With prices starting under $500 for basic models and premium units reaching $2,300, there's an option for every budget and power need. Pro Tip: Look for suppliers offering extended warranties - a 5-year coverage typically adds just 3-5% to the base price but significantly improves. The cost per MW of a BESS is set by a number of factors, including battery Understanding the Sofia outdoor energy storage power supply cost requires balancing upfront investment with long-term operational savings. Prices for Chinese project will be prices for TOPCon modules instead of PERC from April 2024 onwards. BC module prices in China will be added. Every month we publish a current price index on the development of wholesale prices of solar modules. In doing so, we differentiate between the main technologies available on the market.