Chargerhelp’s Annual Report Exposes EV Charging Reliability

If you've ever pulled up to an EV charger only to find it offline, you know the frustration that makes range anxiety feel very real. That's exactly why the Annual Reliability Report by Chargerhelp the State of EV Charging exists, to give drivers and operators a clear, data-driven picture of which networks actually work when you need them.

Per Chargerhelp's methodology, the report tracks over 4,500 public charging stations across the United States, logging more than 1.2 million individual charging sessions. What they found about network uptime, failure patterns, and repair times might just change how you plan your next road trip.

Quick Answer

The Annual Reliability Report by Chargerhelp tracks uptime across major EV charging networks. Average public charger reliability sits around 78% as of 2026. Some networks hit over 95% uptime.

Others struggle below 60%. The report identifies the most and least reliable stations nationwide. Use it to plan routes that avoid known problem areas.

The Context: Why Chargerhelp's Annual Reliability Report Matters

Public EV charging has a trust problem. You can't always count on a station being operational when you arrive. That uncertainty holds back adoption more than range anxiety ever did.

Chargerhelp stepped in to fix the information gap. Their annual report doesn't just publish raw uptime numbers. It digs into the patterns behind failures, from payment system glitches to connector damage to outright power loss.

For drivers, that means knowing which networks to prioritize. For operators, it means having a benchmark to measure against.

The report covers the full spectrum of public charging. That includes DC fast chargers along interstate corridors and Level 2 units at shopping centers and workplaces. Tesla's Supercharger network gets its own analysis, typically outperforming CCS-based networks by a wide margin.

But the gap is shrinking as new hardware and better maintenance practices take hold.

What makes this report stand out is the verification process. Chargerhelp doesn't just pull data from network APIs, which can overstate availability. They cross-check with field visits, user-submitted reports, and real-time test charges at sampled locations.

That methodology catches the difference between a station that reports "available" on an app and one that actually delivers power when you plug in.

The timing matters too. With the federal NEVI program pushing billions into new charging infrastructure, reliable data is more valuable than ever. Tax dollars are funding stations that need to perform.

The report helps state planners and utility companies direct money toward solutions that work, not just hardware that checks a box.

How the Report Was Built: Data Sources, Sample Size, and Methodology

Understanding the methodology helps you trust the numbers. Chargerhelp publishes their approach alongside the results, which is rare in this space.

The research team monitors roughly 4,500 unique charging locations. That covers all major networks including Tesla Supercharger, Electrify America, ChargePoint, EVgo, Blink, and Shell Recharge. Stations are selected to represent geographic diversity: urban cores, suburban areas, rural highway stops, and remote corridors.

Data collection happens through three channels:

• Network API polling, Automated checks every 15 to 60 minutes to see if a station reports as online and available
• User-submitted reports, Drivers can flag a station as broken, slow, or unreliable through the Chargerhelp platform
• In-person verification drives, Staff physically visit a rotating sample of stations each month to confirm status

This triple-check system catches the gap between what networks claim and what drivers actually experience. A station might report 100% uptime through its API while being down for three days because nobody flagged it. Field verification catches those silent failures.

The report analyzes over 1.2 million individual charging sessions per year. That scale means the data is statistically robust enough to draw conclusions about individual networks and regional performance.

Methodology matters because uptime isn't a simple number. Chargerhelp defines uptime as the percentage of time a station is both powered on and capable of delivering a charge. That excludes scheduled maintenance windows but counts unplanned outages, broken connectors, and payment failures.

It's a stricter definition than some networks use internally, which explains why reported uptime in the study often runs 10 to 15 points lower than what networks advertise.

The Numbers That Matter: Uptime, Failure Rates, and Repair Times

The headline figure from the most recent report is sobering. Average public charger uptime across all networks sits at approximately 78%. That means roughly one in five charging sessions will encounter some kind of problem.

Here's how the numbers break down by network tier:

The repair time data is just as important as uptime. A network that fixes a broken station in 24 hours is far more useful than one that takes two weeks, even if their uptime percentages look similar on paper.

Tesla's network dominates because of vertical integration. They control the hardware, software, and maintenance. When a Supercharger fails, a Tesla technician is dispatched quickly.

There's no third-party contractor, no blame between the station operator and the hardware manufacturer.

CCS networks face a fundamentally different challenge. Electrify America might have ABB or Signet chargers at one location and Delta units at another. A technician needs different training, spare parts, and diagnostic tools for each brand.

That complexity drives repair times up and reliability down.

Failure causes break down into a few predictable categories:

• Power module failures are the most common cause of total station outage, accounting for about 35% of downtime
• Payment system problems affect roughly 25% of failed sessions, where the charger works but won't accept a card or start a session
• Connector damage from improper handling or vandalism causes about 20% of issues
• Network connectivity failures account for the remaining 20%, where the charger loses its internet connection and refuses to operate

Cold weather compounds every category. Chargerhelp's data shows a 5-8% drop in reliability during winter months across all networks. Chargers that run fine at 70°F develop power module faults, stuck connectors, and screen failures when temperatures drop below freezing.

Network-by-Network Breakdown: Who Stood Out and Who Struggled

Every network has a different story in the latest report. Some are making real progress. Others are stuck with aging hardware and slow repair cycles.

Tesla Supercharger continues to set the standard. Their V3 and V4 cabinets deliver uptime in the 95-97% range. The network benefits from constant monitoring and a dedicated service fleet.

Tesla's decision to open the network to non-Tesla vehicles through the NACS connector creates new pressure. More mixed traffic means more potential for connector damage and payment friction, but early data suggests the reliability impact has been minimal so far.

