Generally speaking, whole-home backup will require multiple batteries to accomplish and will depend on your unique power needs. In contrast, a lead-acid battery can manage up to 1,000 cycles and generally lasts around 5 years or less.ģ. Lithium-ion batteries can withstand as many as 3,000 cycles, lasting up to 15 years or more. Lithium-ion batteries, like the Tesla Powerwall, are favored for solar storage due to their extended cycle life and user-friendliness compared to alternatives like lead-acid batteries (which we do not offer).Ĭycle life refers to the number of charge-discharge cycles a battery can undergo before its capacity significantly diminishes. The longevity of solar batteries hinges on various factors, beginning with the battery type and chemical makeup Different battery chemistries have distinct lifespans. If your utility has time-of-use (TOU) rate structures where the energy can cost significantly more during high-demand periods at night, or if you don’t receive the benefit of net-metering, the economical benefit of solar batteries can be considerable. As battery prices continue to decline, retrofitting with a battery could be a viable future option if increased security through energy storage becomes a greater priority. The reassurance of a dependable backup energy source for critical loads can make this investment particularly valuable. At this time, New Mexico’s 10% Solar Market Development Tax Credit only applies to home solar system costs (not batteries).Įvaluating whether the added battery expense is worthwhile involves considering factors such as the frequency of power outages, your desire to rely less on the grid and more on clean energy, as well as what you could stand to lose during a prolonged outage. Fortunately, as of 2023, you can benefit from the 30% Federal Investment Tax Credit, significantly reducing the price. Consider the Tesla Powerwall, offering around 13.5 kWh of usable capacity, which translates to an approximate cost of $18,000, installed. The average cost for a storage system is just below $1,400 per kWh. Below, we address common questions that individuals considering energy storage alongside their solar systems often have: While the benefits of adopting energy storage are evident, you may still have some lingering inquiries before making this investment. However, by incorporating energy storage, you can keep your essential appliances powered, drawing upon the stored energy within the battery to maintain electricity supply during such times. Traditional grid-tied solar systems are designed to disconnect during grid outages to prevent the back-feeding of power, which could pose risks to grid maintenance workers. The escalating frequency of severe weather events, coupled with aging power grids and heightened wildfire risks, has led to more frequent power outages across the nation, including here in New Mexico. The integration of energy storage with solar also holds significant advantages in terms of resilience during power disruptions. This stored energy can then be utilized to power your home during nighttime hours, reducing your reliance on the conventional utility grid. The combination of solar panels and energy storage allows you to operate in a self-consumption mode, allowing you to store surplus energy generated during the day in the battery. Enhancing your solar energy system's performance, whether by integrating a battery with a new solar setup or adding one to an existing system, offers a way to optimize your clean energy utilization both during the day and into the night.
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