Acorn Energy just reported their Q4 numbers and honestly, the results are pretty rough. Earnings dropped significantly compared to last year - they pulled in $1.07 million versus $5.23 million in the same quarter last year. That's a massive hit.

What's interesting is the per-share breakdown. EPS came in at $0.42 this quarter versus $2.08 last year, so shareholders definitely felt that one. Revenue tells a similar story - Acorn's top line fell 32.6% to $2.38 million from $3.53 million year-over-year. That's the kind of decline that makes you wonder what happened operationally.

So yeah, Acorn Energy is clearly going through a rough patch. The company's struggling across the board - lower revenue, lower earnings, lower per-share returns. Worth keeping an eye on if you're following the stock, but these are the kind of numbers that usually trigger some serious questions from investors.