Shareholders in Enphase Energy (ENPH 3.80%) got the news they wanted to hear last night when the solar technology company reported its fourth-quarter financial results. Enphase stock is soaring today on the back of that report.

A business slowdown has led Enphase stock to drop nearly 50% over the past year. And that includes today's share price spike. The stock jumped over 20% this morning and remained higher by 18.8% as of 10:20 a.m. ET.

Enphase's CEO calls a bottom

That's because the company has seemingly called a bottom in its business and sees its fortunes reversing from here. High interest rates have hurt solar panel sales and resulted in bloated inventories in both North America and Europe. The company said sales in Europe declined 70% sequentially compared to the third quarter mainly due to lower shipments to manage high inventory levels at its distribution partners.

But on its conference call with investors Enphase CEO Badri Kothandaraman also said:

We have been managing through a period of slowdown in demand. We think Q1 could be the bottom quarter. Europe is already showing early signs of recovery, and we expect the non-California states to bounce back quickly.

A solar inflection point

With the stock having been in free fall over the past year, that's all that investors needed to hear, and it explains the pop in Enphase stock today. Enphase expects demand for its solar products to improve throughout 2024. But the turnaround won't be immediate.

The company expects revenue in the first quarter to be flat or slightly down from the fourth quarter. That would represent a sharp decline compared to the first quarter of 2023. But investors heard what they wanted to hear: That the business may have bottomed and an inflection point is here. That was enough to generate an almost 20% jump today.