Why it matters
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Total over 25 years: $—
Illustrative model, not a feasibility study · based on IEC 61724-1 and IPCC AR6 parameters
The floating solar array is sized to meet your target solar share from available irradiance. Battery storage is included at the Reverlast standard of 3 MWh per MWp (3-hour reserve), fully included in the LCOE+S and PPA rate.
The total amount the island pays Reverlast over the full contract term - in exchange for all solar electricity produced. Rate = 1.8 × LCOE+S, where LCOE+S levelises all costs (solar, BESS, shipping, OPEX, refurbishment, decommissioning) over NPV-discounted energy. No upfront capital required.
The island currently generates electricity by burning diesel at $—/kWh. Under the PPA, it pays only the solar rate - the difference is pure savings, growing each year as diesel prices rise.
Solar handles base load and reduces diesel consumption dramatically. During prolonged cloudy weather, diesel generators can still be used to produce power - energy security is never compromised.
Calculated using the IPCC Tier 1 factor of 2.68 kg CO₂ per litre of diesel combusted - equivalent to taking — passenger cars off the road every single year.
The PPA rate is already below the island's diesel electricity cost from day one - savings begin immediately, with no escalation assumed. The gap remains stable over the full term. Toggle to the +3%/yr scenario to see the upside if diesel prices rise.
Every litre eliminated is one fewer fuel shipment - reducing the island's exposure to global oil price volatility. At $—/L today, this diesel was costing $—/year to procure.
The 80% efficiency factor is an industry standard - it accounts for the unavoidable real-world losses from heat, wiring resistance, and inverter conversion. Solar irradiance is pre-filled from Solargis satellite data for known islands, or NASA POWER (1-degree grid) for custom locations, and drives system sizing directly.
Island diesel generators produce roughly 3.2 kWh for every litre burned - that's their typical conversion efficiency under real operating conditions. Each litre this system replaces is fuel that never needs to be ordered, shipped, stored, or handled.
The PPA rate is derived from the full project cost - equipment, shipping, O&M, and financing - spread across every kilowatt-hour the panels will ever generate. The result is a fixed price per kWh that is substantially lower than what the island currently pays for diesel-generated electricity, so savings begin from day one of the contract.
2.68 kg/L is the IPCC's published Tier 1 emission factor for diesel combustion - the same number national governments use when reporting to the UN. It's a conservative, universally accepted figure.
Battery keeps the grid stable at night and during cloudy stretches. Reverlast uses a standard 3 MWh per MWp - enough for overnight coverage without over-building storage. This is the Reverlast platform standard, fully included in the PPA rate.
Solar covers the floating platform, modules, inverters, and grid tie-in at $1,200/kWp. Battery storage (BESS) adds $120,000 per MWh, locked at Reverlast's standard 3 MWh per MWp. These figures reflect current procurement pricing and include all associated costs over the full project life.
We measure distance to the nearest of Rotterdam, Shanghai, or Mumbai - the three main solar equipment export hubs. Islands close to a port pay around $200k per MWp in freight; the most remote locations approach $1M per MWp. Rounded to the nearest $100k.
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Reverlast floating solar · based on IEC 61724-1 and IPCC AR6 parameters · illustrative model only