Helios Nexum™ - Solar & Battery Storage Financial Model

Description
Helios Nexum™ is an Excel financial modelling framework built for hybrid solar photovoltaic and battery energy storage system (BESS) projects. 

Unlike traditional static models, it integrates an 8760-hour energy simulation engine directly with a structured project finance framework — enabling analysts to evaluate how real operational behaviour drives investment returns.

The model simulates hourly solar generation, battery charge and discharge dispatch, grid export constraints, and curtailment scenarios, then translates those outputs into a full suite of financial metrics: IRR, NPV, DSCR, LLCR, CFADS, and revenue breakdowns. A dedicated capital structure module supports debt sizing, mezzanine, and equity allocation.

The Pro Edition connects live to leading energy data sources — including PVGIS, ENTSO-E, Elexon, NESO, and EIA — for location-specific solar irradiance, electricity market prices, and grid data, eliminating manual data entry and ensuring inputs reflect current market conditions.

Designed for renewable energy developers, infrastructure funds, project finance professionals, and energy consultants, Helios Nexus™ enables rigorous scenario testing across technical and financial assumptions — including solar-only versus hybrid comparisons and curtailment impact quantification.

Built to standard, the model follows professional financial modelling best practices with a transparent layered architecture separating inputs, calculations, and outputs.

Requires Microsoft Excel 365 or Excel 2021. No external software dependencies.