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.
$280 - $580 per kWh (installed cost), though of course this will vary from region to region depending on economic levels. For large containerized systems (e. , 100 kWh or more), the cost can drop to $180 - $300 per kWh.
Of the two methods of combining solar and battery energy storage, DC and AC coupling, the DC coupled approach holds unique promise for commercial and industrial (C&I) and distributed generation (DG) sized alternative energy projects - projects ranging in size from.
As of most recent estimates, the cost of a BESS by MW is between $200,000 and $420,000, varying by location, system size, and market conditions. This translates to around $150 - $420 per kWh, though in some markets, prices have dropped as low as $120 - $140 per kWh.
This guide provides a transparent BESS cost breakdown for 2026, moving beyond module prices to illuminate the full project lifecycle costs, empowering you to budget with confidence. Let's start with the headline figure.
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.
All products are built with long-lasting LiFePO4, featuring over 6,500 cycles and at least 10 years of warranty. Our systems, certified to UL, IEC, CE, MSDS, UN38. 3 standards and more, offer both off-grid and hybrid compatibility to empower households in single-family homes.
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.