NDLI: Real BOS and system costs of off-grid PV installations in the US: 1987-2004

Content Provider	IEEE Xplore Digital Library
Author	Hegedus, S. Okubo, N.
Copyright Year	2005
Description	Author affiliation: Inst. of Energy Conversion, Delaware Univ., Denmark (Hegedus, S.)
Abstract	We obtained cost data on 47 off-grid and 11 grid-connected systems from Home Power magazine and Solar Energy International, ranging from 100 to 6600 W installed from 1987 to 2004. This allowed accurate analysis of installed costs ($/W, corrected to 2004$) without rebates or discounts for PV modules and balance of systems (BOS)- The BOS was separated into categories of batteries, power conditioning electronics (PCE), and "other". When normalized by system size, relative off-grid BOS costs are approximately independent of system size and comparable to PV module costs, especially for systems over 1000 W. Thus the off-grid system cost is approximately twice the module cost. Off-grid BOS and PV prices have been falling at about 0.5 $/W per year since 1990. System prices have therefore been falling at /spl sim/1 $/W per year. Grid connected systems have much lower BOS costs. Some off-grid systems with 2 axis trackers were not cost effective for maximizing the Dec-Jan output.
Sponsorship	IEEE Electron Devices Soc. (USA)
Starting Page	1651
Ending Page	1654
File Size	670441
Page Count	4
File Format	PDF
ISBN	0780387074
ISSN	01608371
DOI	10.1109/PVSC.2005.1488463
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-01-03
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Costs Batteries Solar energy Power conditioning Hardware Energy conversion Government Solar power generation Electric breakdown Data analysis
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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