Renewable Energy Essay

Renewable Energy Essay-5
Installation experience appears to lead to higher output on subsequent projects, and exhibits spillovers across owners with proximate installation sites for wind farms.

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EROI is the ratio of the energy delivered by a process to the energy used directly and indirectly in that process, and is part of lifecycle analysis (LCA).

An EROI of about 7 is considered break-even economically for developed countries.

Using panel data on program characteristics, electricity prices, generation, and employment, we find that portfolio standards have been successful at increasing regional renewable generation, with marginal compliance coming almost entirely from wind energy.

However, costs to consumers are large, with retail electricity rates increasing by 9-15% five years after adoption.

A fuller account of EROI in electricity generation is in the information paper on Energy Return on Investment.

The (WEO2016) makes the points that VRE have five technical properties that make them distinct from more traditional forms of power generation.But attention swung away from renewable sources as the industrial revolution progressed on the basis of the concentrated energy locked up in fossil fuels.This was compounded by the increasing use of reticulated electricity based on fossil fuels and the importance of portable high-density energy sources for transport – the era of oil.First, their maximum output fluctuates according to the real-time availability of wind and sunlight.Second, such fluctuations can be predicted accurately only a few hours to days in advance.Another relevant metric is energy return on energy invested (EROI).This is not quoted for particular projects, but is the subject of more general studies.In the following text, the levelised cost of electricity (LCOE) is used to indicate the average cost per unit of electricity generated at the actual plant, allowing for the recovery of all costs over the lifetime of the plant.It includes capital, financing, operation and maintenance, fuel (if any), and decommissioning.As electricity demand escalated, with supply depending largely on fossil fuels plus some hydro power and then nuclear energy, concerns arose about carbon dioxide emissions contributing to possible global warming.Attention again turned to the huge sources of energy surging around us in nature – sun, wind, and seas in particular.


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