Immediate grid upgrades needed to support global renewables deployment – EY

October 12, 2021
Facebook
Twitter
LinkedIn
Reddit
Email
A 50% increase in grid spending could be needed over the next decade, according to EY. Image: The Alliance for Innovation and Infrastructure.

The investment required to upgrade and expand transmission infrastructure across the world will be a key challenge as more renewables come online, consultancy EY has warned.

While the “conditions are ripe for rapid growth” in renewables generation around the world, an immediate upgrade of energy transmission grids is now “critical”, EY said in its biennial Renewable Energy Country Attractiveness Index (RECAI).

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

Given the extent of grid development needed across the globe, it will be crucial for all regulators to reconsider the permitting, regulatory and financing environment to help ensure outdated grid systems do not become a major hurdle in the race to net zero, according to the report.

“If sustainability goals are to be met, a 50% increase in grid spending could be needed over the next decade as markets adapt for a net zero future,” said Arnaud de Giovanni, EY global renewables leader, adding that the COP26 summit next month could be a watershed moment in combatting the climate crisis.

Ranking the world’s top 40 markets for the attractiveness of their renewable energy investment and deployment opportunities, RECAI placed the US top, a position it has held since the May 2020 edition when it leapfrogged China. Given new initiatives being announced by President Biden, the US is expected to hold its position.

However, given the hundreds of gigawatts of renewables capacity currently stuck in the country’s interconnection queues, EY said significant investment in transmission infrastructure will be a factor in meeting US emission reduction goals.

China and India remain unchanged in the rankings at second and third position, respectively, with the index highlighting the favourable regulatory and investment conditions in both markets.

The top-performing countries have held their ground in this latest issue, with no movement into or out of the top eight. France has leapfrogged the UK into fifth position, however, and Germany has edged back ahead of Australia into seventh.

A new entrant to RECAI, Indonesia is placed 39th, having set more ambitious renewables deployment targets that will see the country aim to install almost 4.7GW of solar by 2030.

Read Next

December 17, 2025
JA Solar is a lead partner in a joint venture that broke ground this week on a new 2GW solar PV cell, 2GW module and 1GWh energy storage manufacturing facility in Egypt.
December 16, 2025
The global solar inverter industry will contract over the next two years as major markets in China, Europe and the US confront new volatility, according to energy market analyst Wood Mackenzie.  
December 15, 2025
Solar manufacturer SEG Solar has started construction on a 3GW ingot and wafer manufacturing plant in Indonesia.
December 11, 2025
The Chinese polysilicon industry has emerged with a new "inventory platform" with a RMB30 billion capital aimed at increasing prices.
Sponsored
December 9, 2025
Tongwei used its Global Partner Summit to show how high-efficiency PV, digital manufacturing and biodiversity protection must advance together.
December 2, 2025
Astronergy and JA Solar have 'reached an agreement on cross-licencing' of tunnel oxide passivated contact (TOPCon) patents moving forward.

Upcoming Events

Solar Media Events
February 3, 2026
London, UK
Solar Media Events
March 24, 2026
Dallas, Texas
Solar Media Events
April 15, 2026
Milan, Italy
Solar Media Events
June 16, 2026
Napa, USA
Solar Media Events
November 24, 2026
Warsaw, Poland