China energy storage net news: the U.S. department of energy (doe) actively promote solar energy development, launched in 2011, "shoot day plan" (SunShot Initiative) to promote the solar cells to reduce costs, plan set per watt of solar battery installation cost goal in 2020 fell to $1, 3 years earlier, had been expected in 2017 at the beginning of this year will be up to standard;
The equalization cost target for each kilowatt-hour of electricity is also three years earlier. The target of 2020 is 0.06 usd per kilowatt hour, which is also achieved in 2017.
The U.S. department of energy's national renewable energy laboratory reported in August 2017, the statistics in the first quarter of 2017 the solar cell market conditions in the United States, each parts installation costs, large centralized power grid level the cost per watt of solar energy plan, stationary has dropped to $1.03, with single shaft where equipment system has also dropped to $1.11, below the $1 to say just around the corner.
And that is in the United States in terms of the weighted, if single theory states that a single axis where equipment system using nonunion employees, more than half of the existing state of the installation costs less than $1, stationary and almost all states are now less than $1, only except sunshine condition worst of Alaska.
In commercial and residential section, each tile installation cost $1.85 and $1.85, but the hardware cost and large centralized solar energy project phase, the difference mainly comes from "soft" costs, marketing, operations, operation costs, such as administrative procedures.
In the first quarter of 2017, the soft cost of residential solar cells accounted for up to 68 percent, and the number of commercial applications reached 59 percent, far higher than the 41 percent of the large-scale centralized solar energy plan.
These soft costs can be further reduced through simplified administrative procedures and process improvement.
The ratio of soft costs is high, and the cost of hardware continues to decline.
First is the ascension of the solar cell conversion rate, let the cost per watt relative decline, 2010 commercial solar battery module, an average of only 13.8%, the conversion rate of 13.3% residential solar energy, as the conversion rate increase every year, in 2016, the commercial solar battery module, the average conversion rate increased to 17.5%, residential solar also increased to 16.2%.
Die of this also continued to decline, 2011 years after the solar cell module price collapse quickly, to decline to slow in 2013, but still continued to decline, and a wave of rapid decline, at the end of 2016 to 2017 in the first quarter, the solar cell module producer price has fallen to $0.35 per watt;
The inverter is $0.19, plus the cost of the structure and the electronic zero component is 0.11, $0.24, and the cost of the supply chain is $0.42.
The cost per watt of commercial and residential solar cells is still far higher than that of large centralized schemes, although it is limited by a high soft cost, but it is also quite striking compared to the past.
In 2010, residential solar cells cost $7.24 per watt of installation, and in 2017 they dropped to $2.8, down 61%.
The commercial portion also fell from $5.36 per watt in 2010 to $1.85 in 2017.
A high ratio of soft costs affects prices
For the average user, it is more concerned with the average cost of electricity per watt than the installation cost per watt.
In section homogenizing cost per kilowatt-hour, grid level of large centralized solar energy plan, New York City from the top of the sunshine, the cost is relatively poor, the sunshine environment, at the lowest cost relative alex here in phoenix, there is a gap, so take in Kansas city, Missouri for the index.
In the first quarter of 2017, after excluding the subsidy, the cost of each kilowatt-hour of electricity has been below the target of the target of the target of the target of the target of the target of the 2020 target of 6 cents, which was also reached 3 years earlier.
From 2010 to 2017, the cost of the large-scale centralized solar plan for the power grid has dropped by 78% to 79%, and from 2016 to 2017, it has dropped 20% to 23%, and is fast moving towards the 3-cent target of 2030.
Commercial solar plan although not up to standard, only down to 11 cents (3.3 t), target distance 2020 8 cents a little distance, but the decline is also quite fast, from 2010 to 2017 per KWH cost of homogenization plummeted 71% ~ 72%, from 2016 to 2017 reduced by 12% ~ 12%.
Residential solar energy is the biggest goal difference, down to 16 cents, a target of 10 cents for 2020 and 6 cents.
Residential solar drop too big, however, from 2010 to 2017 by 70%, but is limited by the ratio of soft cost is too high, reduce the slowing in the rate of in recent years, from 2016 to 2017 only fell by 5% ~ 6%.
Shoot day target reached ahead of time, can be said is not energy policy credit mostly, but the result of market trends, by the American experience shows that large centralized solar plan even without subsidies, has also is cheap energy, homogenizing per kilowatt-hour cost lower than that of many other power generation;
Commercial, residential, on the other hand, is limited by soft cost ratio on the high side, and relatively expensive, without subsidies is still unable to compete with the market, but instead USES the subsidies, many soft costs from the administrative application process, through policy to simplify or eliminate various bureaucratic procedures, to lower part of the soft costs.
Since the hardware part has been reduced to a certain proportion, how to reduce the soft cost will be an important factor for future commercial and residential solar energy cost reduction.