Last week's earnings announcement from Acorn Energy, Inc. (NASDAQ:ACFN) was disappointing to investors, with a sluggish profit figure. We did some analysis, and found that there are some reasons to be cautious about the headline numbers.

An Unusual Tax Situation

We can see that Acorn Energy received a tax benefit of US$613k. This is of course a bit out of the ordinary, given it is more common for companies to be paying tax than receiving tax benefits! Of course, prima facie it's great to receive a tax benefit. However, our data indicates that tax benefits can temporarily boost statutory profit in the year it is booked, but subsequently profit may fall back. In the likely event the tax benefit is not repeated, we'd expect to see its statutory profit levels drop, at least in the absence of strong growth. While we think it's good that the company has booked a tax benefit, it does mean that there's every chance the statutory profit will come in a lot higher than it would be if the income was adjusted for one-off factors.

Note: we always recommend investors check balance sheet strength. Click here to be taken to our balance sheet analysis of Acorn Energy.

Our Take On Acorn Energy's Profit Performance

As we have already discussed Acorn Energy reported that it received a tax benefit, rather than paying tax, in the last year. Given that sort of benefit is not recurring, a focus on the statutory profit might make the company seem better than it really is. Because of this, we think that it may be that Acorn Energy's statutory profits are better than its underlying earnings power. In further bad news, its earnings per share decreased in the last year. Of course, we've only just scratched the surface when it comes to analysing its earnings; one could also consider margins, forecast growth, and return on investment, among other factors. Keep in mind, when it comes to analysing a stock it's worth noting the risks involved. In terms of investment risks, we've identified 3 warning signs with Acorn Energy, and understanding these bad boys should be part of your investment process.

Today we've zoomed in on a single data point to better understand the nature of Acorn Energy's profit. But there is always more to discover if you are capable of focussing your mind on minutiae. Some people consider a high return on equity to be a good sign of a quality business. While it might take a little research on your behalf, you may find this free collection of companies boasting high return on equity, or this list of stocks with significant insider holdings to be useful.

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.