Like Toyota Motor Corp, Hyundai had initially championed fuel cell technology as the future of eco-friendly vehicles but has found itself shifting electric as Tesla shot to prominence and battery-powered cars have gained government backing in China.
Toyota is now also working on longer distance, fast-charging electric vehicles, local media have reported.
The South Korean automaker is planning to launch an electric sedan under its high-end Genesis brand in 2021 with a range of 500km per charge. It will also introduce an electric version of its Kona small sport utility vehicle (SUV) with a range of 390km in the first half of next year.
"We're strengthening our eco-friendly car strategy, centering on electric vehicles," executive vice president Lee Kwang-guk told a news conference, calling the technology mainstream and realistic.
The automaker and affiliate Kia Motors Corp, which together rank fifth in global vehicle sales, also said they were adding three plug-in vehicles to their plans for eco-friendly cars, bringing the total to 31 models by 2020.
Underscoring Hyundai's electric shift, those plans include eight battery-powered and two fuel-cell vehicles - a contrast to its 2014 announcement for 22 models, of which only two were slated to be battery-powered.
Hyundai also confirmed a Reuters report that it is developing its first dedicated electric vehicle platform, which will allow the company to produce multiple models with longer driving ranges.
Last year, it launched its first mass-market pure electric car IONIQ, but the vehicle's per-charge driving range is much shorter than offerings from Tesla and General Motors.
Hyundai also unveiled a near production version of its new fuel cell SUV with a driving range of more than 800km per charge under European standards, nearly double the 415km for its current Tucson fuel cell SUV.
The mid-sized SUV will be launched in Korea early next year, followed by US and European markets.
A fuel cell electric bus is slated to be unveiled late this year, while a sedan-type fuel cell car is also planned. Even so, analysts noted that gaining traction with fuel cells was going to be a long hard slog.
"Hyundai will achieve fuel cell economies of scale by 2035 at the earliest," Lee Hang-koo, a senior research fellow at Korea Institute for Industrial Economics & Trade.
"Before that, Hyundai has no choice but to rely on battery cars," he said.
