A smart-charging app called ev.energy is offering a $50 Amazon gift card for the first 100 Tesla drivers to sign up to its Beta testing program in Texas before Dec 31st. The app is free to use, and works with ERCOT and any retailer to automatically save drivers money on their time-of-use rates and align EV charging to renewable generation. It's got 5★ reviews from EV drivers in California, now they're launching in Texas. Sign-up form is here: https://ev.energy/texas