Energy engineered forward · Auckland, Aotearoa

Solar, engineered for your home.land.business.future.

Bridging real estate and renewable energy. From utility-scale solar farms to residential rooftops, built to last.

(01) — Who we areReal estate × renewable energy

Watthaus Strategy bridges real estate and renewable energy. We partner with landowners, investors, developers and homeowners to unlock high-potential land and rooftops from feasibility to switch-on.

CEC-certified installsAuckland-based teamLand to switch-on

Meet the team

(02) — Two ways inSolar · Consultancy

One team, every scale.

Whether you want lower power bills at home or you're sitting on land with grid potential, you deal with the same engineers from first call to final handover.

Aerial view of a family home with a large rooftop solar array

01 — Watthaus SolarResidential

Home solar.

Tier 1 JA Solar panels, Sigenergy inverters and SigenStor batteries, installed by our Auckland-based team with a 10-year workmanship warranty.

02 — Watthaus Consultancy

Utility-scale.

Land acquisition, engineering, procurement and construction for commercial and utility-scale solar farms.

Energy generatedAll systems

0GWh

Clean energy produced by Watthaus systems so far.

Carbon avoidedCO₂

0tonnes

CO₂ emissions saved across every installation we've completed.

Average return

0% p.a.

Average ROI. See what the sun could save you.

Partner words

Our partnership with Watthaus Strategy makes perfect sense. By combining their renewable energy expertise with our focus on supporting landlords, developers and homeowners, we can turn unused roof space into real opportunities.

The WORX Real EstateThe partnership

Peace of mindEvery package

10years

Workmanship warranty, plus commissioning and performance monitoring as standard.

(03) — Strategy · our servicesScroll →

Every stage, one partner.

From identifying the right land to commissioning the final installation, we manage every stage.

Identify. Secure. De-risk.01

Land acquisition

Stage 01

We source, assess and secure viable solar farm land, with strong, data-driven, market-aligned opportunities.

Engineers in hi-vis reviewing a solar array

Design. Optimise. De-risk.02

Engineering

Stage 02

Early-stage engineering, layouts and yield studies for informed solar investment decisions, through to grid connection.

Container ship carrying equipment at sea

Source. Secure. Deliver.03

Procurement

Stage 03

As Master EPC coordinator: Tier 1 equipment, cost certainty and reliable delivery timelines.

Installers lifting a solar panel into place

Execute. Commission. Energise.04

Construction

Stage 04

Safe, efficient construction management for commercial and utility-scale solar, through to energisation.

Have land or
a project?Start a land enquiry

(04) — Choose your packageFully installed · CEC-certified

Solar packages, sized for Kiwi homes.

Every package includes commissioning, performance monitoring and a 10-year workmanship warranty.

Aerial view of a home with rooftop solar

Grid-tie8.16 kWp

Bright Start

Package 01

16JA Solar panels

510WPer panel, Tier 1

5kWSigenergy controller

Sigenergy Controller & Gateway
Great for smaller households and daytime use

Get this plan Full details

Large rooftop solar array on a family home

Most generation15.3 kWp

Bright Boost

Package 02

30JA Solar panels

510WPer panel, Tier 1

10kWSigenergy controller

Sigenergy Controller & Gateway
Built for larger homes, heat pumps and EVs

Get this plan Full details

SigenStor battery installed on the side of a home

Hybrid + battery6 kWh

Sunny Reserve

Package 03

16JA Solar panels

5kWSigenergy controller

6kWhSigenStor battery

Store daytime sun for the evening peak
Backup-ready, with time-of-use optimisation

Get this plan Full details

Most independence10 kWh

Sunny Reserve Plus

Package 04

30JA Solar panels

10kWSigenergy controller

10kWhSigenStor battery

Maximum self-consumption, day and night
Grid-outage resilience for the whole family

Get this plan Full details

CEC-certified install Commissioning included Performance monitoring 10-year workmanship warranty Finance from 0%

(05) — Live performanceRunning on Auckland time

See your sunshine work.

Watch your panels turn sunlight into savings. Every system comes with real-time monitoring of what you generate, what you save and the carbon you offset.

Auckland · —Sample 10.12 kW + 20 kWh system

0.0kWGenerating now

0.0kWhToday so far

$0.00Saved today

— · Expected today: — kWh. Modelled from Auckland daylight for a system like our Auckland Residence install.

In the Sigen appReal time

Everything, at a glance.

Live generation and consumption
Battery state and backup reserve
Savings and carbon offset
Annual performance reviews with our team

(06) — How it worksAssess · Design · Install · Monitor

Four steps, no shortcuts.

Our process is straightforward. We don't cut corners, and we never upsell hardware you don't need.

Step 01 / 04Roof · switchboard · usage

Site assessment.

We look at your roof, switchboard and power usage, in person or from aerial imagery first, so the system fits your home and not a template.

Scaffolding staged around a multi-level Auckland home

Step 02 / 04Fixed quote

Tailored design.

Every system is modelled for your roof planes, orientation and usage, with clear pricing, honest timelines and realistic ROI before you sign anything.

Hard hat, plans and tools laid out for system design

Step 03 / 04CEC-certified

Professional installation.

A site-specific safety plan, flashed and sealed roof penetrations, careful cable runs and a home that stays fully liveable throughout.

Step 04 / 04Sigen app

Long-term monitoring.

Live data from commissioning day, and annual performance reviews built into the relationship. We stay with you for the life of the system.

SigenStor battery and energy controller installed outside a home

(07) — Featured projectAll projects

Residential solar, done right.

A commercial-grade mindset on a family home: bankable hardware, purpose-engineered access and a battery-first design.

Top-down drone view of the Auckland Residence with solar across two roof planes

Case study · Auckland ResidenceMulti-level · Hybrid

22 × 510W JA Solar · Sigen EC 10.0 SP · 2 × SigenStor

The Auckland Residence.

Read the case study

System size10.12 kW

Battery storage20 kWh

Annual production13,765 kWh

Diverted from landfill99 %

(08) — PartnershipWatthaus × The WORX Real Estate

The Watthaus and The WORX Real Estate teams at the partnership launch

New partnership

Powering real estate with renewable energy.

We're delighted to announce a new partnership between Watthaus Strategy Ltd and The WORX Real Estate. By combining WORX's proven expertise in property sales, management and investment with our specialisation in solar and energy strategy, homeowners and landowners can future-proof their assets, strengthen long-term returns and contribute to New Zealand's transition to clean energy.

Together, Watthaus and WORX will identify viable rooftops and properties for solar integration, helping clients enhance property value while reducing their carbon footprint.

Unlock new income from underused roof and land space
Increase long-term property value through solar
Support New Zealand's clean energy transition
Create sustainable investments for future generations

We're excited to work alongside Tim and his dedicated team at The WORX Real Estate to pioneer the next chapter of sustainable property development in New Zealand.

Our trusted partners & suppliersTier 1 hardware

Auckland Business
Chamber