The most efficient tilt for photovoltaic panels in Hartford, Connecticut at a latitude of 41.77°:
Your photovoltaic panels need to be angled facing south.
If you're mounting the photovoltaic panels at a stationary angle, such as on your roof, the most efficient angle is 34.8°.
If you're planning to change the angle of your photovoltaic panels twice per year, the most efficient angle is 17.8° in summer months and 55.7° in winter months.
If you're planning to change the angle of your photovoltaic panels each season, the most efficient angle is 14.1° in summer months and 61.2° in winter months, and 38.6° in autumn and spring months.