The average cost of a fully installed standalone 12.5 kWh solar battery is $18,791 (or $13,154 after claiming the 30% tax credit), according to the latest datafrom the National Renewable Energy Laboratory (NREL). H. While solar batteries come in many shapes, sizes, and chemistries, a handful have emerged as the best batteries of 2023and the most sought-after by homeowners. The chart below lists t. There are a handful of factors that influence the price of solar batteries, but perhaps the greatest reason they are expensive is simply because residential-scale batteries are a new techno. Solar battery prices are on a similar trajectory as 4K TVs. However, there are far more factors that influence the cost of a battery project than there are for installing a TV. Beyond the c. Whether solar battery is worth the cost in 2023 is totally up to you and your energy goals. If you experience frequent or long-lasting power outages, then having battery storage for backu.