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 the island's energy needs. Battery storage is included at the Reverlast standard of 3 MWh per MWp, fully included in the PPA rate.
Capacity factor and yield use NASA POWER satellite irradiance (1° grid, nearest cell), converted to an optimal tilt (× [1 + 0.0034 × latitude]), a conservative single-axis tracking gain (+8%, ×1.08), and an 85% performance ratio (the 80% land-based IEC 61724-1 baseline, plus 8% bifacial pontoon-albedo and ocean-cooling gains, minus 3% salt-soiling losses).
Running on imported diesel, your electricity currently costs an estimated $—/kWh to generate. Under the PPA you buy that same energy from Reverlast at this fixed rate per kWh — Reverlast funds, builds, and operates the system, so there is no upfront capital on your side and your cost per kWh drops from day one.
The chart shows the cost of electricity per kWh over time. With Reverlast, that cost is fixed for the full duration of the agreement. The shaded area between the lines is the saving you keep. Use the diesel cost field above to explore different scenarios.
Solar handles base load and substantially reduces reliance on imported diesel. During prolonged cloudy weather or periods of peak demand, existing diesel generators provide backup power. Energy security is never compromised.
CO₂ is calculated using the IPCC Tier 1 factor of 2.68 kg per litre of diesel. Every litre replaced by solar means fewer fuel shipments and less exposure to global fuel-price volatility.
Solar irradiance (GHI, kWh/m²/yr) is sourced from the NASA POWER satellite dataset (1° global grid) for every location, snapped to the nearest grid cell. Capacity factor (CF) is: GHI × tilt gain × tracking gain × performance ratio ÷ 8,760 hours. The tilt gain (1 + 0.0034 × latitude) converts horizontal irradiance to an optimally tilted plane; single-axis tracking adds a conservative +8% (×1.08); and the performance ratio is 85% (the 80% land-based IEC 61724-1 baseline, plus 8% bifacial pontoon-albedo and ocean-cooling gains, minus 3% salt-soiling losses). This CF and the GHI source are shown in the system dimensions card above.
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, financing, and decommissioning after 25 years) spread across every kilowatt-hour the panels will ever generate. The result is a fixed cost per kWh that is lower than your current cost to generate electricity from diesel, 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.
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Reverlast floating solar · based on IEC 61724-1 and IPCC AR6 parameters · illustrative model only