Ranking_programming_languages_by_energy_efficiency_evaluation.ods - Guidebook for Energy Efficiency Evaluation, Measurement & Verification (EM&V Guidebook) to help state, local, and tribal air and energy officials—as well as key stakeholders such as utility EE implementers—take steps to learn about, establish, or refine their EM&V approaches. 1.1.1. Use by Air Officials

 
1. JavaScript. JavaScript is one of the world’s most popular programming languages on the web. Using JavaScript, you can build some of the most interactive websites. Also, it is one of the most demanding languages in programming as per recent reports by Stack Overflow.. Number for applebee

The OECD DAC Network on Development Evaluation (EvalNet) has defined six evaluation criteria – relevance, coherence, effectiveness, efficiency, impact and sustainability – and two principles for their use. These criteria provide a normative framework used to determine the merit or worth of an intervention (policy, strategy, programme ...Jul 22, 2020 · Here are the metrics we use to build an overall ranking of programming language popularity. The IEEE Spectrum Top Programming Languages app synthesizes 11 metrics from eight sources to arrive at ... Energy Efficiency Policies and Programs. Energy efficiency policies and programs can help drive the implementation of projects that minimize or reduce energy use during the operation of a system or machine and/or production of a good or service. Resources related to different types of energy efficiency policies and programs are available below.Such tables illustrate that languages like C, Rust, C++, Pascal, and others are the most eco-friendly and consume the least energy. However, little is shown about how these rankings were produced. RedMonk uses a blend of data from GitHub and Stack Overflow to come up with its semi-annual language rankings. The top 10 languages in RedMonk's latest rankings are: JavaScript. Python. Java. PHP ...The lambda calculus, developed in the 1930s by Alonzo Church, is a formal system of computation built from function application. In 1937 Alan Turing proved that the lambda calculus and Turing machines are equivalent models of computation, [36] showing that the lambda calculus is Turing complete. Lambda calculus forms the basis of all functional ...This paper compares a large set of programming languages regarding their efficiency, including from an energetic point-of-view. Indeed, we seek to establish and analyze different rankings for programming languages based on their energy efficiency.#software: the choice of language is not without consequences A study place in order C, Pascal, Ada as the least energy consuming https://lnkd.in/eFUyvZvX by…Oct 25, 2021 · However, the question is hard to answer as many factors creep while measuring power consumption. This includes the quality of the compiler, libraries used, etc. However, the researchers were able to separate energy use by CPU or DRAM utilisation, determining that the CPU consumed the majority of power, about 88.94% on average, and the remaining ... Investment in efficiency is projected to fall 9% in 2020. Travel restrictions and lockdowns are having major impacts on long-distance and urban transport. Transport sector energy consumption is projected to fall by 10% in 2020 compared with 2019, including an 11% drop in oil consumption of around 6 million barrels a day.#software: the choice of language is not without consequences A study place in order C, Pascal, Ada as the least energy consuming https://lnkd.in/eFUyvZvX by…This paper presents a study of the runtime, memory usage and energy consumption of twenty seven well-known software languages. We monitor the performance of such languages using ten different programming problems, expressed in each of the languages. Our results show interesting findings, such as, slower/faster languages consuming less/more energy, and how memory usage influences energy ...Datacenters make up 1% of the world's energy consumption, amounting to about 200 terawatt hours of energy a day, and the programming languages used can also impact energy consumption.The OECD DAC Network on Development Evaluation (EvalNet) has defined six evaluation criteria – relevance, coherence, effectiveness, efficiency, impact and sustainability – and two principles for their use. These criteria provide a normative framework used to determine the merit or worth of an intervention (policy, strategy, programme ...Ranking programming languages by energy efficiency R Pereira, M Couto, F Ribeiro, R Rua, J Cunha, JP Fernandes, J Saraiva Science of Computer Programming, 102609 , 2021 described in Section 2.2) to analyze the energy efficiency of 27 languages and (almost) 270 programs. We have also extended it in order to monitor memory consumption, as well. This paper is organized as follows: Section 2 exposes the detailed steps of our methodology to measure and compare energy efficiency in software languages, followed by a pre-Jul 26, 2016 · After two years in second place, C has finally edged out Java for the top spot. Staying in the top five, Python has swapped places with C++ to take the No. 3 position, and C# has fallen out of the ... Feb 1. This is a blog post-version of the recent live talk of João Saraiva in the clean-IT openXchange series. In his live talk, Saraiva explained the methods and results of their famous study ...Jul 22, 2020 · Our default ranking is weighted toward the interests of an IEEE member, and looking at the top entries, we see that Python has held onto its comfortable lead, with Java and C once again coming in ... 