We got solar panels on our roof linked up to CLP very recently, we are still waiting for final sign off from EMSD and it's been great.
The change in the regulations so that the solar panels can cover 50% of a village house roof with a maximum clearance of 2.5m (essentially a legal waterproof canopy over 50% of your roof, rather than lying on the floor making the roof unusable as before) and the good FiT(feed in tariff rate of $5) has meant a significant increase in recent applications. So the CLP process is a bit backlogged, took I think 2 months from when our solar panels were up until CLP installed the Smartmeter etc. Apparently they are hiring more people to help but not sure when that will make a difference, so you might have some delays between installation and actually getting hooked up to the grid like us.
The contract we have with CLP is 15 years with the $5 FiT rate, and the solar panels are also guaranteed for 15 years. Was relatively expensive to install, approx 150,000, but it should take 4 years to recover costs and then you have 11 years pure profit at the guaranteed rate. (Incidentally the highest FiT rate in the world at the moment).
The contractor we used did a really good job of the construction, a bit useless at keeping us up to date with the timeline change, but overall fairly responsive etc by whatsapp. They did everything from start to hopefully the finish, with EMSD in the next few days so that has been super simple.
Anyway, drop me a PM if you want the contractors details and have any questions. We are also in Lantau (I'm assuming by your name you are too).