Trend analysis: Charging standards & interoperability (NACS, CCS) — where the value pools are (and who captures them)

The global EV charging market is projected to exceed $190 billion by 2030, yet the battle over connector standards and interoperability protocols will determine which companies capture the lion's share of that value. With Tesla's NACS connector adopted as the SAE J3400 standard in North America and CCS (Combined Charging System) dominant across Europe and Asia, the competitive landscape is splitting into distinct value pools: hardware manufacturing, software platforms, grid integration services, and payment roaming networks. Understanding where these pools concentrate, and who is positioned to capture them, separates strategic infrastructure investors from those building on shifting ground.

Why It Matters

Charging interoperability is no longer a niche engineering concern. It is a $190 billion infrastructure buildout that will reshape how energy is distributed, how vehicles interact with the grid, and how consumers experience electric mobility. The stakes are enormous: a fragmented charging ecosystem adds $0.05-0.10 per kWh in friction costs, while seamless interoperability unlocks network effects that reward early movers with outsized returns.

For product and design teams, the implications are direct. Every EV sold must work reliably at every charging station, regardless of manufacturer, operator, or region. Every charging network must serve every vehicle. The companies that solve this interoperability challenge at scale will control the customer relationship, the data layer, and the grid services revenue that flows through it.

Three structural shifts are driving the value reallocation. First, the NACS-to-J3400 standardization in North America is eliminating adapter friction for roughly 60% of global EV sales. Second, the EU Alternative Fuels Infrastructure Regulation (AFIR) is mandating minimum deployment targets and payment interoperability by 2025-2027. Third, bidirectional charging and vehicle-to-grid (V2G) capabilities are creating entirely new revenue streams tied to grid flexibility.

Key Concepts

NACS (North American Charging Standard): Originally Tesla's proprietary connector, adopted as SAE J3400 in November 2022. By early 2026, Ford, GM, Rivian, Hyundai, BMW, Mercedes-Benz, and virtually every major OEM has committed to NACS in North America. The connector handles up to 1 MW of DC power in its latest revision, supporting both passenger and commercial vehicles.

CCS (Combined Charging System): The IEC/SAE standard comprising CCS1 (North America, legacy) and CCS2 (Europe, Asia-Pacific). CCS2 remains the mandated standard in the EU under AFIR and is deployed across more than 120,000 public DC fast chargers in Europe. China's GB/T standard functions as a regional third standard, with ChaoJi emerging as the next-generation connector designed for cross-compatibility with CCS.

OCPP (Open Charge Point Protocol): The open communication protocol between charging stations and central management systems. OCPP 2.0.1 supports smart charging, device management, and security features. Adoption of OCPP is near-universal among European charge point operators and growing in North America.

ISO 15118 (Plug & Charge): The standard enabling automatic authentication and payment when a vehicle is plugged in, eliminating RFID cards or apps. Full ISO 15118 deployment is a prerequisite for seamless interoperability and is embedded in both NACS and CCS2 specifications.

What's Working

NACS adoption is accelerating faster than projected. By Q1 2026, over 85% of new EV models sold in North America ship with native NACS ports. Tesla's Supercharger network, comprising more than 60,000 stalls globally, has opened to non-Tesla vehicles in the US and Canada, creating the largest interoperable fast-charging network in the region. ChargePoint, EVgo, and Electrify America are deploying dual-cable stations (NACS + CCS1) at new sites, with NACS-only installations beginning at greenfield locations.

European roaming networks are maturing. The Hubject and Gireve eRoaming platforms now connect over 600,000 charge points across Europe, enabling drivers to use a single app or RFID card across multiple networks. AFIR mandates ad-hoc payment (contactless bank card) at all public DC chargers above 50 kW by 2027, further reducing friction. Ionity's network of 3,000+ high-power chargers across 24 European countries demonstrates the viability of cross-border interoperability.

Plug & Charge deployment is scaling. BMW, Mercedes-Benz, Ford, and Porsche have implemented ISO 15118-based Plug & Charge functionality across their lineups. Electrify America reports that Plug & Charge sessions grew 400% year-over-year in 2025, with transaction failure rates dropping below 2% compared to 8-12% for app-based sessions. This reliability improvement directly translates to higher station utilization and customer retention.

