Use valley price electricity to store energy

Can user-side energy storage projects be profitable?

At present, user-side energy storage mainly generates income through the arbitrage of the peak-to-valley electricity price difference. This means that if the peak to valley price difference is higher than the levelized cost of using storage (LCUS), energy storage projects can be profitable.

How many provinces have a peak to Valley electricity price difference?

The State Grids and China Southern Power Grids of 29 provinces, autonomous regions and municipalities announced the electricity tariffs for industrial and commercial users in December 2021. According to the statistics, 14 provinces and cities have a peak to valley electricity price difference that exceeds 0.7 yuan/kWh.

Why do we need more electricity during peak hours?

Guiding users to use more electricity during the peak hours of wind and solar power generation and less electricity during valley hours also helps increase the consumption of renewable energy, increase the proportion of renewable energy power generation in the grid and achieve more carbon emissions reduction ( Rupp et al., 2020 ).

How can we maximise the current valley-filling potential based on EV charging Demand?

To maximise the current valley-filling potential based on the EV charging demand and the peak hours of the power grid, we propose the following policy recommendations. First, on weekdays, increase the charging price from 17:00 to 22:00, and reduce it after 22:00.

Can a peak-valley difference of thermal power output be reduced?

The average peak-valley difference of thermal power output can also be reduced by 11.7% on weekdays. 1. Introduction

Are energy storage projects profitable in China?

Depending on the utilisation hours and size of a project, energy storage project LCUS in China can be well below 1 CNY / kWh, making such projects profitable in a number of areas. (BJX)