The spacing of photovoltaic brackets is usually between 2. This is to ensure that the front and rear rows of brackets will not block each other's shadows, thereby ensuring the light utilization rate of photovoltaic modules.
Costs vary from $400 to $700 per kilowatt-hour (kWh) installed, depending on battery technology (lithium-ion, flow batteries, etc. Regular inspections, cleaning, repairs, and monitoring are essential to maintain peak system performance. Expect to spend 1-3% of the total.