NLR's Distribution Grid Integration Unit Cost Database contains unit cost information for different components that may be used to integrate distributed solar photovoltaics (PV) onto distribution systems.
The Wellington Battery Energy Storage System project consists of a grid-scale BESS with a total anticipated discharge capacity of 500MW and a storage capacity of 1,000MW hours. Fluence Energy had the contract to design, supply, construct and commission the installation.
This all in one energy storage cabinet features IP54 outdoor protection, Grade A LiFePO₄ batteries with over 6000 cycles, and high power output up to 125 kW, making it ideal for industrial and commercial applications.
The fully installed turnkey system cost-what you actually pay to have an operational BESS-typically ranges from $360 to $690 per kWh for commercial-scale projects. This 2-3x multiplier from module cost to installed cost is where the real budgeting work begins.
All-in BESS projects now cost just $125/kWh as of October 2025 2. With a $65/MWh LCOS, shifting half of daily solar generation overnight adds just $33/MWh to the cost of solar.
Increasing large‑scale solar capacity additions across China, India, Japan, and Southeast Asia, supported by government‑backed renewable targets and utility‑scale tenders, are driving demand for high‑efficiency PV inverters to ensure grid compliance, reliability, and optimized.
The project is earmarked to deliver 150MWp of solar PV power integrated with a 50MW battery energy storage system (BESS) to the national grid over a 25-year term.
E-START ENERGY delivers utility-scale BESS for frequency regulation, peak shaving, electricity market participation, and grid-side solutions. Request a free consultation and get a custom quote for your project — from 1MW to 500MW+.
Have questions about grid-scale energy storage, frequency regulation systems, peak shaving solutions, or grid interconnection technology? Reach out – our energy storage experts are ready to assist.