1.4.2 Programming Method(ologie)s: Advances in methods of programming also have influenced language design, of course. Refinements in thinking about flow of control led to better language constructs for selection (i.e., if statements) and loops that force the programmer to be disciplined in the use of jumps/branching (by hiding them). May 5, 2021 · Using concepts from economics, efficiency can also be defined as the maximization of the benefit-to-cost ratio. Although communication can bring diverse benefits (social status, aesthetic pleasure, etc.), the main focus of most current studies on efficiency is on the successful transfer of information through a noisy communication channel, which is studied from an information theoretic ... Aug 16, 2022 · Broad adoption of Rust could reduce energy consumption of compute demands by a conservatively estimated 50%, Amazon wrote. Rust delivers the energy efficiency of the C programming language ... The Department of Computer Science and Engineering (CSE) offers undergraduate and graduate programs of study in Computer Science , Computer Science and Business, and Data Science, along with research opportunities in these fields. Computer science, the core of includes the study of computer algorithms, software systems, and the effective use of ... This is the continuation of this 2017 paper: https://www.researchgate.net/publication/320436353_Energy_efficiency_across_programming_languages_how_do_energy_time_and_memory_relate There are new measurements and evaluations based on CLBG (as before), but now also based on Rosetta Code. Such tables illustrate that languages like C, Rust, C++, Pascal, and others are the most eco-friendly and consume the least energy. However, little is shown about how these rankings were produced. Feb 1, 2023 · Feb 1. This is a blog post-version of the recent live talk of João Saraiva in the clean-IT openXchange series. In his live talk, Saraiva explained the methods and results of their famous study ... Energy efficiency activities between 2010 and 2012 resulted in enough energy savings to power nearly 800,000 homes for a year and cut carbon dioxide emissions by 5.3 million tons, the equivalent of removing more than 1 million cars from California’s roads. The CPUC regulates ratepayer-funded energy efficiency programs.However, the question is hard to answer as many factors creep while measuring power consumption. This includes the quality of the compiler, libraries used, etc. However, the researchers were able to separate energy use by CPU or DRAM utilisation, determining that the CPU consumed the majority of power, about 88.94% on average, and the remaining ...The 14 Best Programming Languages to Learn in 2023. 1. Python. Python is an open-sourced, general-purpose programming language. When it comes to Python applications, you have a lot of choices, as it’s widely used for web development, scientific computing, artificial intelligence, data analysis, and more.Jun 9, 2015 · What's the Most Efficient Language? It's 2025, and alien explorers from a distant planet are set to make first contact with Earth. Conveniently for us, they have a universal translator. Unfortunately, for us, they've intercepted far too many episodes of Jersey Shore and have a skewed perception of our species. So, in an effort to put humanity's ... 1.4.2 Programming Method(ologie)s: Advances in methods of programming also have influenced language design, of course. Refinements in thinking about flow of control led to better language constructs for selection (i.e., if statements) and loops that force the programmer to be disciplined in the use of jumps/branching (by hiding them).Speed comparison of programming languages. This projects tries to compare the speed of different programming languages. In this project we don't really care about getting a precise calculation of pi. We only want to see how fast are the programming languages doing. It uses an implementation of the Leibniz formula for π to do the comparison. Such tables illustrate that languages like C, Rust, C++, Pascal, and others are the most eco-friendly and consume the least energy. However, little is shown about how these rankings were produced. Feb 11, 2022 · What the study did is implement 10 benchmark problems in 27 different programming languages and measure execution time, energy consumption, and peak memory use. C and Rust significantly outperformed other languages in energy efficiency. In fact, they were roughly 50% more efficient than Java and 98% more efficient than Python. Investment in efficiency is projected to fall 9% in 2020. Travel restrictions and lockdowns are having major impacts on long-distance and urban transport. Transport sector energy consumption is projected to fall by 10% in 2020 compared with 2019, including an 11% drop in oil consumption of around 6 million barrels