HelioExpect
    Long-term yield

    P50, P75, P90 — investor-ready.

    Bankable forecasts for project finance, PPA structuring, capacity planning, and annual budgeting. Site-specific climate models extended to multi-year horizons with rigorous validation.

    Short-term forecasting
    Long-term yield · P50 / P75 / P90
    P50
    Base case
    P75
    Conservative
    P90
    Downside
    25-year yield projection (GWh/yr)
    25yr
    Maximum horizon
    P90
    Confidence bands
    12mo
    Rolling budget refresh
    CMIP6
    Climate model ensembles
    Core capabilities

    What long-term forecasting delivers.

    Same site-specific climate model that powers our 15-minute forecasts, extended for bankability and budgeting.

    Multi-Year Yield Assessment

    P50/P75/P90 yield distributions across 1-25 year horizons with full confidence bands and underlying assumptions documented.

    Site-Specific Climate Modeling

    CMIP6 ensembles + downscaled regional forecasts + on-site operational data combined into a single site-tuned model.

    Bankability Reports

    IFC/MIGA-aligned output format with full methodology appendix. Designed to drop into lender underwriting and PPA structuring packages.

    Portfolio-Level Aggregation

    Per-site and per-portfolio rollups for asset owners managing multi-plant portfolios. Hybrid solar + wind + BESS supported.

    Historical Backcasting

    Validate against past operational data. Each scenario ships with published MAE so reviewers can assess fit at a glance.

    Continuous Recalibration

    Monthly refresh of the 12-month outlook. Quarterly refresh of multi-year outlooks. Always anchored to the latest operational telemetry.

    Use cases

    Built for every horizon.

    Bankability for Project Finance

    Underwriting-ready yield reports with P50/P75/P90 confidence bands, methodology appendix, and historical backcast performance.

    Budgeting and Energy Trading Plans

    12-month rolling outlooks for CFO planning and trading desks. Monthly recalibration keeps the budget aligned with the latest operational data.

    Climate Risk + ESG Scenario Modeling

    Compare yield outcomes under multiple climate scenarios. Designed to plug into ESG disclosures and climate risk reviews.

    Get started

    See a P50/P75/P90 yield on your site.

    Forecast renewable generation for the next 12 months — and the next 25 years. Send us coordinates and we'll return a sample bankability report.

    See short-term forecasting