FAQ’s

Typical residential systems range from $8,000 to $18,000 depending on system size, components, and complexity. Adding a battery can increase the cost by $7,000 to $15,000.
→ WeShare suggests asking your supplier for a full breakdown of system costs, including panels, inverter, and installation.

Yes, most homeowners see savings over time through reduced power bills and export credits. The actual savings depend on system size, usage habits, and buy-back rates. Additional benefits include increased home value, potential eligibility for green finance, and enhanced energy independence.
→ WeShare recommends requesting a personalised savings and payback estimate from your provider based on your current power usage.

Yes, most electricity retailers offer a buy-back rate for exported energy. Rates vary widely, so it’s worth shopping around. WeShare is actively working with partners to maximise the value of locally generated power, including export pathways.
→ WeShare suggests comparing retailer buy-back rates and asking your provider how excess energy is handled under your system.

You can install solar without a battery, but storage helps increase self-use and resilience. Batteries allow use of solar power at night or during outages.
→ WeShare recommends that if you install solar without a battery, you ensure the system is battery-ready for easy future integration.

This depends on your electricity use, roof space, and orientation. A typical home may require 10–20 panels (3–6 kW).
→ WeShare suggests sharing your last 12 months of power bills with your installer to receive a tailored system design. If you have or plan to add an electric vehicle, consider sizing your system to help power it—reducing transport costs and increasing solar self-use.

Most homes use batteries from 5–10 kWh. The right size depends on your night-time consumption and desired backup capacity.
→ WeShare recommends asking your installer to simulate a few battery sizes based on your usage and backup goals.

Panels last 25+ years. Batteries typically last 10–15 years depending on usage and chemistry.
→ WeShare suggests confirming warranty periods for both components and workmanship when comparing quotes. WeShare also recommends discussing with your supplier how to optimise battery settings to extend battery life.

Grid-tied solar systems shut down for safety unless paired with a battery and backup inverter setup.
→ WeShare recommends asking about emergency power supply options for critical household circuits.

North-facing roofs at 15–35° pitch are ideal. Homes with both East and west-facing also work well. Shading and roof condition must be assessed.
→ WeShare suggests requesting a site and shading analysis to confirm if your roof is suitable.

Shading can significantly reduce output. Even partial shade on one panel can affect the whole string unless optimizers are used.
→ WeShare recommends asking your supplier which is the best option to manage shading issues on your site.

At present, New Zealand does not offer direct national rebates for solar, and this has been confirmed through official government energy websites. However, some regional councils or utility providers may offer support.
→ WeShare suggests checking with your local council or provider, and considering low-interest green finance options. You can also check out the WeShare FAQs: Solar Finance Options for more details.

A VPP aggregates many distributed energy systems (like solar and battery setups) to act as a coordinated network, enhancing stability and value.
→ WeShare recommends asking about the WeShare–Ecotricity Virtual Power Plant pilot currently underway on Waiheke Island.

Yes, but shared roof access, metering arrangements, and landlord cooperation are key.
→ WeShare suggests renters and landlords explore shared solar models or battery subscriptions where full installs aren’t possible.

NZ does not use traditional net metering. Instead, excess energy is sold back at a set buy-back rate.
→ WeShare recommends asking your power retailer about their solar export pricing structure and terms. The WeShare–Ecotricity pilot also explores how community energy generation and export can be optimised for local benefit.

Going off-grid requires a large battery bank and backup generation. It may be ideal for remote properties but is costly and complex.
→ WeShare suggests discussing hybrid or grid-connected models before deciding to go fully off-grid.

Most residential systems take 1–3 days to install once all approvals and equipment are in place.
→ WeShare recommends asking your supplier for a timeline including design, permitting, and installation.

Solar can be installed year-round. Spring and summer offer quicker returns due to longer daylight hours.
→ WeShare suggests planning ahead to align installation with peak generation seasons.

Yes, in most cases a new import/export (smart) meter is needed to record usage and solar export.
→ WeShare suggests ensuring your supplier or installer manages the application, approval, and installation timing of the DG meter installation as part of the overall supply and install process.

Panels typically carry 25-year performance warranties; inverters and batteries usually 5–15 years.
→ WeShare suggests confirming both product and installer workmanship warranties before signing a contract.

They require little maintenance. Cleaning panels, checking for shading, and monitoring system output are typical.
→ WeShare suggests ensuring your handover pack or owner’s manual includes recommended maintenance procedures, service times and practices.