a day. Recent studies found that the most widely used programming languages in research, such as R and Python 95, tend to be the least energy-efficient ones 96,97, and, although it is unlikely that ...Ranking programming languages by energy efficiency R Pereira, M Couto, F Ribeiro, R Rua, J Cunha, JP Fernandes, J Saraiva Science of Computer Programming, 102609 , 2021 The idea transmuted over to software programming languages—surely a faster language was a greener one, the logic went. That all changed in 2017 thanks to a group of researchers in Portugal who use what’s called the Computer Language Benchmarks Game (CLBG) as a way of ranking software languages in terms of energy efficiency.Aug 9, 2021 · RedMonk uses a blend of data from GitHub and Stack Overflow to come up with its semi-annual language rankings. The top 10 languages in RedMonk's latest rankings are: JavaScript. Python. Java. PHP ... This paper compares a large set of programming languages regarding their efficiency, including from an energetic point-of-view. Indeed, we seek to establish and analyze different rankings for programming languages based on their energy efficiency.RedMonk uses a blend of data from GitHub and Stack Overflow to come up with its semi-annual language rankings. The top 10 languages in RedMonk's latest rankings are: JavaScript. Python. Java. PHP ...Algorithmic efficiency. In computer science, algorithmic efficiency is a property of an algorithm which relates to the amount of computational resources used by the algorithm. An algorithm must be analyzed to determine its resource usage, and the efficiency of an algorithm can be measured based on the usage of different resources.This is the continuation of this 2017 paper: https://www.researchgate.net/publication/320436353_Energy_efficiency_across_programming_languages_how_do_energy_time_and_memory_relate There are new measurements and evaluations based on CLBG (as before), but now also based on Rosetta Code.Energy efficiency is the use of less energy to perform the same task or produce the same result. Energy-efficient homes and buildings use less energy to heat, cool, and run appliances and electronics, and energy-efficient manufacturing facilities use less energy to produce goods. Energy efficiency is one of the easiest and most cost-effective ...Most popular programming languages to learn in 2023. The following list outlines a few of the most popular programming languages among software developers worldwide [ 2 ]. 1. JavaScript. According to a study by Statista, JavaScript is the most popular language to learn. JavaScript (JS) is a scripting language used to make websites and mobile ...Overviews of the energy efficiency programs reviewed for this chapter are provided in Table 6-2 and 6-3. Key findings drawn from these programs include: • Energy efficiency resources are being acquired on aver­ age at about one-half the cost of the typical new power sources, and about one-third of the cost of nat­ May 20, 2018 · For example, overall the C language turned out to be the fastest and also the most energy efficient. But in the benchmark test which involved scanning a DNA database for a particular genetic sequence, Rust was the most energy-efficient — while C came in third. May 5, 2021 · Using concepts from economics, efficiency can also be defined as the maximization of the benefit-to-cost ratio. Although communication can bring diverse benefits (social status, aesthetic pleasure, etc.), the main focus of most current studies on efficiency is on the successful transfer of information through a noisy communication channel, which is studied from an information theoretic ... Investment in efficiency is projected to fall 9% in 2020. Travel restrictions and lockdowns are having major impacts on long-distance and urban transport. Transport sector energy consumption is projected to fall by 10% in 2020 compared with 2019, including an 11% drop in oil consumption of around 6 million barrels a day. A comprehensive study on the energy efficiency of Java thread-safe collections. In Proceedings of ICSME, 2016. 48. Pinto G., Soares-Neto, F., and Castor, F. Refactoring for energy efficiency: A reflection on the state of the art. In Proceedings of GREENS, 2015. 49. Ribic, H. and Liu, Y.D. Energy-efficient work-stealing language runtimes. Speed comparison of programming languages. This projects tries to compare the speed of different programming languages. In this project we don't really care about getting a precise calculation of pi. We only want to see how fast are the programming languages doing. It uses an implementation of the Leibniz formula for π to do the comparison. Swift. Haskell. C#. Go. Dart. JavaScript. TypeScript. “This paper presents a study of the runtime, memory usage, and energy consumption of twenty-seven well-known software languages. We monitor ...But Python alone does not make a career. In our “Jobs” ranking, it is SQL that shines at No. 1. Ironically though, you’re very unlikely to get a job as a pure SQL programmer.This paper presents a study of the runtime, memory usage and energy consumption of twenty seven well-known software languages. We monitor the performance of such languages using ten different programming