Difference between revisions of "Metering and Billing Systems"
From energypedia
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= Standard kWh meter = | = Standard kWh meter = | ||
| − | [[Image:Standard kWh meter.jpg|thumb|Standard kWh meter. Its price is about 40-50 USD]] [[Image:Digital meter.jpg|thumb|Digital meter. Its price is about 120-150 USD]] | + | [[Image:Standard kWh meter.jpg|thumb|Standard kWh meter. Its price is about 40-50 USD]] <u>Advantages</u>[[Image:Digital meter.jpg|thumb|right|Digital |
| + | meter. Its price is about 120-150 USD]] | ||
| − | < | + | *technique is "state of the art"<br> |
| − | + | *billing is fair and transparent | |
| − | *fair and transparent | + | *reading can be uncoupled from tariff collection |
| − | *reading | + | *allows amount and time related tariffs (demand steering) |
| − | *amount and time related tariffs | ||
<u>Disadvantages</u> | <u>Disadvantages</u> | ||
| − | *high costs (metering device | + | *high costs (metering device) |
| − | *dis- and re-connection in case of late payment | + | *especially at rural areas in dev. countries the investment cost for a meter unit are way out of range<br> |
| − | + | *dis- and re-connection in case of late payment<br> | |
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= Pre-paid system with coins or cards = | = Pre-paid system with coins or cards = | ||
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*costs for re-collection of coins and selling system for coins/cards | *costs for re-collection of coins and selling system for coins/cards | ||
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= Current limiter = | = Current limiter = | ||
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*time of usage not considered; less fair | *time of usage not considered; less fair | ||
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= Flat rate = | = Flat rate = | ||
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*less fair | *less fair | ||
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= Experience form Nepal : [http://www.endev.info/wiki/index.php/Nepal#Innovative_metering_.2F_load_management Innovative Metering] = | = Experience form Nepal : [http://www.endev.info/wiki/index.php/Nepal#Innovative_metering_.2F_load_management Innovative Metering] = | ||
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[[Solar Main Page|⇒ Back to Solar Section]] | [[Solar Main Page|⇒ Back to Solar Section]] | ||
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[[Category:Hydro]] | [[Category:Hydro]] | ||
[[Category:Solar]] | [[Category:Solar]] | ||
| + | [[Category:metering]] | ||
Revision as of 10:37, 2 June 2010
Standard kWh meter
Advantages
- technique is "state of the art"
- billing is fair and transparent
- reading can be uncoupled from tariff collection
- allows amount and time related tariffs (demand steering)
Disadvantages
- high costs (metering device)
- especially at rural areas in dev. countries the investment cost for a meter unit are way out of range
- dis- and re-connection in case of late payment
Pre-paid system with coins or cards
Advantages
- fair and transparent
- no meter reading
- no overdue costs
- no costs for dis- and re-connection
- close to “ability to pay”-variations
- coins less expensive than cards
Disadvantages
- relatively high cost for metering device
- less forgery proof
- costs for re-collection of coins and selling system for coins/cards
Current limiter
Advantages
- simultaneously protecting against overcurrent (actual purpose)
- delimiting peak demand
- no meter reading required; flat rates according to max. amperage
Disadvantages
- danger of fraud and theft of switch fuses
- additional costs for replacement of cut out fuses
- time of usage not considered; less fair
Flat rate
Advantages
- very cheap (no metering or delimiting device)
- especially in rural areas of Indonesia quite common and accepted
- can be combined with number of appliances or installed wattage (social control)
Disadvantages
- provokes waste of electricity, no incentive for saving
- no load control / demand steering possible (peaks)
- less fair
Experience form Nepal : Innovative Metering
⇒ Back to Solar Section ⇒ Back to Hydro Section
