Iola Hughes

Iola Hughes

Head of Research

Iola was Head of Research at Rho Motion prior to the acquisition, and now leads the downstream research for the Benchmark. She has six years of experience in the battery space and works across electric vehicle, battery, and energy storage markets. Previous experience includes a research position with a Servomex working on paramagnetic sensors and spectroscopy gas analysis. Iola graduated with a First-Class Honours Master’s Degree in Geophysics from University College London

Recent articles by this Author

US replaces expiring tariffs with new forced-labour duties on 60 countries

Article | Jul 27, 2026 | 2 min read

US replaces expiring tariffs with new forced-labour duties on 60 countries

The US has replaced its temporary 10% global tariff with a new Section 301 duty tied to a forced-labour investigation, covering 60 trading partners including Canada, Mexico, India and the UK. The measure took effect at 12:01am ET on 24 July 2026, as the prior Section 122 tariff – put in place after the Supreme Court ruled the administration could not impose duties by declaring a national emergency – expired. The new rate is 10% for 14 economies with existing forced-labour import bans or relevant trade commitments, and 12.5% for the remaining 46, including China. Brazil faces a separate 25% Section301 tariff from 22 July under a distinct case.

EU Electrification Action Plan targets 46% electrification by 2040 and BESS buildout

Article | Jul 23, 2026 | 4 min read

EU Electrification Action Plan targets 46% electrification by 2040 and BESS buildout

The European Commission is aiming to make Europe the world’s first ‘electro-powered continent’ though its Electrification Action Plan and revised Emissions Trading System (ETS) announced 17 July. Electrification of energy demand has stalled at 23% for a decade; the Commission wants to lift that to an indicative 46% by 2040, a shift it says could cut the EU's fossil fuel import bill by €260 billion a year. The ETS review backs this with an investment engine, a €100 billion Industrial Decarbonisation Bank, and a requirement that member states plough half their ETS revenues into decarbonisation.

China's battery exports reach $40bn in first five months of 2026 as new markets emerge

Article | Jun 23, 2026 | 3 min read

China's battery exports reach $40bn in first five months of 2026 as new markets emerge

China's lithium ion battery exports reached US$8 billion in May 2026, up 37% year-on-year (YOY), bringing the year to May total to $40 billion. That marks a 45% increase on the same period in 2025. According to China Automotive Battery Innovation Alliance (CABIA) data, exports reached 29GWh in May, taking the Jan–May total to 145GWh. The year to May figures reflect a front-loaded quarter. March exports hit a record $9.7 billion, likely driven in part by exporters pulling forward shipments ahead of the 1 April cut to the battery export rebate. Levels normalised in April and May, but remain well ahead of the same months in 2025.

FERC's large load order puts battery flexibility at the centre of US grid policy

Article | Jun 22, 2026 | 3 min read

FERC's large load order puts battery flexibility at the centre of US grid policy

The US’ Federal Energy Regulatory Commission (FERC) issued one of its most consequential grid actions in years on 18 June, directing all six US regional grid operators to justify or reform their tariffs for connecting large load (>20MW) energy users, such as AI data centres, crypto mining and advanced manufacturing facilities. The order aims to accelerate the ability for large loads to connect to the grid while ensuring reliable and affordable electricity for US consumers.

Benchmark battery energy stationary storage database surpasses 10,000 projects

Article | Jun 05, 2026 | 2 min read

Benchmark battery energy stationary storage database surpasses 10,000 projects

The battery energy stationary storage (BESS) market has grown significantly over the last five years, with this growth is set to continue. Benchmark’s BESS database has now surpassed 10,000 unique projects, both operating and in the pipeline. This is nearly nine times the number of projects Benchmark tracked in the May 2022 edition of the BESS database. The average size of the projects in the database has increased significantly, too, from 193MWh in 2022 to 316MWh today.

Chinese battery exports in April remain strong despite changes to tax rebate

Article | May 21, 2026 | 2 min read

Chinese battery exports in April remain strong despite changes to tax rebate

China’s battery exports remained strong in April, despite expectations of a dip following frontloading in March. That uptick came in anticipation of the reduction in the battery export rebate, which fell from 9% to 6% from 1 April. Yet despite an 18% fall from March in April, lithium-ion battery exports grew 30% in dollar terms year-on-year in April, to US$8 billion, and 42% year-on-year in GWh terms to 31.7GWh.

The fast charging competition between CATL and BYD

Article | May 06, 2026 | 3 min read

The fast charging competition between CATL and BYD

Both CATL and BYD have made announcements renewing their commitment to fast charging this year, pushing faster, ultra-high charging speeds up to 15C even as existing technologies have approached the refuelling time of internal combustion engine (ICE) vehicles. Competition between the two firms on charging speed, highlighted again at CATL’s 2026 Tech Day event last month, comes as progress on energy density has slowed for lithium iron phosphate (LFP) batteries.

Chinese battery exports reach record high in March as export rebate change comes into force

Article | Apr 22, 2026 | 2 min read

Chinese battery exports reach record high in March as export rebate change comes into force

China’s battery exports grew 48% year-on-year in Q1, according to newly released trade data, while they hit a record high in March. It was a notably strong quarter at a time where seasonality typically translates to weaker numbers. According to General Administration of Customs of the People's Republic of China (GACC) data, USD value exports of HS8507.60 increased by 55% in Q1 2026, hitting USD$23.95 billion.

Europe has record quarter for energy storage

Article | Apr 17, 2026 | 2 min read

Europe has record quarter for energy storage

New installations of utility-scale storage in Europe more than doubled in the first quarter of 2026 compared to Q1 2025. Over 6.5GWh was installed in the first three months of the year, with over half of that coming online in March. Notably, March saw more capacity installed than the full year of 2023. In 2023 Benchmark tracked 90 utility-scale projects entering operation, compared to 75 in the first quarter of 2026.

US EV demand shift and BESS growth: Who deployed the most batteries in 2025?

Article | Mar 25, 2026 | 2 min read

US EV demand shift and BESS growth: Who deployed the most batteries in 2025?

Overall lithium ion battery demand increased by 30% year-on-year to over 1.6TWh in 2025, compared to 1.3TWh in 2024, and the largest four manufacturers meeting that demand remained at the top of the rankings. There have been shifts among the next-largest players, however, as increased battery energy stationary storage (BESS) demand and a dip in US electric vehicle (EV) sales growth have affected some South Korean firms in particular.