problems, expressed in each of the languages. Our results show interesting findings, such as, slower/faster languages consuming less/more energy, and how memory usage influences energy ...Home Energy Assessments. A home energy assessment, also known as a home energy audit, can help you understand the whole picture of your home's energy use, comfort, and safety. An assessment can help you determine how much energy your home uses, where your home is inefficient, and which problem areas and fixes you should prioritize to save ... This paper compares a large set of programming languages regarding their efficiency, including from an energetic point-of-view. Indeed, we seek to establish and analyze different rankings for programming languages based on their energy efficiency.Simon Fraser. Lecturer at Ulster University. 1w. Interesting (well to me anyhow) paper about the evaluation of the behaviour of the March and June versions of the ChatGPT 3.5 and 4. If we're going ...Home Energy Assessments. A home energy assessment, also known as a home energy audit, can help you understand the whole picture of your home's energy use, comfort, and safety. An assessment can help you determine how much energy your home uses, where your home is inefficient, and which problem areas and fixes you should prioritize to save ... Jun 3, 2018 · Motivation: Even though many studies examine the energy efficiency of hardware and embedded systems, those that investigate the energy consumption of software applications are still limited, and mostly focused on mobile applications. As modern applications become even more complex and heterogeneous a need arises for methods that can accurately assess their energy consumption. Goal: Measure the ... Oct 25, 2021 · However, the question is hard to answer as many factors creep while measuring power consumption. This includes the quality of the compiler, libraries used, etc. However, the researchers were able to separate energy use by CPU or DRAM utilisation, determining that the CPU consumed the majority of power, about 88.94% on average, and the remaining ... This paper compares a large set of programming languages regarding their efficiency, including from an energetic point-of-view. Indeed, we seek to establish and analyze different rankings for programming languages based on their energy efficiency.Our default ranking is weighted toward the interests of an IEEE member, and looking at the top entries, we see that Python has held onto its comfortable lead, with Java and C once again coming in ...The interest towards efficiency as a universal principle has only recently re-emerged due to the development of large, richly annotated corpora, which allow new forms of quantitative cross-linguistic investigation. An important role is also played by cutting-edge statistical methods, which include correlation analysis, regression, and computer ...Energy Efficiency in Programming Languages Checking Energy Consumption in Programming Languages Using the Computer Language Benchmark Game as a case study. What is this? This repo contains the source code of 10 distinct benchmarks, implemented in 28 different languages (exactly as taken from the Computer Language Benchmark Game).Developed at Google in 2007, Go is a top-tier programming language. What makes Go really shine is its efficiency; it is capable of executing several processes concurrently. And as far as programming languages go, it has an extensive “vocabulary,” meaning it can display more information than other languages.Energy efficiency across programming languages: how do energy, time, and memory relate?. In Proceedings of the 10th ACM SIGPLAN International Conference on Software Language Engineering (pp. 256 ...Energy Efficiency in Programming Languages Checking Energy Consumption in Programming Languages Using the Computer Language Benchmark Game as a case study. What is this? This repo contains the source code of 10 distinct benchmarks, implemented in 28 different languages (exactly as taken from the Computer Language Benchmark Game). Swift. Haskell. C#. Go. Dart. JavaScript. TypeScript. “This paper presents a study of the runtime, memory usage, and energy consumption of twenty-seven well-known software languages. We monitor ...Feb 21, 2022 · Datacenters make up 1% of the world's energy consumption, amounting to about 200 terawatt hours of energy a day, and the programming languages used can also impact energy consumption. Our default ranking is weighted toward the interests of an IEEE member, and looking at the top entries, we see that Python has held onto its comfortable lead, with Java and C once again coming in ...Feb 3, 2023 · In 2023, Java claims the No. 3 spot in terms of the most in-demand programming languages. This object-oriented language is free to use and can run on all platforms. It’s often used in application and web development, and it’s also used on the backend of big-name sites like Google, YouTube, and Amazon. If you’re just learning how to code ... Our default ranking is weighted toward the interests of an IEEE member, and looking at the top entries, we see that Python has held onto its comfortable lead, with Java and C once again coming in ...Sep 5, 2023 · The Football Power Index (FPI) is a measure of team strength that is meant to be the best predictor of a team's performance going forward for the rest of the season. FPI represents how many points ... 