The system design includes a hybrid grid-tied inverter with EPS (Emergency Power Supply) functionality, rated at 5 kilowatts or larger. It must be paired with a battery system providing at least 5.2 kilowatt-hours of usable storage capacity.

Two hybrid inverter and battery systems have been approved for use in the pilot by WeShare and key partner Ecotricity: FoxESS and SIGENERGY. These systems are currently undergoing VPP integration testing and have been selected for their quality, performance, and compatibility with future energy-sharing functionality.

The approved systems are being equipped with software and communication protocols that allow integration with Ecotricity’s Virtual Power Plant (VPP) platform. While not all VPP features may be immediately activated, these systems are configured for remote coordination, load response, and energy sharing functionality. Full VPP participation will be phased in as the pilot progresses.

Yes. While the current pilot uses two tested systems, WeShare is committed to an open and inclusive approach. As the initiative evolves, additional products may be assessed and approved—provided they meet the technical, performance standards and local alignment of the project. This ensures fairness, flexibility, and broad participation for future system providers and households.

To ensure quality, safety, and performance, all systems must comply with New Zealand electrical regulations, be installed by SEANZ-accredited providers, and demonstrate compatibility with VPP coordination requirements.

Yes. All approved systems will include user-accessible monitoring tools to track energy production, consumption, and storage performance, enabling greater transparency and engagement.

Installers must meet specific qualifications and agree to WeShare protocols. While participants may suggest their preferred provider, they must be approved before proceeding.

Performance data will be collected by live monitoring to support the pilot’s research goals. This will be maintained through remote system access and automated reporting tools managed in collaboration with approved providers.

There will be no financial downside to participating in the pilot. Participation may affect how energy is billed or credited, especially as VPP features are activated. Households will remain connected to the grid and continue to receive service from their retailer, typically Ecotricity for VPP integration.

All systems come with standard manufacturer warranties and service agreements, consistent with typical industry practices. Participants also have the assurance of working with a SEANZ-accredited provider, ensuring accountability, technical excellence, and access to qualified support throughout the life of the system.

The equipment is owned 100% by the purchasing customer, as per the purchase and sale agreement with the selected solar solutions provider.

There is no cost to be a part of the pilot or long-term initiative. The systems are purchased directly by customers through standard commercial agreements with approved providers, at competitive prices that reflect WeShare’s commitment to fair access and value for participating households.

Yes. Participation in the Virtual Power Plant is voluntary. Households may choose to opt out of VPP features, though doing so may limit access to certain program benefits or future services.

The WE Share VPP Project is a community initiative that aims to connect solar and battery systems in homes into a coordinated network across the island helping stabilise the grid with renewable power.

A VPP links many home energy systems together using smart software, so they can act like one big power station. It helps balance supply and demand, reduce grid stress, and make better use of solar energy.

Joining the project gives you more control over your energy use, helps your community use cleaner energy, and may lead to savings or shared benefits as the project evolves.

At this stage of the project – yes. The VPP relies on solar and battery systems to generate and store energy that can be shared across the network.

If you’re already with Ecotricity, nothing will change. If not, you’ll need to switch to Ecotricity to participate, as they are the project’s key energy partner providing the Virtual Power Plant platform. This enables your system to connect and operate within the VPP. Your power bill will continue to reflect standard usage, with no financial downside to joining.

There’s no cost to join the VPP itself. You do need to have your own solar and battery system, which is purchased separately through an approved provider.

Yes. Participation is voluntary and you can choose to opt out at any time without penalty.

You can contact your approved solar provider or reach out directly to WeShare through our contact form.

Most major New Zealand banks offer sustainable home loan top-ups or green finance options to support residential solar installations. These may include reduced interest rates, interest-free periods, or bundled efficiency upgrades. Examples:

• ANZ Good Energy Home Loan– Up to $80,000 interest-free for 3 years (as of mid-2025). Must have an existing ANZ mortgage. Offers listed are subject to change. Always confirm directly with your lender or provider.
• Westpac Warm Up Loan– Up to $40,000 interest-free for 5 years. Must have a Westpac home loan or be applying for one. Offers listed are subject to change. Always confirm directly with your lender or provider.
• ASB Better Homes Top-Up– Loan with reduced interest for approved upgrades. Must be an existing ASB mortgage holder. Offers listed are subject to change. Always confirm directly with your lender or provider.
• BNZ Green Home Loan Top-Up– Available for energy efficiency improvements. Requires existing BNZ home lending. Offers listed are subject to change. Always confirm directly with your lender or provider.
• Kiwibank Sustainable Energy Loan– May include subsidised rates for solar and energy upgrades. Must have or apply for a Kiwibank mortgage. Offers listed are subject to change. Always confirm directly with your lender or provider.

