New Zealand shares fell on Monday, with Contact Energy (ASX:CEN, NZE:CEN) slumping after launching its green capital bonds offer.

The S&P/NZX 50 Index declined 0.6%, or 74.3 points, to close at 12,404.17.

On the economic front, the country's trade deficit more than doubled to NZ$2.2 billion in August from NZ$1.02 billion in July, according to Stats NZ.

The New Zealand government rolled out the Low Emissions Heavy Vehicle Fund to offset the cost of purchasing low- and zero-emissions heavy vehicles, earmarking a one-time budget of NZ$27.8 million.

In corporate news, Contact Energy opened its offer of up to NZ$200 million in unsecured subordinated green capital bonds, with an indicative margin range of 2.15% to 2.30% per annum. The power company's shares were down almost 3% at market close.

Fletcher Building (ASX:FBU, NZE:FBU) rolled out its NZ$700 million capital raise through an institutional placement and an accelerated non-renounceable entitlement offer to bolster its balance sheet. The construction and infrastructure company will resume from its trading halt before market opening on Sept. 24.

Elsewhere, Summerset Group Holdings (NZE:SUM, ASX:SNZ) appointed Sarah Theodore as acting chief financial officer, effective Oct. 1. The company ended 1% lower.

Heartland Group Holdings (ASX:HGH, NZE:HGH) appointed current Chief Financial Officer Andrew Dixson as chief executive starting Oct. 1. Shares added about 1% at market close.