👉 Ranking #programmingLanguages by #energy #efficiency 🤔 Impressive work !👏 ⬇️⬇️⬇️ Rui Pereira, et all, Ranking programming languages by energy efficiency, Science of Computer ... The OECD DAC Network on Development Evaluation (EvalNet) has defined six evaluation criteria – relevance, coherence, effectiveness, efficiency, impact and sustainability – and two principles for their use. These criteria provide a normative framework used to determine the merit or worth of an intervention (policy, strategy, programme ...Home Energy Assessments. A home energy assessment, also known as a home energy audit, can help you understand the whole picture of your home's energy use, comfort, and safety. An assessment can help you determine how much energy your home uses, where your home is inefficient, and which problem areas and fixes you should prioritize to save ...Feb 24, 2014 · Computer programming is the core of computer science curriculum. Several programming languages have been used to teach the first course in computer programming, and such languages are referred to as first programming language (FPL). The pool of programming languages has been evolving with the development of new languages, and from this pool different languages have been used as FPL at ... Feb 13, 2022 · 7. C#. For the last many years, C# is holding a good position in the list of top programming languages of almost every index. The language is ranked at 4th and 5th position at TIOBE and PYPL index respectively. On GitHub Language Rankings, it holds a place at the #5 position consistently for the last two years. Feb 3, 2023 · In 2023, Java claims the No. 3 spot in terms of the most in-demand programming languages. This object-oriented language is free to use and can run on all platforms. It’s often used in application and web development, and it’s also used on the backend of big-name sites like Google, YouTube, and Amazon. If you’re just learning how to code ... Here are some notable findings: C and C++ consistently ranked among the most energy-efficient languages. Their low-level nature and direct access to system resources contribute to their efficiency ...Investment in efficiency is projected to fall 9% in 2020. Travel restrictions and lockdowns are having major impacts on long-distance and urban transport. Transport sector energy consumption is projected to fall by 10% in 2020 compared with 2019, including an 11% drop in oil consumption of around 6 million barrels a day.Depending on which factors are important for your project you will get a different ranking of possible languages for your project. Conclusion. There is no singular good way to rank programming languages. However whenever you encounter a list or ranking of programming languages just be aware of what techniques they used to create the list.Motivation: Even though many studies examine the energy efficiency of hardware and embedded systems, those that investigate the energy consumption of software applications are still limited, and mostly focused on mobile applications. As modern applications become even more complex and heterogeneous a need arises for methods that can accurately assess their energy consumption. Goal: Measure the ...A programming language is a system of notation for writing computer programs. [1] Most programming languages are text-based formal languages, but they may also be graphical. They are a kind of computer language . The description of a programming language is usually split into the two components of syntax (form) and semantics (meaning), which ...The TIOBE Programming Community index is an indicator of the popularity of programming languages. The index is updated once a month. The ratings are based on the number of skilled engineers world-wide, courses and third party vendors. Popular search engines such as Google, Bing, Yahoo!, Wikipedia, Amazon, YouTube and Baidu are used to calculate ...Computer programming is the core of computer science curriculum. Several programming languages have been used to teach the first course in computer programming, and such languages are referred to as first programming language (FPL). The pool of programming languages has been evolving with the development of new languages, and from this pool different languages have been used as FPL at ...May 1, 2021 · Ultimately, it is based on such comparisons that we propose a series of efficiency rankings, based on single and multiple criteria. Our results show interesting findings, such as how slower/faster languages can consume less/more energy, and how memory usage influences energy consumption. Ranking programming languages by energy efficiency R Pereira, M Couto, F Ribeiro, R Rua, J Cunha, JP Fernandes, J Saraiva Science of Computer Programming 205, 102609 , 2021 May 20, 2018 · For example, overall the C language turned out to be the fastest and also the most energy efficient. But in the benchmark test which involved scanning a DNA database for a particular genetic sequence, Rust was the most energy-efficient — while C came in third.