Note: Most banks require use of a SEANZ-accredited installer and a valid solar quote as part of the application.

There is currently no national-level, government-funded zero-interest scheme. However:

• Some banks provide green loans with 0% interest (see above).

• QCard / GEM Visa– Short-term interest-free or deferred payment plans through solar vendors
• Lease-to-Own Agreements– Pay monthly over 5–10 years with no upfront capital. Available through some solar companies.
• Power Purchase Agreements (PPAs)– You host a solar system and only pay for the electricity generated. Equipment remains provider-owned.
• Community or Philanthropic Grants– Rare, but available in certain regions for low-income or special-purpose homes
• Bundled Energy Upgrade Loans– Some banks let you combine insulation, heating, and EV chargers into a single sustainable home upgrade package

Refer directly to your chosen funder or provider. Each organisation will have specific criteria and document requirements based on the type of finance being offered.

Yes. Solar-equipped homes often:

• Sell faster than non-solar homes
• Appeal to energy-conscious buyers
• Recover a significant portion of the investment in added value (especially when systems are owned outright)

International and local studies support the correlation between solar installations and improved home sale prices.

That depends on the financing model:

• Owned Systems via Loan– Pay off the loan at sale or negotiate with the buyer to absorb the remaining payments
• Lease / PPA Agreements– May or may not be transferrable. Always confirm contract terms. It’s best to clarify this with your finance provider and include solar asset disclosures during the sales process.

While solar finance opens access, it comes with obligations:

• Missed payments can affect credit standing
• Lease or PPA models may include usage restrictions or exit fees
• Overcapitalising on low-usage homes may delay return on investment Due diligence is key — read all finance terms carefully.

Yes. Many banks offer bundled loans that also cover:

• EV chargers
• Insulation
• Efficient hot water systems
• Battery storage Ask your bank or provider about bundled energy upgrades under their green finance umbrella.

Yes — many banks offer green home loan top-ups that cover whole-home sustainability upgrades, not just solar. For example, Westpac’s Greater Choices Home Loan offers up to NZD 50,000 interest-free over five years, usable for solar panels, battery systems, insulation, heat pumps, EV chargers, double glazing, rainwater tanks, and more

Similarly, ANZ’s Good Energy Home Loan and BNZ’s Green Home Loan Top-Up allow borrowers to fund solar, heating, insulation, EV infrastructure, and water systems with subsidized rates (~1% p.a., fixed for three years).

These bundle offers can substantially reduce overall household energy costs and centralize your sustainability upgrades under a single green loan.

• SEANZ Accredited Installer List
• Bank websites under “Sustainable Home Loans” or “Energy Efficiency Upgrades”
• Solar provider websites (check for QCard/GEM Visa offers)
• For general project information or community involvement pathways, contact WE Share directly.

WE Share welcomes expressions of interest from all product suppliers that offer high-quality, fit-for-purpose solutions backed by strong warranties and service support. Geographic location is not a limitation; however, suitability to project requirements and proven reliability are core evaluation criteria.

All product suppliers must also maintain current membership with the Sustainable Energy Association of New Zealand (SEANZ).

All equipment must be installed by SEANZ-accredited partners or installation professionals holding equivalent certification. Compliance with NZS 5033 and AS/NZS 4777 standards is mandatory. Compliance with new and emerging battery safety standards—such as those related to lithium-ion and high-voltage battery systems—will also be considered essential as they are adopted nationally. Preference will be given to technologies that are marine/coastal-resilient and compatible with Virtual Power Plant (VPP) integration.

WE Share operates as a values-based, community-owned initiative rather than a standard sales channel. While suppliers remain commercial entities, our focus is on forming strategic relationships that go beyond transactional exchanges. For example, some core product partners have demonstrated their alignment by exploring preferred pricing arrangements, offering project-aligned marketing initiatives, or contributing to broader system development efforts where appropriate. This model illustrates how aligned suppliers can contribute meaningfully while maintaining their commercial role.

