With the advancement of technology, the energy storage sector is experiencing rapid growth. In this context, there are many myths and misconceptions that need to be addressed. We have interviewed energy storage system (ESS) and battery suppliers to find out which energy storage myths are worth debunking. Here are their opinions.
Myth: Lithium-Ion Batteries Are the Best Solution for Stationary ESS
Brad Dore, Director of Marketing at EnerVenue, believes that the notion that lithium-ion batteries are the best for stationary energy storage systems (ESS) is mythical and requires further attention. One of the major drawbacks of lithium-ion batteries in stationary applications is their limited lifespan. These batteries degrade relatively quickly, sometimes after only 2000 cycles. In the case of energy storage, where longevity is usually more important than in standalone power applications, this degradation can be a serious issue, requiring costly and relatively frequent replacement.
Lithium-ion batteries are also prone to thermal runaway and fire hazards in stationary energy storage applications. The same high energy density that makes lithium-ion batteries ideal for portable devices becomes a disadvantage in stationary applications. The consequences of a fire in an energy storage installation can be catastrophic for property, safety, and the environment.
Another myth regarding lithium-ion batteries for stationary energy storage is their environmental friendliness. Although they may seem environmentally friendly due to their association with electric vehicles, the production of lithium-ion batteries involves intensive mining and manufacturing processes. Lithium mining can have harmful effects on local ecosystems and water resources. Additionally, recycling lithium-ion batteries is difficult and can lead to the release of harmful substances into the environment.
Furthermore, the increasing demand for lithium-ion batteries driven by the growth of the electric vehicle market has resulted in a shortage of lithium resources. This scarcity has led to increased costs, making lithium-ion batteries less economically viable for stationary energy storage projects. In contrast, new alternative energy storage systems such as metal-hydrogen, sodium-ion, and gravity-based systems offer promising solutions with longer lifespans, higher safety, and less environmental impact.
Myth: Bigger Capacity is Better!
Magnus Asbo, Director of Technical Marketing at SolarEdge Technologies, believes that when it comes to energy storage, size is not the most important factor to consider. When choosing a battery system, homeowners and installers should focus on several key aspects. Here’s why bigger is not always better:
1. Power: Power is what determines how many and what size devices the battery can power. Even if a battery can store a lot of energy, it’s important for it to be able to generate sufficient power to meet household needs.
2. Efficiency is key: High capacity is only useful if the battery is efficient. In some cases, bigger batteries may require additional capacity just to compensate for their lower efficiency. It’s important for every watt stored to be crucial.
3. Safety and build quality: Has the battery been manufactured by a reputable producer with expertise in quality? Has it undergone rigorous testing according to safety standards such as UL9540A? Does it have a warranty of at least 10 years without hidden limitations regarding cycles or discharge? Ensuring that the chosen battery is reliable and safe is crucial for long-term satisfaction.
4. Ensure the battery is part of an energy ecosystem: It’s important to choose a battery and inverter from the same manufacturer that work together seamlessly as part of an integrated energy ecosystem. This provides excellent support, improves reliability, increases efficiency, and enhances the overall battery experience.
Myth: Batteries Are Too Expensive!
Vinnie Campo, co-founder and CEO of Haven Energy, states that the biggest myth they encounter is the belief that installing a home battery system is prohibitively expensive. Home battery prices have dropped by 89% over the past decade, and it is projected that they will decrease by nearly half by 2030. Homeowners can now apply for a 30% federal tax credit for energy storage installation, and potentially receive up to $6,500 in reimbursement for electrical system upgrades under the Inflation Reduction Act.
At the state level, homeowners can further reduce the cost of a new home battery system. California homeowners can take advantage of the Self-Generation Incentive Program (SGIP), which offers a $1,750 discount for a single-battery system (for eligible households). For a double-battery system, they can receive a $3,500 rebate.
Once installed, the battery can also save homeowners money. In areas with time-of-use rates (most of California), homeowners can charge their batteries during lower energy price periods and use the stored energy during higher price periods. This can result in daily energy bill savings of $2-5. A single battery installation can save homeowners $800 to $1,600 annually on energy bills, thus reducing the cost of owning the battery.
Lastly, homeowners can enroll their battery system in a virtual power plant (VPP), which allows them to earn additional income by participating in demand response programs. Haven’s VPP is part of California’s demand response incentive programs. When there is high energy demand and the grid is facing issues, Haven can utilize its customers’ batteries to export stored energy and help balance the grid, paying them at least $125 annually. As demand response programs improve, we expect participation incentives to increase.
FAQ:
1. What are the drawbacks of lithium-ion batteries in stationary applications?
A: Lithium-ion batteries have a limited lifespan and are susceptible to thermal runaway and fire hazards in stationary energy storage applications.
2. Are lithium-ion batteries environmentally friendly?
A: The production of lithium-ion batteries involves intensive mining and manufacturing processes, and the recycling of these batteries is difficult and can lead to the release of harmful substances into the environment.
3. What are alternative energy storage systems?
A: Alternative energy storage systems include metal-hydrogen, sodium-ion, and gravity-based systems.
4. Is a bigger battery capacity better?
A: The size of the battery is not the most important factor to consider. It’s important for the battery to generate sufficient power, be efficient, safe, reliable, and part of an energy ecosystem.
5. Is installing a home battery system expensive?
A: Home battery prices have significantly decreased, and there are tax credit and reimbursement programs that can greatly reduce installation costs. The battery can also save homeowners money through lower energy prices and participation in demand response programs.
The source of the article is from the blog karacasanime.com.ve