Java usage is widespread, with companies such as Google, Netflix, Uber, and Spotify using the language. Growing in popularity at a rate of 155%, Java is likely to retain its number one position for the foreseeable future. #2. Python. What this language is used for: Web development.. Call procedure

ranking_programming_languages_by_energy_efficiency_evaluation.ods

A programming language is a system of notation for writing computer programs. [1] Most programming languages are text-based formal languages, but they may also be graphical. They are a kind of computer language . The description of a programming language is usually split into the two components of syntax (form) and semantics (meaning), which ...Feb 11, 2022 · What the study did is implement 10 benchmark problems in 27 different programming languages and measure execution time, energy consumption, and peak memory use. C and Rust significantly outperformed other languages in energy efficiency. In fact, they were roughly 50% more efficient than Java and 98% more efficient than Python. Sep 5, 2023 · The Football Power Index (FPI) is a measure of team strength that is meant to be the best predictor of a team's performance going forward for the rest of the season. FPI represents how many points ... Towards a Green Ranking for Programming Languages. In Programming Languages: 21st Brazilian Symposium, SBLP 2017, Fortaleza, Brazil, September, 2017. Google Scholar Digital Library; Luis Cruz and Rui Abreu. 2017. Performance-based Guidelines for Energy Efficient Mobile Applications.But Python alone does not make a career. In our “Jobs” ranking, it is SQL that shines at No. 1. Ironically though, you’re very unlikely to get a job as a pure SQL programmer.Energy Efficiency in Programming Languages Checking Energy Consumption in Programming Languages Using the Computer Language Benchmark Game as a case study. What is this? This repo contains the source code of 10 distinct benchmarks, implemented in 28 different languages (exactly as taken from the Computer Language Benchmark Game).Request PDF | Ranking programming languages by energy efficiency | This paper compares a large set of programming languages regarding their efficiency, including from an energetic point-of-view.May 5, 2021 · Using concepts from economics, efficiency can also be defined as the maximization of the benefit-to-cost ratio. Although communication can bring diverse benefits (social status, aesthetic pleasure, etc.), the main focus of most current studies on efficiency is on the successful transfer of information through a noisy communication channel, which is studied from an information theoretic ... This paper compares a large set of programming languages regarding their e ciency, including from an energetic point-of-view. Indeed, we seek to estab-lish and analyze di erent rankings for programming languages based on their energy e ciency. The goal of being able to rank programming languages based Aug 29, 2023 · This year, Python doesn’t just remain No. 1 in our general “Spectrum” ranking—which is weighted to reflect the interests of the typical IEEE member—but it widens its lead. Python’s ... Energy efficiency is the use of less energy to perform the same task or produce the same result. Energy-efficient homes and buildings use less energy to heat, cool, and run appliances and electronics, and energy-efficient manufacturing facilities use less energy to produce goods. Energy efficiency is one of the easiest and most cost-effective ...In this ranking, we can see the “greenest” and most efficient programming languages are: C, C+, Rust, and Java, although this last one shoots the memory usage. Energy: From this table, it is ...Python dominates as the de facto platform for new technologies. Stephen Cass. 24 Aug 2021. 3 min read. Shutterstock. Learn Python. That's the biggest takeaway we can give you from its continued ...Speed comparison of programming languages. This projects tries to compare the speed of different programming languages. In this project we don't really care about getting a precise calculation of pi. We only want to see how fast are the programming languages doing. It uses an implementation of the Leibniz formula for π to do the comparison.For a lot of programs, the biggest energy suck is between the chair and keyboard. Most low energy languages are harder to code with, hence require more energy up front. Ask how much developer time it took to get all those toy programs to run correctly. My guess is the Python code took 10-20% of the time the C code took to write.A programming language is a system of notation for writing computer programs. [1] Most programming languages are text-based formal languages, but they may also be graphical. They are a kind of computer language . The description of a programming language is usually split into the two components of syntax (form) and semantics (meaning), which ...Towards a Green Ranking for Programming Languages. In Programming Languages: 21st Brazilian Symposium, SBLP 2017, Fortaleza, Brazil, September, 2017. Google Scholar Digital Library; Luis Cruz and Rui Abreu. 2017. Performance-based Guidelines for Energy Efficient Mobile Applications.described in Section 2.2) to analyze the energy efficiency of 27 languages and (almost) 270 programs. We have also extended it in order to monitor memory consumption, as well. This paper is organized as follows: Section 2 exposes the detailed steps of our methodology to measure and compare energy efficiency in software languages, followed by a pre-Python is one of the most popular programming languages in the world. Dutch software company’s programming language index for 2021 also indicates that. But is it one of the most energy-efficient ....

Popular Topics