With electric vehicle (EV) sales projected to reach 17 million globally in 2025, according to the International Energy Agency (IEA), EV ownership is no longer a niche trend—it’s mainstream. As more drivers transition to electric, a common question arises: What’s the best way to charge an EV? To answer this, we consulted energy experts to uncover strategies that maximize battery life, minimize costs, and support a sustainable energy grid. Whether you’re a new EV owner or a seasoned driver, these five expert-backed tips will optimize your charging experience in 2025.
1. Prioritize Level 2 Home Charging for Daily Convenience
Level 2 home chargers, operating at 240 volts, remain the gold standard for daily EV charging. These chargers deliver 25–40 miles of range per hour, making them ideal for overnight charging. In 2025, 68% of U.S. EV owners rely on Level 2 chargers at home, per a BloombergNEF report, due to their balance of speed and affordability.
Why It’s Best: Level 2 chargers are faster than Level 1 (120V) chargers, which only add 4–5 miles per hour, and they’re gentler on batteries compared to DC fast chargers. Plus, installation costs have dropped to $500–$1,500, with 30% federal tax credits available under the Inflation Reduction Act.
Pro Tip: Invest in a smart Level 2 charger, like those from ChargePoint or Tesla, to schedule charging during off-peak hours and track energy usage via mobile apps.
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2. Limit DC Fast Charging to Protect Battery Health
DC fast chargers, capable of delivering 50–350 kW, are a lifesaver for road trips, adding 100–200 miles of range in 20–30 minutes. However, frequent use can accelerate battery degradation due to high heat and voltage stress. A 2024 study by the University of California found that EVs using fast chargers more than twice weekly showed a 2–3% capacity loss annually.
Recommendation: Reserve DC fast charging for long drives or emergencies, limiting usage to 1–2 times per week. For daily needs, rely on Level 2 chargers at home or work.
Pro Tip: Use fast chargers with active cooling systems to minimize heat buildup, and avoid charging to 100% on these stations.
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3. Optimize Costs with Off-Peak Charging
Charging during off-peak hours—typically late at night or early morning—offers multiple benefits: lower electricity rates, reduced grid strain, and better integration with renewable energy sources. In 2025, utilities in states like California and Texas offer time-of-use (TOU) rates, with off-peak prices as low as $0.10–$0.15/kWh compared to $0.30–$0.50/kWh during peak hours.
How to Do It: Smart chargers, such as NextG Power or Wallbox, integrate with utility schedules to automate charging during low-cost periods. Apps can also notify you of optimal charging times based on local rates.
Why It Matters: Off-peak charging can save you 20–40% on energy costs annually while supporting grid stability as renewable energy adoption grows.
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4. Maintain Battery Health with 20%–80% Charging
Battery experts universally recommend keeping your EV’s charge level between 20% and 80% for daily use. Charging to 100% or letting the battery drop to 0% regularly can reduce its lifespan by up to 20% over five years, according to a 2024 Battery University report. Most modern EVs, like the Tesla Model Y or Ford Mustang Mach-E, allow you to set charge limits via in-car settings or mobile apps.
Practical Steps:
Set a charge cap at 80% for daily driving.
Only charge to 100% before long trips.
Avoid letting the battery fall below 20% to prevent deep discharge cycles.
Why It Matters: This strategy preserves battery capacity, ensuring your EV maintains range and performance over time.
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5. Embrace Solar Charging for Sustainability and Savings
Pairing your EV with a solar energy system is a game-changer in 2025. With solar panel costs dropping to $2.50–$3.50 per watt and battery storage prices at $200–$400/kWh, solar-plus-storage systems are more affordable than ever. A typical 6 kW residential solar system can generate enough energy to charge an EV for 10,000–15,000 miles annually, slashing fueling costs to near zero.
Bonus: Adding a battery storage system, like the Tesla Powerwall or NextG Power batteries, allows you to store solar energy for nighttime EV charging, maximizing self-sufficiency. In 2024, 15% of U.S. EV owners used solar charging, a number expected to double by 2027, per SEIA.
Why It Matters: Solar charging reduces your carbon footprint and shields you from rising electricity rates, offering long-term savings and energy independence.
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Summary: Charge Smarter, Drive Greener
Charging your EV efficiently in 2025 is about balancing convenience, cost, and sustainability. By prioritizing Level 2 home charging, limiting fast charging, using off-peak hours, maintaining optimal battery levels, and exploring solar solutions, you can enhance your EV’s performance and contribute to a cleaner energy future. As the EV market grows, staying informed about charging best practices will save you money and maximize your driving experience.
Ready to Upgrade Your EV Charging? Discover cutting-edge Level 2 chargers, smart energy apps, and solar-plus-storage solutions from NextG Power.Contact us today.
For more insights on EV trends, check out our latest blogs or visit the U.S. Department of Energy’s EV Resources.
Sources: IEA, BloombergNEF, University of California, Battery University, SEIA, U.S. Department of Energy.