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Whether you're a homeowner curious about rooftop solar or a developer with land, we'll give you straight answers and a clear plan.
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Frequently asked.
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01What services does Watthaus Strategy offer?
Two main streams: residential rooftop solar installations for homeowners, and utility-scale solar consulting for developers, landowners and investors. Our consulting covers land acquisition, engineering, procurement and full construction management across New Zealand.
02How do I get started with a residential solar quote?
Use the solar planner, fill in the form above or call us directly. We'll arrange a brief call about your household usage and roof, then provide a detailed proposal, including system size, expected savings and ROI, within a few days, at no cost or obligation.
03What solar products do you use for residential installations?
JA Solar Tier 1 panels (510W) and Sigenergy inverters for all residential installations, with SigenStor batteries for hybrid systems. All products carry manufacturer warranties of 10–25 years, and we provide an additional 10-year workmanship guarantee.
04How do you source land for solar projects?
We draw on our network of landowners, real estate partners (including The WORX) and regional councils. Every site gets a full feasibility assessment covering grid proximity, topography, solar irradiance and consent pathways before we recommend it.
05What legal and regulatory work is involved in utility-scale solar?
We manage the full regulatory pathway: resource consents, grid connection applications and building consents where required. We work closely with local councils, lines companies and Transpower to ensure every project is compliant from day one.