A 150kw solar panel system can generate between 600 kWh and 900 kWh of electricity per day. Government incentives and tax credits can cover more than 30% of installation costs. Nuance. . The SMA Sunny Highpower Peak3 150-US is a grid-tied 150,000 watt (150 kW) AC output PV solar inverter designed for large-scale ground mount and power plant solar projects. Solar inverters convert DC solar power into. . To calculate solar panel output per day (in kWh), we need to check only 3 factors: Solar panel's maximum power rating. That's the wattage; we have 100W, 200W, 300W solar panels, and so on. 50 per watt installed before incentives. NLR's PV cost benchmarking work uses a bottom-up. .