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Inverter Price Highlights:    July 2008


Summary

This month, Solarbuzz entered 1,042 online inverter retail prices in to its inverter price database, down from last month's 1,050 price points.

The July result returns to the trend that has been evident for most of the last year. That trend is, of course, rising prices as global manufacturers taken on the challenge of rapidly rising demand.

Altogether this month, there were 33 price decreases and 45 price increases this month. In the previous month, there had been 41 price decreases compared to 37 increases. The ratio between increases to decreases was close enough to leave the US index value unchanged this month.

The All Inverter Index (see right) includes the full basket of Inverters on the worldwide survey represented in US dollars and European, Euros. Further segmentation of this data can be accessed through our consultancy services.

The Price Index (see right) is based on Prices per Continuous Watt - which is a measure of the output power of Inverters. The larger the Continuous Watt, the larger the power of the Inverter.


The same calculation methodology applies to this Index as the Solar Module index - i.e. it is based on the purchase price for a single Inverter.

The main difference in methodology between this Index and the Solar Module Index is that all global inverter prices are aggregated in to a single Index. Those aggregated products are then simply translated from the local currency in to either US dollars or European euros.

This month, the dollar was unchanged against the euro. As a result, euro index remained stable at 0.461 per continuous watt.

The mix of Inverter Retailers is still dominated by US Retailers. Around 90% of the prices are quoted in US dollars.

All Inverter Price Index
US $ per
Continuous
Watt
Euro per
Continuous
Watt
Jul
2008
0.721
0.454
Jun
2008
0.721
0.461
May
2008
0.721
0.461
Apr
2008
0.720
0.454
Mar
2008
0.720
0.475
Feb
2008
0.718
0.488
Jan
2008
0.716
0.487
Dec
2007
0.713
0.506
Nov
2007
0.713
0.492
Oct
2007
0.713
0.506
Sep
2007
0.712
0.520
Aug
2007
0.711
0.519
Jul
2007
0.709
0.518
Jun
2007
0.710
0.525
May
2007
0.709
0.525
Apr
2007
0.707
0.530
Mar
2007
0.704
0.535
Feb
2007
0.704
0.542
Jan
2007
0.704
0.535
Dec
2006
0.705
0.528
Number and direction of Inverter Price Changes


Where companies only quote list prices on the Internet, the mix of list and actual prices will be reflected in movements on the survey. However, discount structures will be applied when calculating the Solar Electricity Indices elsewhere on this site, in order to avoid overstating the cost of solar energy to newcomers to the industry.


Price Changes
Jul
2007
Aug
2007
Sep
2007
Oct
2007
Nov
2007
Dec
2007
Jan
2008
Feb
2008
Mar
2008
Apr
2008
May
2008
Jun
2008
Jul
2008
Number of Prices that Increased
14
75
95
22
24
15
45
45
26
28
27
37
45
Number of Prices that Decreased
33
53
47
5
21
18
8
12
4
8
15
41
33
Number of Prices Unchanged
1195
1164
1164
1296
1283
1301
1128
1132
1141
1132
1090
972
964

While the overall Price Index usually moves in the same direction as the relative movement of increases to decreases in the table above, the magnitude of the move can occasionally mean that the direction diverges - the size of the prices decreases relative to the increases was greater. Therefore, the Inverter price index shows a decrease even the ratio of price increases to decreases implies higher prices.

Size of Inverter Price Survey


The overall average is between three and four price points per product. The most listed product this month has 15 entries on the July 2008 survey. In other words, this particular product features on 15 of the 39 sites in the survey.

Survey Base
Jul
2007
Aug
2007
Sep
2007
Oct
2007
Nov
2007
Dec
2007
Jan
2008
Feb
2008
Mar
2008
Apr
2008
May
2008
Jun
2008
Jul
2008
Number of Companies in Survey
44
42
42
41
42
42
40
40
40
40
41
39
39
Number of Prices Tracked
1436
1323
1306
1323
1328
1334
1181
1189
1171
1168
1132
1050
1042
Number of Product Models
319
286
280
285
282
284
250
251
242
246
237
221
222


Most product listings are from companies marketing out of the United States. These companies market solar products globally. There is less public display of prices in the key Japanese markets, but growing representation from European countries. The survey does include companies from USA, Germany, United Kingdom, South Africa, Australia, Brazil, Bulgara, Switzerland and Canada. Exchange rate conversions are made on the date of the survey.

In order to retain consistency in the data, the prices are based on the purchase of one Inverter and are the lowest price displayed on the Internet site (sometimes, this price is described as a 'sale price'). Most sales companies offer discounts on multiple unit purchases and some companies offer to match the lowest price of competitors.

Major Inverter Brands*


Major Product Brands/Manufacturers covered in the survey are listed below. Click on the underlined names to go to the Company web sites or click here to go to names and addresses and contact details.

Advanced Energy
Systems
Fronius Outback SMA Regelsysteme Studer
Advanced Electronic
Supply (AES)
Go Power! Electric Inc. PowerPro
(Tumbler Technologies)
Solarix Xantrex Technology Inc
Beacon Power Heart Interface PowerSine Solsum
Cherokee Electronics Omnion PV Powered Soltek
Exeltech   Sharp Electronics Statpower a

* some manufacturers market under multiple brand names

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