Frequently Asked Questions
General
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Going solar helps you reduce your power bills, shield against rising electricity costs, and lower your carbon footprint. Solar also increases property value and gives you more independence from the grid. In the Southern Lakes, solar is a smart, sustainable investment for families, lifestyle properties, and businesses.
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We design and install:
Grid-tied solar systems that connect to the power grid.
Hybrid systems with batteries for night-time use and backup power.
Full off-grid solar for rural and remote properties.
Every system is custom designed for your home or business in the Wanaka–Hawea region, ensuring maximum efficiency, durability, and long-term reliability.
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The cost of solar varies based on system size, battery storage, and add-ons like EV charging. At Alpine Solar, we tailor every system to your property. Our Sigenergy hybrid systems are modular, so you can start small and expand later. We offer free on-site consultations in Wanaka, Hawea, Cromwell, Luggate, and Queensberry so you’ll know exactly what your solar investment will deliver.
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Yes. Modern solar panels still generate electricity during cloudy weather and shorter winter days. While output is lower than in summer, a well-sized solar system in Wanaka or Cromwell will balance seasonal variation and meet your energy needs across the year.
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High-quality solar panels are warrantied for 25 years and often last much longer. Inverters usually need replacing after 10–15 years, while batteries last about a decade depending on use. By choosing premium equipment, your solar system can keep delivering savings for decades.
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Standard grid-connected solar systems automatically shut off during an outage to protect line workers. To keep your home powered in a blackout, you’ll need a solar battery or hybrid system. With a Sigenergy battery, you can keep essentials running — from lighting to fridges — and enjoy greater energy independence.
How it Works
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When your panels generate more power than you use, the extra electricity is exported to the grid. Your energy retailer gives you credits for this power, which lowers your bill. This grid-connected solar setup is the most common option for Kiwi households.
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Most solar installations in New Zealand don’t require building consent. All electrical work must be certified by a qualified electrician. Hawea Solar handles every compliance step, so your system is installed safely and legally.
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Yes. Our solar systems are designed with future expansion in mind. If your energy use grows, you can add extra panels, upgrade your inverter, or include a battery. This makes solar a flexible, future-proof solution.
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Absolutely. Our Sigenergy systems come with easy-to-use monitoring apps so you can track solar generation and household usage in real time. This helps you optimise energy use and maximise savings. We also offer fixed in-home display options.
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Solar is low maintenance. We recommend a simple panel clean once or twice a year, plus a routine electrical check every few years. This keeps your panels performing at their best and your system safe.
Batteries
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While it’s possible to run a grid-tied solar system without one, adding a battery unlocks the full potential of solar. A battery lets you store excess energy for use at night, during peak power prices, or in a power cut, giving you true energy independence. For most households, pairing panels with a battery delivers the best savings, resilience, and long-term value.
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We install next-generation lithium batteries from Sigenergy. Unlike other brands that lock you into a single size, Sigenergy batteries are modular and expandable, so you can start small and add more storage as your needs change. They’re safe, reliable, and built for long-term performance, giving you flexibility and true energy independence.
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Yes - safety is a top priority. The Sigenergy SigenStor uses advanced lithium ion cell design along with multi-layer protection systems. Built-in safeguards monitor temperature, voltage, and current to prevent overheat or overload. In case of unusual conditions, protective circuits isolate the battery to prevent damage. The system also meets relevant safety and certification standards, giving you peace of mind that your battery is engineered to be both reliable and safe.
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Your solar battery is usually installed indoors in a garage, utility room, or dedicated plant area, or outdoors on a suitable wall if sheltered from direct sun and extreme weather. The modular Sigenergy units are compact and wall-mounted, so they don’t take up much space. During your site consultation, Alpine Solar will recommend the best location for safety, accessibility, and performance, ensuring the battery is easy to maintain and well protected.
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Yes. If you already have solar panels, a Sigenergy battery can be added later to upgrade your system. Thanks to their modular design, these batteries integrate easily with existing setups, giving you the freedom to start with solar only and add storage when you’re ready. This flexibility makes them a better long-term choice than brands that require replacing your whole system to add a battery.
