The extraction of energy from renewable sources is rapidly growing. The current pace of technological development makes it commercially viable to harness energy from sun, wind, geothermal and many other renewable sources. Because of the negative effects on the environment and the economy, conventional energy sources like natural gas, crude oil and coal are coming under political and economic pr...

fixed feed-in tariff An offer by government or a utility to purchase electricity from renewables producers at a fixed price, regardless of the producers’ costs of production. green (renewables) certificate A certificate, provided by a regulator to renewables producers for specified units of their electricity output; can be traded to other electricity producers who need it to meet their obligati...

China has become a major investor and constructor of electrical power plants in developing countries. However, the impacts China's overseas stations (COPSs) on countries hosting them are poorly understood. Here, novel method is proposed to evaluate influence COPSs 80 host First, their electricity consumption from 1971 2017 was estimated using data provided by World Bank, International Energy Ag...

Concerns related to climate change and security of energy supply is pushing various countries to make strategic energy planning decisions. In this regard, energy system modelling is an appropriate method to find out the utilization of current declining non-renewable energy resources and other possible scenarios. Consequently, it is available to consider various aspects of energy system decision...

With dramatic cost declines and performance improvements, both mini-hydropower and solar photovoltaics (PV) now serve as core options to meet the growing demand for electricity in underserved regions worldwide. We compare the net energy return on energy invested (EROI) of mini-hydropower and solar electricity using five existing mini-hydropower installations in northern Thailand with gridconnec...

renewable energy sources (res), especially wind power plants, have high priority of promotion in the energy policies worldwide. an increasing share of res and distributed generation (dg), should, as has been assumed, provide improvement in reliability of electricity delivery to the customers. paper presented here concentrates on electricity storage systems technologies and applications pinpoint...

Biomass, one of the most important renewable energies, is playing and will continue to play an important role in the future energy structure of the world. This article aims to analyze the position and role, assess the resource availability, discuss the geographic distribution, market scale and industry development, and present the policy options of biomass in China. The resource availability an...

The biggest challenges faced in big cities are greenhouse gas emission and growing energy needs. Efficient utilization of existing infrastructures has a prominent role in response to the challenges. Energy hub approach embraces performance of different energy networks. Energy hub is defined as a super node in electrical system receiving distinctive energy carriers such as gas and electricity in...

Most of the technical development of the 19th and 20th centuries relied on thermal engines to generate mechanical or electrical work from the combustion of fossil fuels [1]. This strategy of energy production is not renewable, in that finite resources are consumed and greenhouse gases are emitted, and it is also fundamentally inefficient as defined by Carnot. In a more modern strategy which cir...