# What Does Energy Recovery, Inc.’s (NASDAQ:ERII) P/E Ratio Tell You?

Today, we’ll introduce the concept of the P/E ratio for those who are learning about investing. We’ll apply a basic P/E ratio analysis to Energy Recovery, Inc.’s (NASDAQ:ERII), to help you decide if the stock is worth further research. What is Energy Recovery’s P/E ratio? Well, based on the last twelve months it is 40.56. That means that at current prices, buyers pay \$40.56 for every \$1 in trailing yearly profits.

Check out our latest analysis for Energy Recovery

### How Do I Calculate A Price To Earnings Ratio?

The formula for price to earnings is:

Price to Earnings Ratio = Share Price ÷ Earnings per Share (EPS)

Or for Energy Recovery:

P/E of 40.56 = USD10.39 ÷ USD0.26 (Based on the year to September 2019.)

### Is A High Price-to-Earnings Ratio Good?

A higher P/E ratio means that buyers have to pay a higher price for each USD1 the company has earned over the last year. That isn’t necessarily good or bad, but a high P/E implies relatively high expectations of what a company can achieve in the future.

### Does Energy Recovery Have A Relatively High Or Low P/E For Its Industry?

One good way to get a quick read on what market participants expect of a company is to look at its P/E ratio. The image below shows that Energy Recovery has a higher P/E than the average (23.7) P/E for companies in the machinery industry.

Energy Recovery’s P/E tells us that market participants think the company will perform better than its industry peers, going forward. The market is optimistic about the future, but that doesn’t guarantee future growth. So further research is always essential. I often monitor director buying and selling.

### How Growth Rates Impact P/E Ratios

Generally speaking the rate of earnings growth has a profound impact on a company’s P/E multiple. If earnings are growing quickly, then the ‘E’ in the equation will increase faster than it would otherwise. That means unless the share price increases, the P/E will reduce in a few years. So while a stock may look expensive based on past earnings, it could be cheap based on future earnings.

Energy Recovery’s earnings per share fell by 59% in the last twelve months.

### A Limitation: P/E Ratios Ignore Debt and Cash In The Bank

The ‘Price’ in P/E reflects the market capitalization of the company. That means it doesn’t take debt or cash into account. Hypothetically, a company could reduce its future P/E ratio by spending its cash (or taking on debt) to achieve higher earnings.

Such expenditure might be good or bad, in the long term, but the point here is that the balance sheet is not reflected by this ratio.

### Energy Recovery’s Balance Sheet

Energy Recovery has net cash of US\$90m. This is fairly high at 16% of its market capitalization. That might mean balance sheet strength is important to the business, but should also help push the P/E a bit higher than it would otherwise be.

### The Bottom Line On Energy Recovery’s P/E Ratio

Energy Recovery’s P/E is 40.6 which is above average (19.0) in its market. The recent drop in earnings per share would make some investors cautious, but the relatively strong balance sheet will allow the company time to invest in growth. Clearly, the high P/E indicates shareholders think it will!

Investors should be looking to buy stocks that the market is wrong about. As value investor Benjamin Graham famously said, ‘In the short run, the market is a voting machine but in the long run, it is a weighing machine. So this free visualization of the analyst consensus on future earnings could help you make the right decision about whether to buy, sell, or hold.

Of course, you might find a fantastic investment by looking at a few good candidates. So take a peek at this free list of companies with modest (or no) debt, trading on a P/E below 20.

If you spot an error that warrants correction, please contact the editor at editorial-team@simplywallst.com. This article by Simply Wall St is general in nature. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. Simply Wall St has no position in the stocks mentioned.

We aim to bring you long-term focused research analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Thank you for reading.