I believe you can't connect ADE7757 directly to a wireless module. You will need an MCU to interface ADE7757 with an wireless module.
The ADE7757 supplies average real power information on the low frequency outputs F1 and F2. These outputs may be used to directly drive an electromechanical counter or interface with an MCU.
MCU will make Energy Measurement based on frequency output/pulse width of F1 and F2, while CF is used for calibration purpose.
You can then transmit this Energy Measured via Wireless Module.