V2G commercial rollout concentrated in three European countries; regulatory frameworks the decisive differentiator

Headline Finding

As of mid-2026, commercial V2G offerings are available only in France, the Netherlands, and the United Kingdom — the three European countries where all necessary regulatory conditions (differentiated tariffs, aggregator market access, ancillary services participation, local flexibility procurement) are simultaneously met. Germany eliminated double grid fees for bidirectional charging at end-2025 and is expected to see its first commercial offers shortly after. The EU has mandated bidirectional capability and ISO 15118-20 support for all new chargers from 2027. Elsewhere, Brazil, Thailand, South Korea, Australia, and China are at pilot or pre-commercial stage, with China targeting 5,000 V2G charging facilities by end-2027 across 30 pilot projects in 9 cities announced in 2025. The pattern confirms that regulatory framework completeness — not technology readiness alone — is the binding constraint on V2G commercialisation.

Detail

IEA analysis (May 2026) maps the global regulatory and commercial status of V2G: COMMERCIAL: France, Netherlands, United Kingdom — all necessary conditions met; commercial offerings available. Germany — double grid fees for bidirectional charging eliminated end-2025; first commercial offers expected shortly after. PRE-COMMERCIAL / PILOT: Finland, France, Denmark — aggregation of EV charging for grid balancing and ancillary services enabled. Brazil — 2025 electricity market reform enables aggregator development and differentiated tariffs; in 2026, ANEEL (National Electric Energy Agency) authorised a V2G pilot project enabling V2G billing through aggregation with EVs, solar generation, and energy storage. Thailand — policy sandboxes established to enable V2G pilot projects. South Korea — Hyundai Motor Group leading an AC V2G pilot aligned with a recent grid-code update proposal by KEPCO (Korean Electric Power Corporation). Australia — one of the country’s largest utility providers trialling a limited V2G subscription bundle including a BYD Atto 3, a bidirectional charger, and a dedicated tariff. China — government announced 30 pilot projects across 9 cities in 2025; target of 5,000 V2G charging facilities by end-2027; barriers include incomplete standardisation of GB/T bidirectional charging protocols and absent or proprietary higher-level communication protocols between charger, aggregator, and grid. EU MANDATE: From 2027, minimum requirements for all new chargers include bidirectional capability and ISO 15118-20 support. Key regulatory features identified as necessary: differentiated tariffs (time-of-use, dynamic real-time, critical peak pricing, locational signals); market access for aggregated loads; ancillary services market access; local flexibility procurement.

Governance Implication

1. REGULATORY FRAMEWORK AS THE BINDING CONSTRAINT: The concentration of commercial V2G in only three countries — all of which have simultaneously satisfied four distinct regulatory conditions — demonstrates that technology readiness is necessary but not sufficient. Cities and national regulators in markets at pilot stage face a checklist governance task: differentiated tariffs, aggregator access, ancillary services participation, and local flexibility procurement must all be in place concurrently. Partial frameworks produce pilots, not markets.
2. FISCAL AND ENERGY LEVERS — SEQUENCED BY REGULATION: Germany’s elimination of double grid fees at end-2025 is a direct fiscal-lever move that unblocks commercial deployment; the EU’s 2027 charger mandate is a supply-side instrument that will expand the addressable hardware base. Both illustrate how specific, targeted regulatory acts unlock the energy and fiscal value identified in the grid-investment-avoidance literature.
3. LEGITIMACY LEVER — EARLY MOVER ADVANTAGE: Countries with commercial offerings (FR, NL, UK) are building consumer trust and aggregator market structures ahead of the field. Late-mover jurisdictions (including large EV markets such as China and Korea) face a legitimacy gap — consumers and OEMs in those markets lack the commercial proof-points that build confidence in V2G revenue promises.
4. CHINA’S SCALE AMBITION VS. STANDARDS GAP: China’s target of 5,000 V2G facilities by end-2027 across 30 pilot cities represents a significant rollout-velocity commitment, but the IEA identifies incomplete GB/T protocol standardisation and absent higher-level aggregator-grid communication as barriers to full commercialisation. The governance clock (standards, market rules) is running behind the deployment clock.
5. CHAPTER 8 IMPLICATION: The EU’s 2027 bidirectional charger mandate creates a near-term policy window. Cities and distribution system operators in EU member states should use the 2026–2027 period to establish the tariff and aggregator frameworks that will allow the mandated hardware to be commercially activated from day one of the mandate’s entry into force.

Sources

IEA, ‘Vehicle-to-grid technology’, Global EV Outlook 2026, 20 May 2026, https://www.iea.org/reports/vehicle-to-grid-technology