Slim Water Tank & Rainwater Harvesting System


Available in 1,000 litres, and soon to come 2,000 litres, stormPANEL is a slim water tank and discreet rainwater harvesting system.

These slim water tanks are designed to be unseen, and the ease of handling was part of the design process from the start. View our brochure to learn more about stormPANEL.

1,000L stormPANEL
1,950mm high x 1,520mm long x 460mm deep

1,950mm high x 3,1300mm long x 460mm deep


Benefits & Features

  • Quick and easy installation – just a simple connection to an existing downpipe
  • Extra 25mm outlets for orifice overflow points or garden taps available to add on
  • 2x 50mm brass BSP outlet – one at each end of the tank
  • Tank grade plastic enables for potable water or stormwater – ideal for rainwater harvesting systems
  • A 300mm lid is fitted for ease of inspection and cleaning
  • Designed with moulded in lifting lugs for certified shackles
  • 10-year warranty applies to all stormPANEL tanks

Colour Options

Please note colours may not be 100% accurate to the actual tank colour due to digital variations. 

Birch Grey
Light Grey
Slate Grey
Clay Brown
Olive Green
Dark Green (Forest)
Mist Green
Mountain Blue
Translucent (non-potable)

Why Choose stormPANEL

Easy Install

One of the easiest water tanks to install – simple connection to an existing downpipe. 

Connect Together

The 1,000L and 2,000L models have been designed to connect together to increase volume.

Ultra Slim Water Tanks
These slim water tanks are designed to take up as little space as possible, stormPANEL is only 460mm deep.
Save Water

A single stormPANEL holds 1,000L of water! Equivalent to four-days water supply for the average household. You can have as many tanks as your property can accommodate, and your roof can fill.

Tank Grade Plastic

A quality product internationally recognised as the most appropriate grade for New Zealand’s harsh conditions.

Proudly NZ Made, 10 Year Warranty

stormPANEL is made by Kiwi’s for Kiwi’s. It is designed and manufactured in Penrose, with manufacturing facilities in the Lower North and South Islands.


Designed To Be Sustainable

stormPANEL tanks are manufactured from the highest quality polyethylene available which is ideally suited to our moulding technique giving long life and trouble-free service.

stormPANEL FAQ's

stormPANEL tanks are available in a range of colours. Standard sizes available are 1,000L to a soon to be available 2,000L. Larger volumes are achieved by coupling multiple tanks together onsite with ease.

As a retrofit installation for garden watering, the stormPANEL system is within the ability of a home handy person but for new builds or connections to plumbing, or consented work – any qualified plumber or drain layer can install. This includes Stormwater Systems.

stormPANEL stormwater tanks come with a 10-year domestic warranty.

They sure are! stormPANEL is designed to exceed AS/NZS4766:2020 and the material is certified to AS/NZS4766:2006, AS/NZS4020:2005, and AS/NZS 2070.

The highest quality polyethylene available. Polyethylene cannot rot or corrode and is ultraviolet stabilised. The manufacturing process produces zero waste and the product is 100% recyclable; it’s also ideally suited to our moulding technique, giving long life and trouble-free service.​

The tanks have been designed for installation on an above ground flat surface. It is suggested to install on a concrete base min 100 mm thick, with nominal ductile mesh reinforcement if subsoils are in accordance with NZS3604 classification for “good ground”.

Alternative options such as paving slabs laid on a firm compacted sand & gravel base are acceptable if subsoils are in accordance with NZS3604 classification for “good ground”.

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