Installing solar for a studio apartment in 2026 costs between $3,000 and $6,500 after the federal Investment Tax Credit (ITC), making it one of the more affordable residential solar projects on the market. The national average before incentives sits around $3.00–$3.50 per watt installed, according to the Solar Energy Industries Association (SEIA), which means a properly sized studio system of 1.5–2.5 kW runs $4,500–$8,750 before the 30% ITC reduces your out-of-pocket cost by $1,350–$2,625.
Three variables determine where your actual cost lands: your average monthly electricity use (studio apartments typically consume 300–600 kWh per month), the number of peak sun hours at your location, and whether you own your unit or rent. Get those three numbers right and the rest of the math follows quickly.