What is the expected growth of organic tenant billings in Europe in the low single-digit range
bile data usage being a fraction of Lat Am numbers as a result. We've invested approximately $5 billion across the continent and have an average tenancy of around 1.5 on our portfolio of nearly 19,000 sites, which are yielding roughly 11%. Importantly, we've partnered with key telecom operators like Vodafone, MTN and Airtel to bring enhanced connectivity to hundreds of millions of people. With extremely limited fixed-line penetration, young tech-savvy populations and governments committed to modernizing economies through connectivity, we expect mobile broadband to play a foundational role in Africa's growth story over the next decade-plus.
We also anticipate the continued organic growth of our new build program, to which we expect to construct a little over 1,000 sites this year. And our ongoing business development efforts will enable us to build on the strong foundation we've created in Africa as we deliver solid growth and increasing returns over the long term. At the same time, we are making substantial progress on our commitment to reduce the mobile industry's carbon footprint through our innovative power and fuel program. In African markets, where grid power in many areas tends to be unreliable, we are now deploying next-generation greener technologies, including lithium-ion batteries and solar solutions.
We expect to invest more than $60 million in 2020 to enhance the uptime performance of our sites in the region, while reducing greenhouse gas emissions after deploying in excess of $100 million over the last few years. Not only do these initiatives benefit our tenants, through higher uptimes and more efficient operating capabilities, but also they represent a critical part of our commitment to being a responsible corporate citizen. These investments have helped enable us to reduce diesel consumption by more than 25% from 2017 to 2019 across our global footprint after normalizing for portfolio growth. Meanwhile, in Europe, where we have nearly 5,000 sites between Germany and France and recently entered Poland by acquiring a handful of towers, networks are at a fairly mature stage, with 4G having been broadly deployed over the last decade.
Organic tenant billings growth has been modest for us, is expected in the low single-digit range, and new build opportunities have been somewhat limited. Despite this, we drove NOI yields of 8% across our European asset base as of Q2, largely as a result of the price discipline we displayed when we acquired these assets. We tend to think of our initial investments in the region as beachfront properties, allowing us to have a good position to evaluate other potential opportunities. Consequently, we continue to look for ways to expand our European portfolio but only at valuations that, with underlying growth expectations, allow us to hit our required return thresholds.
Our entry into Poland, although on a small scale initially, is an example of our continued focus on finding macro tower portfolios poised for sustainable growth in markets with attractive regulatory frameworks, support of regulators and vibrant wireless sectors, all at sensible valuations. And finally, moving to India, where we will have invested over $5 billion pro forma for redeeming our minority interest, we believe the wireless industry has now completed a much-needed and long-awaited consolidation to enable the deployment of 4G technology throughout the country by the remaining carriers. Through this process, we've experienced high levels of churn, which is reflected in our current 8% NOI yield. Although I'd note that the more than $400 million in cash settlement payments we received from Tata are not incorporated in that number for it to be higher.
More recently, there have been pricing increases by all of the carriers in the marketplace, while the telecom regulator has indicated that it intends to be supportive of the carriers through rational spectrum policies, and the Indian government continues to stress its Digital India initiative. The key near-term issue that needs to get supported out in the marketplace 
bile data usage being a fraction of Lat Am numbers as a result. We've invested approximately $5 billion across the continent and have an average tenancy of around 1.5 on our portfolio of nearly 19,000 sites, which are yielding roughly 11%. Importantly, we've partnered with key telecom operators like Vodafone, MTN and Airtel to bring enhanced connectivity to hundreds of millions of people. With extremely limited fixed-line penetration, young tech-savvy populations and governments committed to modernizing economies through connectivity, we expect mobile broadband to play a foundational role in Africa's growth story over the next decade-plus.
We also anticipate the continued organic growth of our new build program, to which we expect to construct a little over 1,000 sites this year. And our ongoing business development efforts will enable us to build on the strong foundation we've created in Africa as we deliver solid growth and increasing returns over the long term. At the same time, we are making substantial progress on our commitment to reduce the mobile industry's carbon footprint through our innovative power and fuel program. In African markets, where grid power in many areas tends to be unreliable, we are now deploying next-generation greener technologies, including lithium-ion batteries and solar solutions.
We expect to invest more than $60 million in 2020 to enhance the uptime performance of our sites in the region, while reducing greenhouse gas emissions after deploying in excess of $100 million over the last few years. Not only do these initiatives benefit our tenants, through higher uptimes and more efficient operating capabilities, but also they represent a critical part of our commitment to being a responsible corporate citizen. These investments have helped enable us to reduce diesel consumption by more than 25% from 2017 to 2019 across our global footprint after normalizing for portfolio growth. Meanwhile, in Europe, where we have nearly 5,000 sites between Germany and France and recently entered Poland by acquiring a handful of towers, networks are at a fairly mature stage, with 4G having been broadly deployed over the last decade.
 Organic tenant billings growth has been modest for us, is expected in the low single-digit range, and new build opportunities have been somewhat limited. Despite this, we drove NOI yields of 8% across our European asset base as of Q2, largely as a result of the price discipline we displayed when we acquired these assets. We tend to think of our initial investments in the region as beachfront properties, allowing us to have a good position to evaluate other potential opportunities. Consequently, we continue to look for ways to expand our European portfolio but only at valuations that, with underlying growth expectations, allow us to hit our required return thresholds.
Our entry into Poland, although on a small scale initially, is an example of our continued focus on finding macro tower portfolios poised for sustainable growth in markets with attractive regulatory frameworks, support of regulators and vibrant wireless sectors, all at sensible valuations. And finally, moving to India, where we will have invested over $5 billion pro forma for redeeming our minority interest, we believe the wireless industry has now completed a much-needed and long-awaited consolidation to enable the deployment of 4G technology throughout the country by the remaining carriers. Through this process, we've experienced high levels of churn, which is reflected in our current 8% NOI yield. Although I'd note that the more than $400 million in cash settlement payments we received from Tata are not incorporated in that number for it to be higher.
More recently, there have been pricing increases by all of the carriers in the marketplace, while the telecom regulator has indicated that it intends to be supportive of the carriers through rational spectrum policies, and the Indian government continues to stress its Digital India initiative. The key near-term issue that needs to get supported out in the marketplace 