NEW YORK (

TheStreet

) -- With a few more solar-sector earnings releases on tap this week -- and on a day that's leaving most of the market battered -- solar stocks were plunging Monday.

The leading decliner was

Ascent Solar Technologies

(ASTI)

, whose shares had fallen 18%, or $1.23, to $5.60, in midday trading Monday.

Companies set to report quarterly results Monday and Tuesday include China-based

Trina Solar

(TSL)

and

Solarfun Power

( SOLF). Shares of Trina, which reports later today, fell 7.1%, or $2, to $26.31. Solarfun, which reports Tuesday morning, lost 6%, or 40 cents, to $6.30.

Yingli Green Energy

(YGE)

, which had dropped 3.9% in the afternoon, is scheduled to report on Wednesday.

Suntech Power

(STP)

, which shows off its second-quarter results on Thursday, was down 6.1%.

Last week,

JA Solar

(JASO)

,

LDK Solar

(LDK)

and

ReneSola

(SOL) - Get Report

each posted losses for their respective second quarters. Monday afternoon, American Depositary Shares of JA Solar and ReneSola lost 7.4% and 5.8% each, while shares for LDK Solar gave up 3.3%.

-- Reported by Sung Moss in New York

Copyright 2009 TheStreet.com Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.