What's Not Working

Legacy CCS1 infrastructure creates stranded asset risk in North America. Over 40,000 CCS1-only DC fast chargers are installed across the US, representing $4-6 billion in deployed capital. Retrofitting these stations with NACS cables costs $3,000-8,000 per connector, and operator margins are too thin to fund conversions at scale without federal support. The NEVI (National Electric Vehicle Infrastructure) program requires NACS and CCS connectors at funded sites, but the installed base funded before the standard shift faces uncertain economics.

Payment interoperability remains fragmented in practice. Despite eRoaming platforms, real-world charging experiences still suffer from 15-20% session initiation failures when roaming across networks, according to a 2025 European Automobile Manufacturers' Association (ACEA) survey. Pricing transparency is poor: roaming surcharges of 20-40% above host-network rates are common, eroding consumer trust and discouraging network-agnostic behavior.

Power delivery reliability gaps persist at high utilization. As station utilization rates climb above 30%, grid constraints and transformer capacity limits cause power curtailment at 25-35% of high-power charging sites in dense urban areas. In Germany, grid connection timelines for new 350 kW+ stations average 18-24 months, creating a bottleneck that no connector standard can solve.

ChaoJi standardization timeline remains uncertain. The joint CHAdeMO Association and China Electricity Council effort to create a globally compatible megawatt-class connector has slipped from its 2025 target. Without ChaoJi finalization, heavy-duty vehicle charging in Asian markets lacks a clear path to interoperability with European CCS2 infrastructure.

Value Pool Analysis

Value Pool	Market Size (2030)	Margin Profile	Key Capture Mechanism
Hardware (connectors, cables, power electronics)	$28-35B	15-22% gross	Scale manufacturing, patent portfolios
Charging network operation	$45-55B	8-15% EBITDA	Site acquisition, utilization optimization
Software platforms (CPMS, billing, roaming)	$12-18B	55-70% gross	Network effects, data aggregation
Grid services (demand response, V2G)	$8-14B	30-45% gross	Utility partnerships, ISO 15118 integration
Payment and identity services	$4-7B	40-55% gross	Regulatory compliance, banking partnerships

The software and grid services layers capture disproportionate value relative to their capital intensity. Hardware margins are compressing as Chinese manufacturers like Sinexcel and Increase Group enter the market with 30-40% cost advantages. Network operators face the classic infrastructure squeeze of high capex paired with utilization-dependent returns. The durable competitive advantages accrue to platforms that aggregate demand, manage grid interactions, and own the customer billing relationship.

Key Players

Established Leaders

• Tesla: Operates the world's largest fast-charging network with 60,000+ Supercharger stalls. NACS adoption as J3400 positions Tesla's connector as the de facto North American standard, generating licensing revenue and network access fees from competing OEMs.
• ABB E-mobility: Leading global manufacturer of DC fast chargers, supplying hardware to Ionity, BP Pulse, and Shell Recharge. Terra 360 charger delivers 360 kW with CCS2 and NACS compatibility.
• ChargePoint: Operates the largest open EV charging network in North America with 300,000+ ports. Software platform approach generates recurring SaaS revenue from site hosts.
• Ionity: Joint venture of BMW, Ford, Hyundai, Mercedes-Benz, and Volkswagen Group. Operating 3,000+ high-power chargers across 24 European countries with CCS2 standard.
• Hubject: Berlin-based eRoaming platform connecting 500,000+ charge points across 55 countries. Provides the interoperability backbone for cross-network billing and Plug & Charge certificate management.

Emerging Startups

• Kempower: Finnish fast-charging hardware maker with modular, scalable architecture. Revenue grew 70% in 2025, driven by European depot and fleet charging demand.
• Noodoe: Cloud-based charging management platform serving 40+ countries. Focuses on white-label software for utilities and property managers entering the charging market.
• Ampcontrol: AI-powered charging optimization software that manages power distribution across stations to maximize throughput within grid constraints. Deployed at 5,000+ stations.
• EV Connect: Charging management platform acquired by Schneider Electric, integrating building energy management with EV charging orchestration.

