Last year I made a grow closet. I grow all the plants in a mix of coir and perlite. So it is actually a hydroponic setup.
I keep the jalapenos down, and now the fruits are getting bigger as you can see.
The bulbs are only 2x 15 watt LED. I try to keep the power consumption down as much that i can. Just enough to set fruits on small plants. It Looks like it is working.