Installation
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Most systems are installed in 1–3 days once designed. Alpine Solar takes care of everything, from panel mounting to inverter wiring and grid connection. We aim for a fast, tidy installation with minimal disruption.
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Yes. Solar panels can be mounted on most roofs, including iron, tile, and Colorsteel. During your site consultation, we check pitch, orientation, and shading to ensure your system delivers maximum performance. If your roof isn’t suitable, we can design ground-mounted solar systems.
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Our panels come with 20–25 year performance warranties. Inverters and batteries also include robust manufacturer warranties. By working only with trusted brands like Sigenergy and Suntech, we ensure your system is built to last.
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If issues arise, Alpine Solar provides local support, warranty assistance, and repair services. You’ll always have a trusted, qualified installer close by to keep your system performing.
SigenStor 5-in-1
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SigenStor is an all-in-one energy solution that combines a solar inverter, battery, EV DC charger, power conversion system, and smart energy management into a single unit. It’s designed to simplify your solar setup while giving you maximum efficiency, savings, and flexibility.
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SigenStor’s modular design lets you start with what you need today and easily expand later, adding more battery capacity, solar, or smart features as your energy needs grow. Unlike traditional setups that require separate components, SigenStor integrates everything into one compact system, making installation simpler, cleaner, and far more efficient. It’s a smart, future-proof way to manage your home’s energy.
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Yes. Batteries are available in 6, 8, and 10 kWh modules that can be stacked to increase capacity as your needs grow. This scalability makes it a future-proof choice for households that want flexibility.
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Yes. When paired with the optional Sigen Gateway, the system switches to backup power in as little as 10 milliseconds, keeping your lights and appliances running without interruption. It can also be configured for full off-grid operation if you want complete independence.
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Absolutely. With the integrated EV DC charging module, you can charge your EV directly from solar and battery power. This means faster, greener charging and the option to use stored energy for your car, even at night.
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SigenStor comes with the Sigenergy app for real-time monitoring from your phone. You can also choose the Shelly Wall Display for at-a-glance insights in your home, giving you full control and visibility over your solar production, battery storage, and usage.
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SigenStor is designed to work with most NZ homes and can be tailored to your energy use, roof size, and lifestyle. Whether you want lower power bills, EV charging, or off-grid independence, SigenStor can be configured to suit.
Solar Panels
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Suntech panels are built for decades of reliable performance. With up to 15 years product warranty and 25–30 years performance warranty, they’re guaranteed to keep generating for 25+ years, often still producing 85–88% of their original output after decades of use.
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Yes. Suntech panels are designed to perform well in all climates, including New Zealand’s cold winters and variable conditions. While output is lower on cloudy days, a well-sized system ensures consistent year-round savings.
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Suntech panels are tough and low-maintenance, built to withstand rain, wind, and hail. Usually rainfall is enough to keep them clean, but an occasional wash helps remove dust or bird droppings for maximum efficiency.
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Yes. Suntech panels work with most NZ roof types including corrugated iron, Colorsteel, and tile. We design your system around roof pitch, angle, and shading to make sure the panels deliver at their best.
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Yes. While most systems are roof-mounted, solar panels can also be installed on ground mounts, garages, sheds, or carports if your roof isn’t suitable. In some cases, a ground-mounted system can even produce more power because it can be angled perfectly toward the sun. Our team can assess your property and recommend the best placement for maximum efficiency, safety, and visual appeal.
EV Charging
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The Sigen DC charger delivers high-power, fast charging directly from your solar and battery system. This means shorter charging times compared to standard home AC chargers, ideal for busy households that need quick top-ups.
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Yes. With bi-directional charging (V2X), your EV battery can supply power to your home during outages, feed energy back to the grid, or even run appliances directly. This transforms your car into an extra energy storage system.
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The DC charger is designed to work seamlessly with the SigenStor 5-in-1 system. Together, they create the most efficient setup for powering both your home and your EV with solar.
Hawea Solar also offer a Sigenergy AC charger that can run directly from your solar panels.
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