Solar BESS Feasibility Study Checklist for Project Developers and EPC Contractors
What should a solar BESS feasibility study include?
A complete assessment should address the following areas:
1. Solar resource and site assessment
Review the site location, solar irradiation, usable land, shading, terrain, expected generation and electrical infrastructure.
2. Battery sizing and configuration
Define the required battery power in MW, energy capacity in MWh, discharge duration, usable energy, efficiency, degradation assumptions and charging strategy.
3. Grid integration
Evaluate the point of interconnection, transformer capacity, export limits, protection, power quality and applicable utility requirements.
4. CAPEX and financial analysis
Estimate the cost of battery equipment, PCS, civil works, electrical systems, controls, installation and commissioning. Assess potential savings or revenue using transparent assumptions.
5. Safety and lifecycle planning
Consider fire protection, emergency response, maintenance, degradation, augmentation and end-of-life management.
6. DPR and engineering documentation
Prepare the agreed feasibility report, technical specifications, cost estimates, risk register and implementation plan.
Why independent technical assessment matters
A battery's nominal energy capacity does not automatically represent the energy that can be delivered to a load. Conversion losses, operating limits, auxiliary consumption and degradation affect usable output and project economics.
The feasibility study should therefore compare alternative configurations and test how financial results change when electricity tariffs, battery prices, efficiency and operating assumptions vary.
For further technical guidance, refer to the US Department of Energy's solar and storage integration resource and the MNRE energy storage policy portal.
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Read the full technical guide: Solar BESS Feasibility Study — Technical, Financial & Design Guide
