What happened Shares of solar microinverter-maker -- and now a maker of battery storage for solar power systems, too -- Enphase Energy (NASDAQ: ENPH) stock jumped 4% in 1:20 p.m. EDT trading Monday. It's the company's newest business division -- batteries -- that is making headlines today. Image source: Getty Images. So what As the "world's leading supplier of microinverter-based solar and battery systems," Enphase announced this morning that it has expanded its battery business beyond its current markets of North America and Germany this month. Enphase has begun shipping Encharge battery storage systems to Belgium as well. In its press release, Enphase described Belgium as "a fast-growing solar market in Europe" and said it expects to receive "a warm reception for [its] all-in-one solution," which incorporates IQ 7 microinverters to translate direct current electricity into alternating current that can be used in customer homes. Enphase batteries are warranted for 10 years of use and can store as much as 42 kWh of power. Now what That's enough charge to power most homes for more than a day, and Enphase's announcement appears to be enough good news to power the stock higher today. Longer term, though, the stock still looks expensive at a valuation of 22 times trailing sales and more than 130 times trailing earnings. With Enphase stock up 50% this year, discretion may be the better part of value here, and investors might consider taking advantage of today's stock price rise to cash in some chips. 10 stocks we like better than Enphase Energy, Inc.When our award-winning analyst team has a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* They just revealed what they believe are the ten best stocks for investors to buy right now... and Enphase Energy, Inc. wasn't one of them! That's right -- they think these 10 stocks are even better buys. See the 10 stocks *Stock Advisor returns as of September 17, 2021 Rich Smith has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.Source