Electrify America shows the most improvement year over year. Their uptime climbed from the mid-60s to the low 80s in the latest report. That's still below where it needs to be, but the trajectory is positive.

They've invested heavily in replacing early-generation hardware and expanding their maintenance team. Their 350 kW units remain more prone to failure than 150 kW units, so sticking to the slower stalls when available is still the smarter play.

ChargePoint delivers solid reliability in the 80-85% range, but their network is different from the others. Most ChargePoint stations are owned and maintained by the property host, not by ChargePoint itself. A malfunctioning station at a hotel or parking garage depends on the host to call for service.

That introduces variable response times. Some hosts fix things within a day. Others let a station sit broken for months.

EVgo sits in the middle of the pack at roughly 75-80% uptime. Their strength is dense coverage in urban areas, which means if one station is down, another is usually nearby. Their weakness is older hardware at some locations that suffers from chronic power module failures.

Newer EVgo stations with Delta hardware perform noticeably better.

Blink and regional networks bring up the rear. Blink's uptime hovers around 65%, driven by aging hardware and slow maintenance response. Regional networks like Francis Energy and Greenlots vary wildly by location.

Some individual stations hit 95% uptime. Others are chronically broken. The report recommends avoiding these networks for critical charging needs unless you've confirmed a specific station's status through recent user reports.

The Real-World Impact: What This Means for Your Road Trips and Daily Commute

These numbers translate directly into real driver experiences. Understanding them changes how you plan.

For road trips, the implications are clear. You cannot trust a single station to be available. The smart strategy is to identify at least two or three backup options within range of each planned stop.

That's especially true if you're driving a non-Tesla EV relying on CCS networks.

Here's what the data suggests for trip planning:

• Always confirm station status through the network app and cross-reference with user reports on the Chargerhelp platform
• Avoid stations with less than 10 recent successful charging sessions in the last 30 days
• Carry a backup plan for stretches where the next available station is more than 50 miles away
• During winter months, increase your buffer by at least 20% on range estimates

For daily commuting, reliability matters differently. If you charge at home, public network issues barely affect you. But if you rely on public charging because you park on the street, at an apartment, or at a workplace without dedicated charging, uptime becomes a major factor.

The report highlights that workplace and destination charging (Level 2) tends to be more reliable than highway DCFC. The downtime at Level 2 stations is often shorter because the stakes are lower, nobody is stranded waiting for a charge. But the failure rate is still significant.

About 15% of Level 2 stations in the study had at least one week-long outage during the year.

For fleet operators, the reliability data is critical for cost calculations. A fleet of 20 EVs that depends on public charging can lose hours per week to broken stations. That translates into missed deliveries, overtime costs, and driver frustration.

The report recommends that fleets negotiate maintenance response time guarantees into any partnership with a charging network.

The practical takeaway from all this data is simple: EV charging infrastructure isn't as reliable as it needs to be, but the gap between the best and worst networks is huge. Pick your charging strategy based on real performance data, not network marketing claims.

Lessons from the Data: What Charging Networks (and Drivers) Need to Change

The report makes one thing clear: hardware standardization is the missing piece. Networks running a single charger brand see faster repairs and higher uptime. Tesla proves it.

Mixed-vendor sites suffer because technicians need different training and spare parts for each cabinet. That fragmentation is fixable.

For charging networks, the data recommends three shifts. First, invest in on-site spare module inventories instead of waiting for shipments. Second, cross-train every technician on the most common failure modes.

Third, push charger manufacturers to adopt common connectors and control boards so one spare kit fits multiple brands. The upfront cost is high, but the report shows it pays back in avoided downtime within 18 months.

For drivers, the lesson is about behavior change. Do not trust a single status check. Use user-submitted reports from the past 24 hours as your primary filter.

If a station shows fewer than five successful charges in the last week, treat it as unreliable. The difference between a station that "appears online" and one that actually works is often a broken payment terminal or a stuck connector.

The report also highlights a positive trend. Networks that participated in the previous year's study improved uptime by an average of 6%. Transparency creates accountability.

Drivers can accelerate that by reporting failures through the Chargerhelp platform and publicly calling out networks that ignore chronic issues.

This mirrors lessons from other infrastructure sectors. Just as understanding the key components of a solar panel helps you evaluate quality, knowing the failure patterns in EV chargers helps you pick the right network for your needs. The long-term solution, like evaluating the advantages and disadvantages of solar panels, involves trade-offs between cost, convenience, and reliability.

Networks that hide their data should be treated with skepticism.

The U.S. Department of Energy's Alternative Fuels Data Center provides additional technical guidance on charging infrastructure best practices.

Frequently Asked Questions

How often is the Chargerhelp reliability report published?

It is an annual report released each year covering the previous 12 months of data. The most recent edition covers charging station performance through the end of 2025.

Which charging network is the most reliable?

Tesla Supercharger consistently leads with uptime above 95%. Among CCS networks, Electrify America has shown the most year-over-year improvement, reaching the low 80s in the latest report.

What causes most EV charger failures?

Power module failures inside the charger cabinet account for roughly 35% of total downtime. Payment system glitches and connector damage each contribute another 20-25%.

How can I check if a charger is working before I arrive?

Use the network's own app for basic status, but cross-reference with user-submitted reports on the Chargerhelp platform. Look for recent charging sessions within the last 24 hours as the strongest signal.

Are Level 2 chargers more reliable than DC fast chargers?

Yes. Level 2 stations in the study averaged 6-8% higher uptime than DCFC units. They have simpler electronics and experience less wear from high-power cycling and heavy cable handling.