About urbane wind turbine investment
Friday, January 27th, 2012
The urban wind turbine investment
These costs consist of: UWT complete installation including engineering, safety measures, supervision, support construction, transportation and installation, proof of (drive), and acceptance. Probably the additional costs resulting from the
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of feasibility studies, site selection, structural assessment (if the installation of turbines on the building), licensing and project management. To at least partially comparable investment costs of different turbines, the cost per installed kW was calculated. The figure provided is the result:. (Total investment – the residual value after 10 years) / nominal capacity
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The residual value is estimated as 20% of investment for all but the turbine Ropatec. This is because the manufacturer Ropatec warrants to buy its turbines after ten years for a fixed price. However, it should be noted that all costs are estimates at the time of publication and may change.
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Also, all calculations are only indicative, as a separate charge can not estimate the costs and performance of suppliers and manufacturers have not been confirmed in practice. Therefore, although these figures provide a rough guide to the costs of further investigations on individual project basis is necessary.
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4.1.2 Periodic costs
periodic costs include maintenance, part replacement, costs of transportation in connection with work on site, the possible costs of insurance (including third party liability), the cost of any equipment replacement and cost complete system check after 10 years . Again, these expenses are estimated based on data from suppliers and manufacturers, and should be treated as indicative costs only.
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4.2 Advantages
4.2.1 Financial incentives
of the financial incentives available to distinguish between the Netherlands and Great Britain.
Netherlands: E.I.A. – The energy investment deduction for profit organizations: it is possible to obtain an EIA with a maximum € 5,000 per turbine for the turbine with a rated power
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M.E.P. – Power Generation Environmental Quality: Refers to the total energy generated by renewable energy installations. Level M.E.P. subsidy per kWh is set by the government and exposed the scheme support the ministerial regulations.
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Great Britain. Support can be obtained from the Low Carbon Building Programme (LCBP) in the UK, to cover up to 50% of installation costs
Some provinces and municipalities provide additional subsidies as part of its renewable energy development programs. Most often these
grants are part of local action against climate change and are usually reviewed annually.
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4.2.2 savings through the use of electricity generated
The use of electricity on-site resources to direct savings for the owner through lower power consumption ra?un.Uštede depend on the price
pays for the supply of energy by consumers for electricity supplied from the network. For example, customers ENEC suppliers in the Netherlands pay about 21 € cents / kWh. In the UK, the typical price of electricity for homes and households can range from 11P to 16p/kWh. These prices depend greatly on the weather during the day (or night) when using electricity.
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online sales
If there is excess electricity generated from small wind turbines, in theory it can be sold and the owner decides to whom. The most common would be sold to the
The utility energijom.Cijena may differ significantly from an electricity company to another, so it is worth exploring a few options. For example, in the Netherlands, ENEC paid € 4.088 cents / kWh without VAT (2007 ).
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green power option provides a discount on electricity supplied to its customers who feed their excess energy into the network. Sales of electricity to the grid is regulated differently in each country. If UWT owner wants to sell its electricity to the grid, (a), on May have to have some kind of meter that measures in both directions: electricity sales to the grid and the electricity consumed from the grid. This type of meter is readily available but not installed as standard and so may need to be installed as part of the installation of wind turbines.
4.3 Efficiency UWTs
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the efficiency of wind turbines is usually measured in terms of cost, or cost per kWh of electricity produced. In technical terms in order to determine income potential, the efficiency would be measured as the yield, measured as the number of kilowatt-hours produced per square meter of rotor area per year (kWh/m2/yr ).
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At the moment there is not enough data to yield UWTs of real projects to draw definitive conclusions about effectiveness. This means that performance can only be
is estimated, and that comparisons between different types of UWTs can not be done reliably.
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However, an indicative comparison in Table 4
and 5 by using the “reference yield” of the manufacturers is calculated at two specific wind speed as follows:
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about 12 m / s: a character in the vicinity of the nominal wind speed of most UWTs
of 5.5 m / s:. A good average wind speed for the work explores UWTs
Explanation:
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= rotor area
sion to the daily, Phnom hr gave the vendors (see Table 2). Pref is the result of the formula: Pref = (VREF / sion to the daily) 3 x Phnom
compared with large turbines
initial (capital) investments per kW can vary greatly between different UWTs: According to the information suppliers and manufacturers can be between 2 400 and € 9,100 / kW. For comparison, the initial investment for large turbines are about 1000 € / kW for land installations and about 2000 € / kW for off-shore (investment in solar photovoltaic (PV) systems have been around € 6,200 / kWp installed ).
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is expected to yield, assuming that the average wind speed of 5.5 m / s, it would be around 150-400 kWh/m2/year.Prinos of large turbines
varies between 800 and 1200 kWh/m2/year.
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figures show that the large turbines clearly outperform UWTs and it is not surprising, because the conditions under which they are implemented are very different.
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, however, UWTs are still under development, although it is unlikely you will ever get to the yield of large wind turbines (wind resources are not the same in urban areas), can be expected that costs will fall and UWTs efficiency will be significantly improved. Manufacturers UWTs the
the Netherlands and the UK expected to reduce prices by about 40% to disorderly-up production of at least 500 turbines a year.
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Finally, UWTs produce electricity that can be directly consumed at the production site. This means that the electricity produced is used efficiently
of consumer prices, which is about 5 times higher than the price paid for electricity generated by large turbines.
With regard to the capacity of the installation cost and expected return, it is better to compare UWTs with PV electricity production.
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