How to analyze the power of OpenCL code in Arria 10

I am glad it worked for you on Arria 10, at least it is better than nothing. If you sort the OpenCL output folder by date, you should find a file named "*.pow.summary" which includes breakdown of static, dynamic and I/O power. You should also be able to find the full power report.

27.9 Watts is not very high for Arria 10, but that largely depends on the size, activity and operating frequency of your design. I have pushed close to 70 Watts on Arria 10 with large designs running at above 300 MHz. You should note that this power estimation is highly innacurate since it does not consider signal activity (assumes a default 12.5% switching rate), and only includes the FPGA power, while there are a lot of components on the board, especially the DDR memory, which add quite a bit to the power consumption.