Step 1: Break down the scheme name.
"PM Surya Ghar Muft Bijli Yojana" - Surya = Sun, Ghar = House, Muft = Free, Bijli = Electricity. The Hindi name itself reveals the scheme's core objective.
Step 2: Understand the primary objective.
The scheme installs rooftop solar systems at 1 crore (10 million) households across India, enabling them to generate their own electricity and receive effectively zero electricity bills - free electricity via solar power.
Step 3: Eliminate the distractors.
PM-KUSUM covers solar pumps for farmers. Government-building solar panels is a separate initiative. EV charging stations are not part of this scheme. The unique feature here is "Muft Bijli" (free electricity) for residential households through rooftop solar.
\[ \boxed{\text{Free electricity via rooftop Solar System}} \]