Peak and valley electricity prices for industrial and commercial energy storage

What is the difference between Peak-Valley electricity price and flat electricity price?

Among the four groups of electricity prices, the peak electricity price and flat electricity price are gradually reduced, the valley electricity price is the same, and the peak-valley electricity price difference is 0.1203 $/kWh, 0.1188 $/kWh, 0.1173 $/kWh and 0.1158 $/kWh respectively. Table 5. Four groups of peak-valley electricity prices.

What happens if the peak-valley electricity price difference decreases?

As the peak-valley electricity price difference, annual average irradiance and annual average wind speed decrease, the optimal allocation capacity and the annual net revenue of the BESS also decrease.

How much does electricity cost in a valley?

Table 1 shows the peak-valley electricity price data of the region. The valley electricity price is 0.0399 $/kWh, the flat electricity price is 0.1317 $/kWh, and the peak electricity price is 0.1587 $/kWh. The operation cycles (charging-discharging) of the Li-ion battery is about 5000–6000.

How does Bess optimize peak-valley price differentials?

The optimization results indicate that, while meeting the load demands, BESS needs to discharge during peak and off-peak electricity price periods and charge during valley-price periods to achieve the optimal unit electricity cost for the system, thereby maximizing peak-valley price differentials. Fig. 6.

What happens if the peak-valley price differential increases?

If the peak-valley price differential increases, users are more inclined to expand the installation of BESS and adjust their electricity consumption strategies, achieving greater economic benefits.

How much does electricity cost in an industrial park?

With the techno-economic parameters shown in Table 1, assuming a maximum load of 10 MW and no upper limit on equipment capacities, the average cost of electricity in the industrial park after optimization using the proposed model is 0.5783 (CNY/kWh), which is 23.09 % lower than using only grid electricity (0.7522 CNY/kWh).