Key Investors and Funders

• BlackRock Climate Infrastructure: Committed $2.5 billion to EV charging infrastructure globally, backing both network operators and software platforms.
• Brookfield Renewable Partners: Invested in BP Pulse and other charging networks, leveraging existing energy infrastructure expertise.
• European Investment Bank (EIB): Provided EUR 1.2 billion in financing for AFIR-aligned charging deployments across EU member states.

Action Checklist

1. Audit connector strategy by market: Map product portfolio against NACS (North America), CCS2 (Europe), and GB/T (China) requirements. Plan dual-connector support for transitional infrastructure.
2. Implement OCPP 2.0.1: Ensure all new charge point deployments support OCPP 2.0.1 for vendor-neutral management and smart charging capabilities.
3. Deploy ISO 15118 Plug & Charge: Integrate Plug & Charge certificate management to reduce session failure rates and improve customer experience.
4. Evaluate grid services revenue: Model demand response and V2G revenue potential at each site. Partner with utilities or aggregators to capture grid flexibility payments.
5. Join eRoaming networks: Connect to Hubject or Gireve to enable cross-network billing and maximize station utilization through expanded customer reach.
6. Plan for AFIR compliance: Ensure European deployments meet ad-hoc payment mandates (contactless card acceptance) and uptime reporting requirements by 2027 deadlines.
7. Monitor ChaoJi development: Track the CHAdeMO-China joint standard for heavy-duty vehicle implications and potential Asia-Europe interoperability requirements.

FAQ

Will CCS1 connectors become obsolete in North America? CCS1 will remain functional for the installed vehicle base but is no longer the growth standard. Most new public fast chargers deployed from 2025 onward include NACS as the primary connector with CCS1 as a secondary option. The transition period is expected to last through 2030-2032 as older CCS1-only EVs age out of the fleet.

How does NACS adoption affect European charging infrastructure? Minimally in the near term. CCS2 remains the mandated standard under EU AFIR, and European OEMs have not announced NACS adoption for European-market vehicles. However, ABB and other hardware manufacturers now offer NACS-compatible modules that could be deployed if market dynamics shift.

What is the revenue potential of vehicle-to-grid (V2G) through charging stations? Early V2G pilots show $500-1,500 annual revenue per vehicle from grid services, depending on market structure and tariff design. The UK's V2G pilot programs and California's SGIP incentives demonstrate commercial viability, but scaling requires ISO 15118-20 support and utility program enrollment.

How reliable are cross-network roaming sessions today? Session success rates for roaming average 80-85% in Europe and 75-80% in North America, compared to 95%+ for home-network sessions. The gap is closing as OCPP 2.0.1 and standardized payment protocols are adopted, but full parity is expected by 2028.

What margins can independent charge point operators expect? At current utilization rates (15-25%), most independent CPOs operate at breakeven or slight losses. Profitability requires 25-35% utilization for DC fast chargers, achievable through site selection, pricing optimization, and ancillary revenue from advertising or retail partnerships. Software-enabled operators with dynamic pricing achieve profitability 12-18 months earlier than fixed-price competitors.

Sources

1. SAE International. "J3400 NACS Standard Technical Specification." SAE, 2024.
2. European Commission. "Alternative Fuels Infrastructure Regulation (AFIR) Implementation Guidelines." EC, 2025.
3. International Energy Agency. "Global EV Outlook 2025: Charging Infrastructure." IEA, 2025.
4. BloombergNEF. "EV Charging Infrastructure Market Outlook." BNEF, 2025.
5. European Automobile Manufacturers' Association. "EV Charging Interoperability Survey Results." ACEA, 2025.
6. McKinsey & Company. "Charging Ahead: Electric Vehicle Infrastructure in 2030." McKinsey, 2024.
7. Rocky Mountain Institute. "EV Charging Value Pools and Business Models." RMI, 2024.