The optimal solar panel tilt angle equals your latitude, facing true south (Northern Hemisphere) or true north (Southern Hemisphere). At 40° latitude (New York), set panels to 40° tilt.
Buyers typically pay between $2. 50 per watt installed for school solar projects, with total system costs often ranging from $200,000 to $2,000,000 depending on size and site.
Rankings by total R&D expenditures Historical rankings based on the total R&D expenditures are provided in the table below. Data may be sorted by rank within each year.