This research paper considers most common factors influencing consumer preference and behaviour towards purchasing of power inverter. The paper identifies the consumer preference in Perambalur town towards power inverter. The objectives of paper describe pre-purchase and post purchasing behaviour of the consumer and activities of showrooms. The survey questions are created using a combination of suggestions from consumer own questions and covers a variety of topics including buying preferences, brands, inverter choice, product features, micro inverters & power optimizers, service & warranty, inverter pricing. Key words: consumer, preference, power inverter, Perambalur