savings — a transformative return on a Rf 107,500 investment.

FAQ

The Maldives consists of 1,192 islands spread across 90,000 km² of ocean. Generating electricity on small, dispersed islands is inherently expensive — each island either has its own diesel generator or a submarine cable connection. Diesel fuel must be shipped by boat from Malé, adding significant logistics cost. STELCO cross-subsidizes outer island electricity from the more efficient Malé grid, but rates remain MVR 4–8/kWh (~$0.26–0.52 USD) — far above global averages. This is precisely what makes solar so valuable in the Maldives.
Resort islands operate their own diesel microgrids — STELCO does not reach most resort islands. Diesel is the primary electricity source, at effective costs of $0.50–1.50/kWh including transportation and generator maintenance. Solar PV + battery storage (typically lithium iron phosphate) can reduce diesel consumption by 40–70%. A 100kWp solar array with 200kWh battery can cover daytime loads and charge batteries for evening use, displacing 200,000+ liters of diesel per year. Many top Maldivian resorts (Six Senses, Soneva, etc.) have deployed large solar systems as part of sustainability commitments.
Yes, with appropriate specifications. For coastal and island installations: use panels with IP68-rated junction boxes (fully watertight); aluminum or stainless steel mounting frames (not galvanized steel which corrodes rapidly in saltwater); marine-grade cable connectors; and corrosion-resistant inverter housings. Leading manufacturers (SunPower, REC, Jinko) offer marine-rated panels specifically for island environments. Regular freshwater panel washing (monthly) removes salt deposits that can reduce efficiency by 3–7%. With proper specification, systems achieve full 25-year lifespans even in the Maldives' tropical saltwater environment.
Yes — the Maldivian government has made solar a national priority. As one of the world's most climate-vulnerable nations (average elevation 1.5m above sea level), the Maldives has strong motivation to reduce fossil fuel dependence and carbon emissions. Key programs include: the Scaling Up Renewable Energy Program (SREP) electrifying outer island atolls with solar; STELCO's net metering scheme for urban installations; ADB and Green Climate Fund grants for island solar projects; and a national target of 70% renewable energy by 2030. The Maldives Energy Authority (MEA) oversees these programs.

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