Tom Linebarger
Chairman and Chief Executive Officer at Cummins
Thank you, Jack, and good morning, welcome to everybody. I'll start with a summary of our third quarter financial results and our market trends by region, and finish with a discussion of our outlook for the rest of 2021. Mark will then take you through more details of both our third quarter financial performance and our forecast for this year.
Demand remained strong in the third quarter as the global economy continued to improve, driving strong sales growth across most businesses and regions outside of China. In China, industry-wide sales of trucks and construction equipment is slowed sharply, but in line with our expectations. We remain encouraged by the economic trends in our markets, which point to strong end user demand extending into 2022. We also continue to see orders for our products outpace our competition as a result of their strong performance in the field. Unfortunately, supply chain constraints continue to significantly impact our ability to produce and ship products, driving up costs and limiting sales growth in the short run. These supply chain constraints are impacting our OEM customers in much the same way.
Before getting further into our results, I want to take a moment to highlight a couple of strategic milestones in the evolution of our next-generation products and technologies. In October, we announced that we will bring a 15 liter natural gas engine for heavy duty trucks to the North American market. This engine was launched earlier this year in China and has been well received in the market, demonstrating excellent performance and reliability thus far. The 15 liter natural gas engine is an important part of our path to zero-emission strategy by offering a significant reduction in both criteria pollutants and greenhouse gases in the product that's available today, and utilizes existing infrastructure. Equally exciting that this engine is designed to accept a range of gaseous and renewable fuels, including hydrogen in the future. In fact, all of Cummins' engine platforms are being designed with the same fuel flexibility. At the same time, we are working with Chevron and others in the energy industry to increase the availability of renewable natural gas and other renewable fuels to ensure infrastructure is in place to meet our customers' needs.
We also signed a letter of intent to establish a joint venture between Rush Enterprises and Cummins, which will produce Cummins branded natural gas fuel delivery systems for the commercial vehicle market in North America, combining the strengths of momentum, fuel technologies, compressed natural gas, fuel delivery systems and Cummins' powertrain expertise, along with the engineering and support infrastructure of both companies. These are important steps in expanding our portfolio of power solutions options to help customers meet their business goals and operational objectives, while also meeting increasingly stringent emission standards and achieving our customers' sustainability goals.
Now I will comment on the overall company performance for the third quarter of 2021 and cover some of our key markets. Revenues for the third quarter of 2021 were $6 billion, an increase of 17% compared to the third quarter of 2020. EBITDA was $862 million or 14.4%, compared to $876 million or 17.1% a year ago. Higher freight and logistics expenses, rising material costs and other manufacturing inefficiencies associated with the ongoing supply chain challenges in our industry, more than offset the benefits of global volume increases compared to the third quarter of last year. As a reminder, EBITDA in the third quarter of last year was helped by temporary salary reductions, which lowered our cost by approximately $90 million.
Our third quarter revenues in North America grew 13% to $3.4 billion, driven by higher engine and components shipments across the heavy and medium-duty on-highway markets. Industry production of heavy-duty trucks in the third quarter was 55,000 units, an increase of 10% from 2020 levels. Cummins sold 22,000 heavy-duty engines in the same period, up 30% from 2020 levels. Industry production of medium-duty trucks was 26,000 units in the third quarter, a decrease of 5% from 2020 levels, while our unit sales -- our Cummins unit sales were 23,000, an increase of 25% in 2020.
We shipped 43,000 engines to Stellantis for use in the RAM pickups in the third quarter of this year, a decrease of 2% from 2020 levels, but still a very strong quarter. Revenues for power generation grew by 2% due to higher demand in recreational vehicle, standby power and data center markets. Our international revenues increased by 22% in the third quarter of 2021, compared to a year ago. Third quarter revenues in China, including joint ventures were $1.5 billion, a decrease of 11% due to lower demand in the medium and heavy-duty truck markets. Industry demand for medium and heavy-duty trucks in China was 217,000 units, a decrease of 53% as the industry works through the national Standard 5 truck inventory on hand and lower demand for newer higher cost national Standard 6 units.
Our unit sales in units, including joint ventures were 40,000, a decrease of 49% versus the third quarter last year. Our light-duty engine sales were 33,000, a decrease of 40% driven by supply chain constraints and weaker market demand. Industry demand for excavators in China in the third quarter were 56,000 units, a decrease of 15% from 2020 levels. Our units that Cummins sold were 88,600 [Phonetic] units, a decrease of 20%. Power generation sales in China increased 52% in the third quarter compared to a year ago, based on strong demand in data centers and other backup power applications. We continue to hold a market leading position in the data center segment in China, driven by strong end user relationships and a compelling product offering.
Third quarter revenues in India, including joint ventures were $520 million, an increase of 76% from the third quarter of 2020. Industry truck production increased by 120%, while our shipments increased 135% as our joint venture partner continued to gain share. Demand for power generation and construction equipment also rebounded strongly in the third quarter compared to a very low base a year ago. In our Power Systems markets, industrial engine revenue increased 33% in the third quarter compared to the same period last year, driven by mining and oil and gas. In Brazil, our revenues increased 26%, driven by increased demand across all end markets.
Now, let me quickly cover our outlook for the remainder of 2021. Based on our current forecast, we expect our revenue to be at the lower end of our guidance are up approximately 20% versus 2020. EBITDA is now expected to be approximately 15%, below our previous guidance of 15.5% to 16% of sales. Our expected EBITDA margins are lower because of the persistence of the supply chain constraints and disruptions, which are now exacerbated by escalating material and freight prices.
We've lowered our forecast for industry production of heavy-duty trucks in North America to 228,000 units, up 25% compared to 2020, but below our prior guidance of 264,000 units. This is again due to the supply chain constraints impacting our customers rather than a lack of end-user demand. In the medium-duty truck market, we are decreasing our forecast for industry production to 118,000 units, up 15% year-over-year, but below our prior guidance of 134,000 units. We expect our engine shipments for pickup trucks in North America to be up 25% compared to 2020, an increase of 7.5% from our expectations three months ago.
In China, we continue to expect domestic on-highway demand to decline from record levels a year ago. Our 2021 outlook for medium and heavy-duty truck market demand is 1.65 million units, and our 2021 outlook for light duty truck market is 2 million units. Both unchanged from our previous guidance. We continue to expect industry sales of excavators to be flat with the record levels achieved in 2020, and unchanged from our previous guidance.
In India, we anticipate industry demand for trucks to be up 75%, compared to levels experienced in 2020. And our other businesses are showing promising growth due to continued infrastructure investment. This is also unchanged from previous guidance. We now expect demand for mining engines to increase 60% in 2021, up from our expectation of 45% three months ago based on continued strength in commodity prices. We continue to expect global power generation revenue to increase 15% primarily driven by the data center and recreational vehicle markets.
Summing up the quarter, strong demand across many of our markets drove continued sales growth in the third quarter. Despite this strong demand, supply chain constraints continue to significantly impact both our operations and those of our customers, resulting in higher material and logistics costs as well as capping revenue growth. We are working collaboratively with our customers and suppliers to navigate these challenges and position the company for better performance in 2022. Customers are recognizing the strong performance of our products, resulting in our sales growing faster than industry demand in a number of important markets. We continue to invest in bringing new technology to our customers, outgrowing our end markets and providing strong cash returns to our shareholders. The company expects to return over 75% of our operating cash flow to shareholders in 2021 in the form of dividends and share repurchases.
Thank you for your time today. And now let me turn it over to Mark.