Thames, Waikato Region, New Zealand is a location with moderate potential for solar energy generation throughout the year. Situated in the Southern Temperate Zone at latitude -37.1387 and longitude 175.5356, Thames experiences significant seasonal variations in solar energy production.

Seasonal Solar Performance

Solar panels in Thames perform best during summer months, generating approximately 7.08kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 5.19kWh/day per kW. Autumn production drops to 3.80kWh/day, while winter sees the lowest output at just 2.43kWh/day per kW of installed capacity.

This seasonal pattern creates a significant difference between summer and winter production, with summer generating nearly three times the electricity of winter months. This variation is important to consider when planning a solar installation that needs to meet year-round energy needs.

Optimal Panel Installation

For fixed solar panel installations in Thames, Waikato Region, the ideal tilt angle to maximize year-round energy production is 32 degrees facing North. This angle optimizes the annual solar harvest by balancing seasonal variations and accounting for the Earth's elliptical orbit.

Environmental and Weather Considerations

Thames faces several environmental factors that could impact solar production. The coastal location may expose panels to salt spray, which can gradually corrode components and create a film on panel surfaces, reducing efficiency. Regular cleaning with fresh water can mitigate this issue.

The region also experiences periods of rainfall and cloud cover, particularly during winter months, contributing to the lower winter production figures. While these cannot be eliminated, using high-efficiency panels with good low-light performance can help maximize energy harvest during overcast conditions.

Tree coverage and surrounding hills may cause shading issues in some locations around Thames. A thorough site assessment before installation can identify potential shading problems, and microinverters or power optimizers can be employed to minimize the impact of partial shading on system performance.

Overall, Thames offers reasonable solar potential with significant seasonal variations that should be carefully considered when sizing a system to meet year-round energy needs.

Note: The Southern Temperate Zone extends from -35° latitude South down to -66.5° latitude.

So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 105 locations across New Zealand. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in New Zealand by location

Solar output per kW of installed solar PV by season in Thames

Seasonal solar PV output for Latitude: -37.1387, Longitude: 175.5356 (Thames, New Zealand), based on our analysis of 8760 hourly intervals of solar and meteorological data (one whole year) retrieved for that set of coordinates/location from NASA POWER (The Prediction of Worldwide Energy Resources) API:

 

Ideally tilt fixed solar panels 32° North in Thames, New Zealand

To maximize your solar PV system's energy output in Thames, New Zealand (Lat/Long -37.1387, 175.5356) throughout the year, you should tilt your panels at an angle of 32° North for fixed panel installations.

As the Earth revolves around the Sun each year, the maximum angle of elevation of the Sun varies by +/- 23.45 degrees from its equinox elevation angle for a particular latitude. Finding the exact optimal angle to maximise solar PV production throughout the year can be challenging, but with careful consideration of historical solar energy and meteorological data for a certain location, it can be done precisely.

We use our own calculation, which incorporates NASA solar and meteorological data for the exact Lat/Long coordinates, to determine the ideal tilt angle of a solar panel that will yield maximum annual solar output. We calculate the optimal angle for each day of the year, taking into account its contribution to the yearly total PV potential at that specific location.

Seasonally adjusted solar panel tilt angles for Thames, New Zealand

If you can adjust the tilt angle of your solar PV panels, please refer to the seasonal tilt angles below for optimal solar energy production in Thames, New Zealand. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 32° North tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
21° North in Summer	42° North in Autumn	52° North in Winter	30° North in Spring

Our recommendations take into account more than just latitude and Earth's position in its elliptical orbit around the Sun. We also incorporate historical solar and meteorological data from NASA's Prediction of Worldwide Energy Resources (POWER) API to assign a weight to each ideal angle for each day based on its historical contribution to overall solar PV potential during a specific season.

This approach allows us to provide much more accurate recommendations than relying solely on latitude, as it considers unique weather conditions in different locations sharing the same latitude worldwide.

Calculate solar panel row spacing in Thames, New Zealand

We've added a feature to calculate minimum solar panel row spacing by location. Enter your panel size and orientation below to get the minimum spacing in Thames, New Zealand.

Our calculation method

1. Solar Position:
   We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
2. Shadow Projection:
   We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
3. Minimum Spacing:
   We add the shadow length to the horizontal space occupied by tilted panels.

This approach ensures maximum space efficiency while avoiding shading during critical times, as the Winter solstice represents the worst-case scenario for shadow length.

