Yes, every season I grow ~20kg of vegetables on a 15m^2 balcony (tomatoes, cucumbers, peppers, celery, various herbs). They are grown vertically on a trellis system, using 11 liter hydroponic "bato" buckets and recycled/reused perlite (sterilized). Nothing fancy.
The main energy input is the chemical fertilizer. Electricity to run pumps/valves etc is very minimal and probably amounts to 5-6 KWh over the season. I use synthetic fertilizers but avoid insecticides/fungicides, instead opting to use biocontrols (shout out to Koppert! https://www.youtube.com/watch?v=AFPkAQUfYvo).
The future of agriculture (excluding cereal crops, which I dream might be replaced by synthetic starches one day) probably looks something similar to: https://www.youtube.com/watch?v=a_pR_HihCVo