Maximizing Performance of Grid-Tied PV Systems

摘要

APV system's job is to produce as much energy as possible. Maximizing system performance means getting the best return on investment, as utility bills are reduced or even eliminated. More energy (kWh) produced means a quicker payback time and a greater return on investment. With an off-grid system, an optimally performing system will save on generator run-time and thus fuel and longevity expense, as well fulfill its most important function: providing enough power when you need it. If you are comparing PV system bids, it's wise to look at the cost per kWh ($/kWh) of different proposals. PV system initial cost is often talked about in dollars per watt. The problem with this metric is that, depending on siting and shading factors, the same size PV system could perform very differently depending upon variables-for example, a 5 kW system facing true south is likely to produce more energy over its lifetime than if it was on an east-facing roof.