How Much Does a Solar Storage Battery Cost and What You
The cost of solar storage batteries typically ranges from $5,000 to $7,000 for residential units, while commercial systems can cost between $10,000 to $30,000 or more.
Lithium-ion batteries, such as those using Lithium Iron Phosphate (LiFePO4), are more expensive than lead-acid batteries but offer higher efficiency, longer lifespan, and better energy density. For instance, a 10 kWh lithium-ion battery typically costs $7,000–$10,000, while equivalent lead-acid options range from $2,000–$5,000.
Battery storage costs have evolved rapidly over the past several years, necessitating an update to storage cost projections used in long-term planning models and other activities. This work documents the development of these projections, which are based on recent publications of storage costs.
Government and utility incentives significantly reduce upfront costs. Federal tax credits, such as the Investment Tax Credit (ITC), cover 30% of the system's cost when paired with solar panels. Local rebates can add $500–$1,000 in savings depending on the state.
Federal tax credits, such as the Investment Tax Credit (ITC), cover 30% of the system's cost when paired with solar panels. Local rebates can add $500–$1,000 in savings depending on the state. For example, California's Self-Generation Incentive Program (SGIP) offers rebates for residential battery storage, further lowering initial expenses.
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