WE Share is currently focused on residential-scale solar photovoltaic (PV) systems, battery storage, and hybrid inverters suitable for grid-tied applications. WE Share does not seek to exclude any product line that is technically sound and compliant with national standards. In alignment with WE Share principles, the project aims to preserve freedom of choice for end users and avoid exclusivity wherever possible. While we envision broad participation over time, products must demonstrate the ability to integrate with WE Share’s virtual power plant (VPP) framework.

For the initial pilot phase, WE Share is working with two pre-approved product suppliers—Fox ESS and Sigenergy—whose systems have been tested, proven, and approved for deployment in collaboration with Ecotricity. We are committed to including a broad and diverse range of high-quality products in the next stage of the rollout. Suppliers whose systems meet WE Share’s technical and integration requirements are encouraged to contact us to explore participation beyond the pilot phase.

Pricing remains at the discretion of the supplier, individual solutions provider and the end user. However, WE Share welcomes suppliers who offer partnership-based models that reflect shared community value—such as support for education, training, or innovation initiatives.

Interested parties should submit a formal Expression of Interest (EOI) via the WE Share website. The EOI should include detailed product specifications, distribution capabilities, and support structures. While direct alignment with WE Share’s values is not required, applicants are encouraged to demonstrate how their offerings are suitable for integration into the community-focused, grid-responsive model WE Share is building. WE Share is also highly open to innovative product solutions and may give priority to offerings that support or enhance the project’s strategic aims.

Approved suppliers may gain early visibility through pilot deployments, inclusion in co-design sessions, eligibility for future scale-up phases, and alignment with a nationally scalable model for distributed energy. Participation may contribute to environmental and social procurement objectives, particularly for funders and institutional partners who prioritise ESG-aligned outcomes.

WE Share aims to be as inclusive as possible and to offer the widest reasonable freedom of choice for end users, in alignment with WE Share’s guiding principles. All technically sound, compliant products that can integrate with the project’s systems are eligible for consideration. EOIs are reviewed by the WE Share coordination team in consultation with relevant community and technical stakeholders. Evaluation is based on technical merit, service and support capability, and long-term fit with the project’s strategic goals. Cost competitiveness is considered, but not the sole determining factor.

WE Share supports residential and small commercial solar and battery installations that align with its community-focused, clean energy goals. These include systems capable of participating in Virtual Power Plant (VPP) programs and energy-sharing networks. The program prioritises technical consistency, safety, and integration readiness.

No, WE Share is vendor-neutral. However, during the pre-pilot phase, two inverter and battery brands — SIGENERGY and FOXESS — have been successfully trialed and approved for their performance, EPS functionality, and compatibility with VPP protocols. Other compliant systemwill be assessed and added as the program evolves.

WE Share works in collaboration with energy retailer Ecotricity and infrastructure partner Vector. The VPP orchestration platform is currently under development, with technical requirements being defined in partnership with Our Energy. Installers are not expected to manage VPP integration directly but must ensure system compatibility.

• Minimum 5 kWp PV array and 5 kWh usable battery storage
• Smart inverter (AS/NZS 4777.2 compliant) with EPS capability
• SIGENERGY, FOXESS, or equivalent VPP-ready systems (pre-approved)
• Smart meter (5–30 min interval data resolution)
• Remote monitoring and communication capability
• Reliable broadband or cellular internet connection
• Compliance with AS/NZS 5033, 3000, and 4777 standards

Yes. Installers must be SEANZ-accredited or work under direct supervision of an accredited provider. All electrical work must be carried out by licensed electricians in accordance with New Zealand regulations and best practices.

• Detailed system specifications and VPP technical guides
• Site installation framework and QA checklists
• Optional templates and guidance for coordinating installation milestones
• Guidance on customer onboarding, compliance, and documentation

Installers are encouraged to use plain language when describing VPP participation benefits. These include:

• Potential for improved value from solar exports, depending on market and trading conditions
• Access to clean, locally generated energy
• Participation in a resilient, future-oriented energy model
• Transparent energy tracking and customer control

Yes. WE Share is a facilitator and does not control or manage the sales process. However, to participate in the program, system designs must meet WE Share’s technical specifications and compliance criteria. Installers are encouraged to confirm compatibility before quoting to ensure systems are eligible for VPP integration.

Installers may benefit from increased job volume and reputational alignment with a values-based, innovative energy model. Further incentives may emerge as the program scales, particularly around VPP-enabled services.

All official updates, documentation, and installer resources will be provided via the WE Share Installer Portal. Technical support can also be reached for specific questions or onboarding queries.