Why pv + energy storage is the trend?

Nowadays, solar energy has already begun to shine: in many countries, solar energy is the lowest cost of energy options, both in terms of household and commercial perspective, even if the external cost was not included in the scope of fossil fuels and nuclear power, solar energy within the field of public utilities are more and more widely used. In most markets, the proportion of solar energy share is still less than 5%. In the field of heating, transportation and energy by means of electrification decarbonisation provides many opportunities for solar market, photovoltaic (pv) challenges and opportunities coexist, is the development trend of industry of photovoltaic (pv) + energy storage is the trend of The Times.

solar energy accounted for 5% of the electricity demand, today's European Union will increase to 15% by 2030, an annual increase of solar power installed capacity of 20 gw. Another trend is associated with the battery energy storage. In 2017, the first government subsidized solar farms in the UK, 2016 - All 2017 households with solar energy project nearly half the emergence of battery energy storage. Energy storage is an important and flexible tools, storage battery energy storage can fast accurate, smooth short-term fluctuations, eliminate the maximum load power, solar energy available at any time. In addition, the photovoltaic (pv) + energy storage and economic advantages, electricity price is high to store solar energy, electricity prices are low to use solar energy, help to stabilize prices, reduce the cost of upgrading and extension of the grid in the future. In addition, still can increase local employment, reduce carbon dioxide emissions.

energy storage optimization of solar energy to supply the

solar supply curve ( Yellow) Is a variable, and the traditional electricity demand curve ( Blue) Only partially consistent, combining photovoltaic + energy storage to store excess electricity ( White area) When the user demand is too high, Blue area) , can be stored solar energy transport back to the grid, the maximum potential use of energy storage technology.

energy storage to make solar energy output more stable

more stable means that the output of the solar system will not increase or decrease with fast speed. Solar & amp; Battery systems work together are the benefits of short-term supply and demand variable can be stable. Energy storage can even make the solar system output can be allocated completely, which is available on demand. Energy storage to provide ancillary services

auxiliary services make energy system coexist with variable time up to an hour. In order to provide such services, generators need rapid response signal, correct frequency in the fluctuation. Photovoltaic (pv) + energy storage system flexibility to transmission system operator ( TSO） And the power distribution system operator ( DSO) Provide faster and more accurate service. Energy storage reduce network cost

traditional grid can only handle the peak demand. However, more and more of a new generation of the grid need to face the supply side and demand side at the same time. Photovoltaic (pv) + energy storage system can greatly reduce the supply side peaks. Projects in Germany, a household energy storage system of solar energy system can be maximum output down to 40%, power feed-in tariffs therefore reduce the peak. To optimize the supply and storage measures can improve the ability of existing grid, will be more renewable power integration, avoid network upgrade. Photovoltaic (pv) + energy storage should have the right to the grid connection, the user should be clear in the contract fair measurement cost.

photovoltaic + energy storage to provide more stable energy prices

photovoltaic + energy storage system can through the electricity price arbitrage profit from, when overproduction, energy storage system at a lower price to absorb electricity from the grid. Electricity price is too high, send the battery back to back to the grid, reduce the overall price floating, to improve the reliability of the system and the ability to operate at the same time, the system is feasible and household level. The different types of time-sharing electricity taxes equally applicable, such as fixed prices, along with the hours of electricity during the day and calm; Variable prices, along with the market application. Electricity price, therefore, must have a bigger float, more importantly, the cost of the grid tax should only once on every kilowatt hours of electricity into the grid.