NEW DELHI, Dec. 29 -- Ola Electric's scooter sales have been on a steady decline this year, putting pressure on its expanded store network, even as the company is now looking to sell home inverters through the very same outlets.

A Mint review of January-November statewise vehicle registration data from the government's Vahan portal shows that Ola Electric failed to post year-on-year growth in any month since February in four of the country's biggest electric two-wheeler markets-Maharashtra, Uttar Pradesh, Tamil Nadu and Karnataka. In at least one state and one Union territory, the company recorded zero sales at least once over the past three months, contributing to its slide to fifth position in recent rankings.

The data underscores the...