Searched pop up outlet on Amazon. Requires 4" hole...

https://www.amazon.com/Automatic-Raising-Kitchen-Conference-Decoration/dp/B01N5249UY/ref=sr_1_6?keywords=Pop+Up+Outlet&qid=1572238915&sr=8-6

Here's another one...

https://www.amazon.com/Automatic-Raising-Type-Pop-Power-Socket-Outlet-US-Plug-USB-Ports-Conference-Room-Home-Decoration/dp/B07DMG6XZN/ref=sr_1_5?keywords=Pop+Up+Outlet&qid=1572238915&sr=8-5

"Unfortunately, the installers only have 3 or 4" bits for the Dekton and will not purchase any other sized bit."

Really? Buy the bit and tell them when you hand it to them you will remember this when people ask for recommendations.

Drill bits aside, if you haven't chosen your pop up outlets yet, we just installed a style by Lew Electric that we love. It's the PUFP-CT 20 amp pop up outlets with USB ports. The stone guys didn't have any trouble installing them-- you need an approximately 4" square cutout, if I remember correctly. Good luck!
http://www.lewelectric.com/kitchen-countertop/pufp-countertop-boxes/

Cutting a hole in Dekton isn’t as easy as cutting a hole in granite. I wouldn’t want to be doing that onsite. Dekton is so hard I would be concerned about damaging the countertop.

If it isn’t done by now, don’t do it. You’re going to get a crack. Figure out a different plan to comply with code. Pop ups generally do not.

Is there an update? We, too, are putting in Dekton counters but the huge windows come too close so we can't squeeze in outlets between the counter and window sill. Can you put these pop up outlets in Dekton? My GC has never installed pop-up outlets.

@smiles33 @live_wire_oakIf your cabinetry has not yet been ordered, you can make allowances for below-counter outlets in the cabinets. You can also install angled power strips underneath wall cabinetry or even underneath base cabinet countertop overhangs. I recommend Hardware Resources' Task Lighting slim profile units for this. You can also install in-drawer electrical connections, but those can be risky because the movement of the drawer isn't the safest thing to be continually forced on wiring in the back. These sometimes will not meet the code requirements for outlets at certain intervals. Electrical is really something that is hard to retrofit after cabinets have been planned, so if you're already past that point, your options are limited.

If you do choose a popup, Mockett has just recently released a beautiful version of the popup that Hubbell became so famous for, the short round style that is highly water resistant for kitchen applications, and I think Mockett currently has the best one one the market. It's not the original Mockett that's so tall, it is a new, much shorter one that is water resistant, the PSC103A/EE model, and there is also a version of this that is flush mount. Here's the link to the surface mount: https://www.mockett.com/power-communication-systems/pop-up-hideaway-collection/pcs103a-ee.html

If all else fails, look into a slim line power strip that would fit between countertop and window sill. You can get them as small as about 1 5/8" in height.

@smiles33, Sillites may be a solution between the counter and window. We used one on the side of our island where a regular outlet would not fit.

http://www.sillites.com/installation.php

Installers ended up coming back out and drilling the 3” holes for the pop ups and we did not have any issues. The plan was to countersink the outlets to be flush with the counter (Why we needed the 3.5”), but installers did not want to attempt. We had three holes drilled - two for pop up outlets and one for the disposal air switch. very happy we went with the pop ups.

Thanks, all. We have no upper cabinets on that wall, just 2 giant windows and the gas range with vent hood. I don't like the idea of outlets under the counter or in the cabinet drawers because these would frequently be used for small appliances (e.g., handheld mixer, coffee maker, Instant Pot, sous vide, etc.). The sillites is an interesting option if we can put it on the window sill.

Dora Akers: Thanks for chiming in with your experience. My plan was to have holes for the disposal air switch, instant hot water, and soap dispenser drilled into the countertop (in addition to the faucet), so I thought adding a pop-up wouldn't be that much harder. Others' comments about Dekton's likelihood of cracking is making me nervous....

In defense of the installers, I have heard (not sure if its true) that some fabricators make zero profit on the material and only make profit on the labor. If that's the case, I can see why they would charge extra to buy a bit that isn't standard.

@Dora Akers How are you liking your Dekton countertops and pop up outlets 3 years later? Does anything get into your outlets like liquids or crumbs? Thanks!

@Dora Akers will get her attention, @modernfun Use the @ first. : )