Hybrid PV + BESS
Optimize the sizing and dispatch of co-located solar and battery storage systems to maximize combined returns.
Key Capabilities
Optimizing Co-Located Solar and Battery Storage Systems
Hybrid PV+BESS projects combine solar generation with battery energy storage to maximize revenue capture and grid flexibility. Co-located systems can reduce interconnection costs, share balance-of-plant infrastructure, and optimize the Investment Tax Credit (ITC) under the Inflation Reduction Act (IRA). For solar developers expanding into storage, hybrid modeling requires careful integration of solar production profiles, battery dispatch logic, and market-specific revenue stacking.
The OPTIMUS platform provides comprehensive analytics for hybrid PV+BESS sizing, dispatch optimization, and financial modeling.
DC-Coupled vs AC-Coupled Architecture
The choice between DC-coupled and AC-coupled architectures significantly impacts project economics. DC-coupled systems route excess solar power directly to the battery before the inverter, reducing conversion losses and enabling efficient clipping recapture. AC-coupled systems add a separate inverter for the battery, offering flexibility for retrofit applications but with higher losses.
OPTIMUS models both architectures, quantifying the impact on round-trip efficiency, clipping recapture potential, and levelized cost of energy (LCOE). Solar developers can evaluate the optimal configuration for their specific site, irradiance profile, and market structure.
Clipping Recapture Analysis
Utility-scale solar farms often overbuild DC capacity relative to inverter capacity to maximize output during shoulder hours. During peak irradiance, excess DC power is "clipped" and lost. In a DC-coupled hybrid, this clipped energy can be stored in the battery and discharged during the lucrative evening ramp.
OPTIMUS calculates the exact volume of clipping recapture across the project life, accounting for seasonal irradiance variation, degradation, and inverter thermal limits. This analysis enables developers to optimize the DC/AC ratio and battery size to maximize combined returns while satisfying ITC and PTC requirements.
ITC and PTC Constraint Modeling
The Inflation Reduction Act (IRA) offers enhanced tax credits for hybrid projects that meet domestic content and prevailing wage requirements. Standalone storage projects can qualify for the ITC if charged by renewable energy at least 75% of the time. Hybrid projects face additional complexity: the solar and storage components may have different tax treatment.
OPTIMUS models ITC and PTC constraints, ensuring dispatch strategies comply with eligibility requirements. The platform evaluates the trade-off between tax credit optimization and revenue maximization, supporting developers in structuring bankable hybrid projects that meet both investor and lender expectations.