Why it matters
Pre-filled where we have data - adjust any value to match your local reality.
We do not have pre-filled data for this location. Fill in the fields below with accurate local information - the more precise the data, the more accurate your savings estimate.
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, on-island electricity costs an estimated $—/kWh to generate. Under the PPA the operator buys that same energy from Reverlast at this fixed rate per kWh — Reverlast funds, builds, and operates the system, so there is no upfront capital for the operator and the 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 the island keeps. 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. At this scale, the displaced diesel is fuel that no longer has to be imported, shipped to the island, stored, and burned each year — cutting the number of fuel deliveries and the operation's exposure to fuel-price and supply shocks.
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 "estimated current cost" is built from the delivered diesel price and how much fuel the generators burn per kWh (default 0.31 L/kWh, editable). It is a deliberately conservative, fuel-only figure: it captures the largest and most volatile part of diesel electricity but excludes generator capital, maintenance, staffing, and distribution losses — so the true cost of diesel power is typically higher than shown.
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 the island's current diesel cost above, 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.
Enter your email and we'll send you this full report as a PDF - along with a link to book a free 30-minute call with a Reverlast representative.
Reverlast floating solar · based on IEC 61724-1 and IPCC AR6 parameters · illustrative model only