Cấu hình PV + Lưu trữ + Sạc EV

Start from daily load: PV capacity covers daytime demand plus battery charging; the battery covers night and peak periods; EV charging adds a large coincident load. A 100 kW PV with 200 kWh storage and 6-10 chargers is a common C&I configuration. The configurator matches PV, BESS and charging capacity and reports the bill of materials and economics.

Peak-shaving charges the battery during low-price or high-PV periods and discharges during peak-price hours to reduce demand charges and grid imports. For a commercial site with a $10/kW monthly demand charge, cutting 200 kW of peak can save $24,000/yr. The configurator sizes the battery for the shaving strategy and quantifies the saving.

EV charging is a sharp evening load that often coincides with peak tariffs, so storage is sized larger to serve it and avoid demand spikes. A 120 kW fast charger can draw 120 kVA; a 10-charger station peaks near 500-1200 kVA. The configurator adds charging load to the peak-shaving model and sizes BESS accordingly.

LFP (lithium iron phosphate) dominates C&I storage for safety, cycle life (6,000+ cycles at 80% DoD) and cost, versus NMC which offers higher energy density but lower thermal stability. LFP round-trip efficiency is ~90-95%. The configurator prices LFP-based container and cabinet systems per IEC 62619.

Integrated C&I projects typically pay back in 4-7 years where tariffs and demand charges are high, driven by avoided energy cost, demand-charge reduction and EV charging revenue. The configurator computes full-cost economics — LCOE, payback, IRR and NPV — from your tariff, irradiation and load profile.

EV charging follows IEC 61851 and GB/T 51313; energy storage system safety follows IEC 62619/IEC 62933 and GB/T 36547; PV grid connection follows GB/T 19964 and IEEE 1547. The configurator cites these standards in its design basis and selects compliant equipment.