Volkswagen Group Spanish unit Seat will launch six electric and plug-in hybrid models by 2021.
The Mii and el-Born will be the brand's first two fully electric models, while the new generation Leon and the Tarraco will offer plug-in hybrid powertrains.
Cupra Leon and Formentor models will also have offer plug-in hybrid.
Seat also announced that the Formentor, unveiled at the Geneva Motor Show, would be built at the Martorell factory just outside Barcelona.
Seat will develop a new vehicle platform in collaboration with the Volkswagen brand, a smaller version of the Modular Electric Drive Toolkit (MEB) on which multiple vehicles – from multiple group brands – of around four metres in length will be made.
The goal of the new platform is to develop affordable electric vehicles, with an entry level price below EUR20,000. Around 300 engineers will be participating in this project in Spain.
CEO Luca de Meo said: "Seat now has a clearer role in the Volkswagen Group, and thanks to the results obtained, we have earned the new electric vehicle platform.
"For the first time, the Seat Technical Centre will be developing a platform that may be used by more brands around the globe."
Volkswagen CEO Herbert Diess said: "Seat is playing a new role within the Group taking on even more responsibility. This year's achievements underline Seat's potential to make use of growth opportunities and open new markets.
"The small electric platform project is a great step towards an even more affordable electric mobility. Seat will realize the first electric vehicle that is especially designed for urban journeys."
The electric offensive also encompasses a micromobility strategy which, as announced during the recent Mobile World Congress, Seat is going to lead for the group. The recently unveiled Minimo concept car electric eXS kickscooter are two examples of urban micromobility.
Record 2018 results
Profit after tax was up 4.6% to EUR294m while operating profit grew 93.2% to EUR223m on turnover up 4.6% to EUR9.991bn.
Deliveries rose 10.5%to a record 517,600 vehicles.
In 2018, Seat exported 80% of its output and was Spain's largest industrial exporter, with close to 3% of the country's total export figure.
The brand plans to begin operations in Chile in the second half of 2019 and strengthen its presence in Colombia.
In China, Seat is a part of the JAC Volkswagen joint venture and preparations are being made for its entry to the world's largest car market.