Although the extensive introduction of VRs (variable renewables) will play an essential role to resolve energy and environmental issues in Japan after the Fukushima nuclear accident, its large-scale integration would pose a technical challenge in the grid management; as one of technical...

Will private households owning a photovoltaic system share their electricity during a long-lasting power outage? Prior research has shown that our energy systems need to become more resilient by using dispersed energy sources-a role that could well be performed by these private photovoltaic...

The growth in energy demand and global concern about the environment has resulted in the drive towards alternative energy sources and consequently this research concerning solar energy harvesting of radiation received at the earth's surface. Analysis of solar radiation data is an important tool...

In the last few years the solar-assisted air-conditioning systems have been in intensive development and are considered as the viable application for the thermal solar systems more often, especially in regions of southern Europe. This is driven by the increasing higher electrical consumption in...

For dissemination and promotion of photovoltaic power generation systems, it is important to reduce power generation cost because the cost is very expensive compared with conventional power generation methods. The cost of building materials integrated PV modules can be at least partially...

The paper summarizes Japanese activities in the field of photovoltaic system R&D. Last year 1994 was just the 20th anniversary of the Sunshine Project, which started in July 1974. Although there have been a variety of R&D including stand-alone applications in the Project, the utility-connected,...

The principle of energy production evaluation of PV systems is explained and parameter definitions are given at first. Then, a new method is proposed to verify detailed system parameters from ordinary, monitored data. Data acquisition system is used for the evaluation of long-term energy...

The energy deficit budget of Pakistan demands for an energy transition from limited fossil fuel reserves to abundant renewable energy sources. With a modest research and development programme for solar energy utilisation, PCSIR and DGNRER concentrated on both solar thermal and PV systems. The...

Water is in short supply with countries vying for access to river heads. Hong Kong (HK) is no different. It relies on supply from Mainland China with other cities rivalling access. Yet there is still no great impetus for water conservation. This paper reports on progress in setting up a pilot...