Payback Analysis Northern Ireland
This payback is based on 100% sell back to the grid. If the power is used from the turbine onsite rather than exporting to the grid, the payback period will be much less than quoted.
| Estimated Annual Turbine Yield | |
| Estimated annual kWh output from turbine 225kw | 411,000 |
| Estimated Sell Back to Grid | 100% |
| Annual Income Breakdown from 225kw Wind Turbine | |
| Annual Sell to Grid | £22,563.900 |
| ROCs earned | £74,785.560 |
| TOTAL ANNUAL REVENUE (Gross Annual Income) | £97,349.460 |
| Return On Investment (ROI) | |
| Estimated cost of project | £500,000 |
| Simple Payback Period (Years)(contract NIE 25 years) | 5.2 |
| Calculations based on the Following Assumptions | |
| Current ROC (Renewable Obligation Certificate) Valuet | £45.49 |
| Export Rate / kwh (Current rate payable to Generator by NIE) | £0.055 |
| Import Rate / kwh (Current purchase price from NIE) | £0.143 |
| Average Wind Speed at Hub | 6m/s |
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