Inverter affect investment income

As an investor, the most concerned about is the rate of return. Zheng Gui standard that statistics from the current tender, the price of basic EP 8 ~ 10 yuan / Wp, the current system can be considered pre-investment projects with an average price of 11 yuan / W. Among them, the price of PV modules in the 4.2 to 4.7 yuan / W, inverter prices from 0.45 to 0.55 yuan / W, fixed the price at 0.5 yuan bracket / W or so. Modules, inverters, stand respectively of the total investment is about 40% the percentage, 4.5% and 4.5%.

From the perspective of the inverter, although its impact on power plants less initial cost, but ultimately a great impact on the generation capacity, thereby affecting investment returns. In other words, different performance grid connected inverter brings marginal investment yield huge difference.

Zheng Gui standard example: "Judging from the recent situation of each tender, as close to the cost line, winning the manufacturers price difference is generally 3 cents / W within, reflected in the system cost is 0.25% of the difference, but it will bring the system generating capacity difference at 1% due to marginal cost inverter output of the entire PV system is 40 times leverage, investments in the last three cents, the impact on yields will reach 400 percent. "

Zheng Gui mark appears by the inverter, resulting in different power plant generating capacity difference of a few percent of normal, even worse, the same one-megawatt power plant investigation difference of 20% -30% of the generating capacity.

Therefore, customers in the selection when the inverter should be careful to consider whether the product meets standards, security, power and certification requirements mandatory condition; meets dc to ac power inverter efficiency indicators, such as the maximum efficiency and European efficiency, MPPT efficiency, reliable indicators, as well as the initial purchase price and the scope of delivery and other performance indicators. "In addition to short-term cost-effective, more importantly, is to focus on the viability of the enterprise, choose long-term survival of the brand, the risk is relatively small."

"Product data sheet we will provide, and the business situation is more important if you want to invest not shrunk dramatically, than for corporate research study on twelve products is more important, this is our senior managers should do. "Zheng Gui marked concludes.