While investors are still thinking about what stocks to buy now, renewable energy stocks are becoming the focus of attention. Most people believe that this part of the stock market has a lot of long-term growth potential. After all, as the climate crisis continues, although action is necessary during the outbreak. In particular, the world should reduce carbon consumption in order to combat the effects of global warming. Taken together, it is understandable if investors are bullish on renewable energy stocks.

Today's US stock market is full of budding renewable energy stocks. Some specialize in clean energy companies, such as Ates Solar (CSIQ.US) and Daquan New Energy (DQ.US). Such enterprises will directly benefit from the widespread adoption of solar energy in the entire industrial market. Now, the share prices of both companies are up more than 170% from their lows during the epidemic.

Now, the electric car industry seems to be driven by both American consumers and the federal government. As consumer demand is clearly on the rise, US President Joe Biden plans to spend billions of dollars on the infrastructure of electric vehicles in the United States. As a result of these positive factors, the US electric car sector is now continuing to gain momentum in the stock market. FFIE.US, which listed yesterday, was up more than 40 per cent at one point before trading.

To sum up, investors may be keen to invest in the global green wave. Based on this, the following four top renewable energy stocks will be the first choice.

Best renewable energy stocks to buy (or avoid) now

• Clean Energy Fuels Corporation (CLNE.US)

• General Motors (GM.US)

• Enphase Energy Inc. (ENPH.US)

• Xiaopeng Automobile (XPEV.US)

Clean Energy Fuels Corporation (CLNE.US)

Clean Energy Fuel is one of the largest suppliers of clean fuel in the transportation market. The company is committed to transport decarbonization through the development and delivery of renewable natural gas (RNG). The company can actually reduce greenhouse gas emissions from thousands of cars. It also does this through a large network of gas stations operating in the United States and Canada. Clean Energy Fuel shares closed Thursday at $7.68 a share, up more than 200% over the past year.

In May, the company announced a new RNG contract as fleets across North America increasingly continue to use the company's clean, low-carbon fuel to power heavy and medium trucks. Chad Lindholm, vice president of Clean Energy Fuels, said the team should come to understand that RNG and natural gas engine technology are solutions that have been proven to significantly reduce harmful emissions and greenhouse gas emissions.

General Motors (GM.US)

General Motors is a multinational company that designs and manufactures cars and auto parts. In its latest growth strategy, announced earlier this year, the company said it would focus on advancing the all-electric future. It is worth noting that by 2025, the company plans to invest more than $25 billion in electric and self-driving car products. The company also plans to launch 30 new electric vehicles worldwide by the end of 2025. At the heart of its strategy is the Ultium battery platform, which will power everything from the mass market to high-performance cars. GM shares are now trading at $55.64 as of Thursday's close.

On July 9, 2021, the company announced that it would maintain a strong momentum in China in the second quarter. GM and its joint ventures in China delivered more than 750000 vehicles, up 5.2 per cent from a year earlier. Luxury and premium cars, SUVs/MPVs (including Cadillac CT5 and XT6) and Buick LaCrosse are the main drivers of this growth. Sales of the company's brands of new energy vehicles also showed strong performance this quarter.

GM also announced on July 2, 2021 that it would purchase lithium for the next generation of electric vehicle batteries from the United States through a low-carbon closed-loop process. Lithium is crucial to GM's plans to build more affordable and mileage electric vehicles.

Enphase Energy Inc. (ENPH.US)

Enphase Energy Inc. Is a renewable energy company and the world's leading supplier of solar + energy storage systems based on micro inverters. In addition, the company provides smart, easy-to-use solutions that connect solar power generation, storage and energy management to one platform. In addition, the company has shipped more than 34 million miniature inverters and approximately 1.5 million Enphase-based systems to more than 130 countries. As of Thursday's close, Enphase shares are now trading at $178.94. The company will announce its second quarter 2021 results after the close on July 27, 2021.

On Tuesday, Barclays Bank analyst Moses Sutton maintained his buy rating on Enphase. The analyst also set a target price of $217 for the company, up more than 20% from its current share price. In late June, the company launched the Encharge battery storage system in Germany, its first foray into the market outside the United States. Battery storage systems provide configurations from 3.5kWh to 42kWh, and you can choose to upgrade and extend the lifecycle through the system.

Xiaopeng Automobile (XPEV.US)

Now in the field of renewable energy, another well-known company is Xiaopeng Automobile. The Guangzhou-based electric car manufacturer focuses on the development and manufacture of electric vehicles. Currently, the company is one of the main players in China's vast electric vehicle market. Electric vehicle sales in China are likely to double this year, according to analysts at DB.US. It is worth noting that Xiaopeng's delivery volume in the second quarter seems to be in line with this huge growth. Earlier this month, the company announced that it had delivered 17398 cars, up 439 per cent from a year earlier. As of Thursday's close, Xiaopeng's shares were currently trading at $43.27.

At present, Xiaopeng does not seem to slow down in terms of operation. Just this week, the company announced the price range of its latest P5 smart car. At the low end of the market, Chinese consumers can buy the company's latest electric cars for as little as $24700 (160000 yuan). The move comes at a time when Tesla (TSLA.US) has just launched a cheap version of his Model Y EV, which retails for more than $38700. As Xiaopeng is hot because of its competitive pricing, it is understandable for investors to keep a close eye on Xiaopeng's shares.