Topography for solar PV around Thames, New Zealand

Thames, New Zealand is nestled in a unique topographical setting where the Coromandel Peninsula meets the western shores of the Firth of Thames. The town itself sits on a narrow coastal plain, with the imposing Coromandel Range rising dramatically behind it. This landscape creates a distinctive environment that influences both the local climate and potential for renewable energy development. The immediate area around Thames features a relatively flat coastal strip that quickly transitions to steep, forested hillsides. The Coromandel Range, which dominates the eastern backdrop of the town, reaches elevations of over 600 meters within just a few kilometers of the coast. These mountains run along the spine of the Coromandel Peninsula and create a significant topographical barrier.

Coastal Plains and Lowlands

The flat areas around Thames primarily consist of the coastal plain and alluvial fans formed by rivers and streams flowing from the mountains. These lowlands extend northward and southward along the coastline, creating narrow bands of flat terrain before the land begins to rise. The Waihou River and smaller waterways have deposited sediments over thousands of years, forming these fertile plains. Immediately to the south of Thames, the plains widen somewhat as they merge with the broader Hauraki Plains, which represent one of the largest areas of flat land in the region. These areas have historically been used for agriculture due to their relatively level terrain and fertile soils.

The Coromandel Range

The eastern side of Thames is dominated by the steep slopes of the Coromandel Range. These mountains are characterized by dense native forest, deeply incised valleys, and numerous streams that flow westward toward the Firth of Thames. The range is composed primarily of ancient volcanic rocks, with some sections showing evidence of the area's gold mining history. The topography becomes increasingly rugged as one moves eastward from Thames, with numerous ridges, valleys, and peaks creating a complex landscape. Many of these hillsides have slopes exceeding 20 degrees, making them challenging for development of any kind.

Potential Areas for Solar PV Development

For large-scale solar photovoltaic development, the most suitable areas near Thames would be the flat to gently rolling sections of the Hauraki Plains to the south of the town. These areas offer several advantages for solar installations: The wide, open plains provide ample space for arrays of solar panels without requiring significant land modification. The relatively level terrain reduces construction costs and complexity compared to hillside installations. The southern plains also have fewer obstructions that might cast shadows on solar panels, maximizing potential energy capture throughout the day. Some of the lower, gently sloping hillsides on the western edges of the Coromandel Range could also be considered for solar development, particularly those with a western aspect that would receive afternoon sun. However, these would likely be smaller installations due to the constraints of the terrain. The coastal areas immediately around Thames itself have limited potential for large-scale solar development due to existing urban development and the relatively narrow width of the coastal plain in this area. The steep, forested hillsides of the Coromandel Range are generally unsuitable for large solar installations due to their slope, aspect, and ecological value. The agricultural lands of the Hauraki Plains, particularly the areas between Thames and the towns of Paeroa and Te Aroha to the south, represent the most promising locations for substantial solar PV development. These areas combine favorable topography with proximity to existing transmission infrastructure, making them potentially viable locations for commercial-scale solar energy production.

New Zealand solar PV Stats as a country

New Zealand ranks 78th in the world for cumulative solar PV capacity, with 146 total MW's of solar PV installed. Each year New Zealand is generating 29 Watts from solar PV per capita (New Zealand ranks 58th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in New Zealand?

Yes, there are several incentives for businesses wanting to install solar energy in New Zealand. The government offers a range of grants and subsidies to help businesses reduce their energy costs and increase their use of renewable energy sources. These include the Solar PV Grant Scheme, which provides up to $20,000 per installation towards the cost of installing solar photovoltaic (PV) systems; the Low Emission Vehicles Contestable Fund, which provides funding for electric vehicles; and the Energy Efficiency and Conservation Authority’s Business Energy Management Programme, which helps businesses identify ways to save money on their energy bills. Additionally, some local councils offer rates rebates or other incentives for businesses that install solar panels.

Do you have more up to date information than this on incentives towards solar PV projects in New Zealand? Please reach out to us and help us keep this information current. Thanks!

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Compare this location to others worldwide for solar PV potential

The solar PV analyses available on our website, including this one, are offered as a free service to the global community. Our aim is to provide education and aid informed decision-making regarding solar PV installations.

However, please note that these analyses are general guidance and may not meet specific project requirements. For in-depth, tailored forecasts and analysis crucial for feasibility studies or when pursuing maximum ROI from your solar projects, feel free to contact us; we offer comprehensive consulting services expressly for this purpose.

Helping you assess viability of solar PV for your site

Calculate Your Optimal Solar Panel Tilt Angle: A Comprehensive Guide

Enhance your solar panel's performance with our in-depth guide. Determine the best tilt angle using hard data, debunk common misunderstandings, and gain insight into how your specific location affects solar energy production.