how a solar farm in kent could bring a new dawn for renewable energy - battery energy storage system
Britain's largest solar power plant ever will be reviewed by the secretary of state in the next six months.
Cleve Hill farm will occupy the northern coast of Kent and will provide up to 350 MW if built (megawatts)
Power generation capacity.
The plan is that Cleve Hill has the lowest cost of generating electricity on the UK network without the need for subsidies.
There used to be a free solar installation subsidy, but it was not as developed as 1,000 acres in Cleve Hill.
The plant will also include battery storage-operators can choose to store energy when the electricity price is low and sell when the electricity price is high.
So why is this a milestone in the UK power supply?
Well, there are now nearly a million solar panels in the UK, from solar panels installed on roofs to farm solar panels occupying the entire field.
The deployment rate has fallen sharply over the past 10 years, largely depending on the level of subsidies the government is willing to provide.
When subsidies are high, the installation rate increases exponentially, doubling the number of installations every few months.
When subsidies fell, the installation rate plummeted.
So far, the government has monitored the growth of solar energy by controlling subsidies.
This model of prosperity and depression means that the company fails, the installer loses his job in bad times, and the company is created or changed in good times.
Today, the installation rate is very low, because there is little subsidy, it is difficult to make money with solar energy.
However, Cleve Hill can prove that money can be made without subsidies, and a project will also be tracked by others.
This could be the moment when solar units are starting to grow again. Large and Small
Scale Solar when our Sheffield solar company, a research group at the University of Sheffield, started studying the impact of solar energy on the British grid back in 2010, we wanted to know that when solar power became so cheap, so much so that the government can't control the growth of installation through subsidies and incentives, what happens.
Cleve Hill seems to mark the moment when solar energy becomes itself. reliant.
But maybe it's not that simple.
Cleve Hill is financially meaningful because it's too big.
But big impact.
Some public support for photovoltaic power generation (PV)
The technology of converting sunlight into electricity comes from its simple integration with the building environment.
The solar panels on the roof make sense to the public because the power generation is done at the point of use.
Solar farms make sense for investors because it's cheaper to install electricity per unit, but it's also bigger-so it's possible to get money with bigger blocks and investors can make more money.
If Cleve Hill marks the beginning of a free solar subsidy-but is limited to large systems that occupy large areas of the countryside-what does that mean for solar roofs?
Can global growth in solar power reduce the cost of roof systems so that we start to see the balance of installing large and small systems without subsidies?
Cleve Hill must be agreed at the highest level of government and must be developed with input from local authorities and power network operators-it can be planned into the national infrastructure.
Subsidies for free roof solar will be much less.
This could be a big problem or a gold solution.
The green energy wind in Britain this year has benefited from an unusually clear summer.
At the beginning of July, the peak of photovoltaic power generation exceeded 9GW (gigawatts)
Every day of the week.
At noon on Saturday, June 30, solar power supplies 30 of the country's electricity demand.
If there is wind on that day, then the wind may bring another 30 people.
During this period, half of Britain's energy needs were met by wind and solar energy for a few days.
Britain also has 7 GW of nuclear power and cannot really shut down.
This combination of nuclear, wind and solar means that the contribution of natural gas and other fossil fuels has fallen to about 20 of national demand this year.
Imagine if the free subsidy of solar energy is a real possibility, the number of solar installations will double in the next few years to create a peak capacity of 25 GW.
If these new systems are roof-top, then they will be embedded in the depths of the power network, where power demand is high-although there is still a problem with balancing supply and demand.
We also need to know where all the energy comes from-roof solar is hard to track and measure.
Cleve Hill and other large hotels
The scale of the solar facility is controversial because of its potential environmental impact-the lowest-
Cost installation always needs to find a large amount of land that can be developed cheaply, and environmental costs will always be generated during construction.
They also pose problems for network operators, as they generate a large amount of uncontrollable electricity flow depending on weather conditions.
However, a 350 MW solar farm with battery storage is the perfect solution from a grid control perspective-since any additional power generation will be stored on site, so the power flow will be monitored and easy to predict.
So maybe there is no conflict at all between the solar farm and the solar roof.
Perhaps we will see subsidies for free solar farms rather than a future dominated by one or another approach;
With costs falling further and without any sensible solar farm location, roof deployment will again be economically viable.
To be sure, if Cleve Hill can make money in 2019 without subsidies, then a low-carbon future with a large amount of solar contribution looks almost inevitable.
Buckley is a senior lecturer in organic electronics at the University of Sheffield.
This article appeared in the dialogue for the first time.