System Size
10 Panels + 1 Inverter
Premium Jinko monocrystalline solar panels installed on a concrete tile roof with a GoodWe inverter installed on a south-facing brick wall.
Case Study
Case Study: Kingston
Solar Installation for
Lewis R.
A comprehensive solar energy solution for a single person household in Kingston, Tasmania, designed to replace an old system with more efficient panels and inverter and reduce annual power bills.
Project Snapshot
The Installation
Roof Type
Concrete Tile
The old racking and brackets were replaced with new equipment, while no tiles were broken and conduit routing was kept discreet.
Previous Bill
$1,750/yr
Approximate annual power bill before the solar installation based on Resi Solar Tasmania's energy consumption analysis.
Results
Estimated Savings
Estimated Savings
$800–1,200
Projected annual savings based on current energy usage patterns.
Payback Period
About 5 Years
Estimated return on investment based on current energy prices.
System Lifespan
25 Years
Expected operational life of the solar panel system and inverter.
Annual ROI
12-15%
Approximate annual return on investment based on projected savings.
The Problem
Lewis was facing rising energy costs, with an annual power bill of approximately $1,750. His existing SMA inverter was more than 10 years old, and he wanted to replace the ageing equipment with a newer, more efficient solar system that would reduce his reliance on the grid and support his home for years to come.
Carson met Lewis at his property to review the existing system, energy use and upgrade options. He then provided several transparent proposals covering removal of the old system and all inclusions, estimated generation from the proposed system, and a seasonal production-versus-consumption curve based on his historical usage and 3D shade modelling, and adjusted to account for the old system's contribution. Each option also outlined the estimated bill reduction, payback period and available payment options, giving Lewis a clear basis for choosing the right long-term solution.
The Solution
The subcontractor team at Derwent Electrical installed a 10-panel solar system designed by Resi Solar Tasmania, specifically tailored to Lewis's annual power bill, roof dimensions, and north-east and north-west orientations. This system not only reduces Lewis's energy bills but also provides a clean, renewable source of power for his safe haven.
The installation team from Derwent Electrical are highly experienced at installing on concrete tile roofs — after all, this is Tasmania. They updated Lewis on their whereabouts on the morning of his installation and were on time, friendly and proficient. When the weather took a turn for the worse near the end of the day, Carson's Canadian-style hot chocolate with maple syrup kept them in good spirits. Before finishing up and heading on their way, Ben walked Lewis through the GoodWe app for monitoring. We are really grateful to our subcontractor partners. Hip hip hooray!
Designed to make the most of the available roof space, the system helps improve energy efficiency while reducing reliance on traditional power sources. It also gives Lewis greater confidence knowing his home is supported by a reliable, sustainable energy solution for years to come.
Are you curious how solar can benefit you? Check out our packages page or custom proposal page and reach out to receive your free, personally tailored Resi Solar Tasmania solar proposal today!
Gallery
Installation Photos
Customer Feedback
What Lewis R. Says
Reviews From GoogleCarson from Resi Solar was great! He's very attentive and eager to answer questions and is very clear about the installation process and what to expect. The install went smoothly, Derwent Electrical did a great job with the install and it looks perfect! The installers were nice to deal with and cleaned up any mess before they left. The system performs really well, and for a great price, I couldn't be more pleased with the result.
Lewis
TAS - 7050
Reviews From SOLARQUOTESCarson from Resi Solar was great! He's very attentive and eager to answer questions and is very clear about the installation process and what to expect. The install went smoothly, Derwent Electrical did a great job with the install and it looks perfect! The installers were nice to deal with and cleaned up any mess before they left. The system performs really well, and for a great price, I couldn't be more pleased with the result.
Lewis
TAS - 7050
Reviews From Trustpilot%20-%20https://sketchapp.com%20--%3e%3cg%20id='Trustpilot_ratings_5star-RGB'%20stroke='none'%20stroke-width='1'%20fill='none'%20fill-rule='evenodd'%3e%3cg%20fill-rule='nonzero'%3e%3crect%20id='Rectangle-path'%20fill='%2300B67A'%20x='0'%20y='0'%20width='96'%20height='96'%3e%3c/rect%3e%3crect%20id='Rectangle-path'%20fill='%2300B67A'%20x='104'%20y='0'%20width='96'%20height='96'%3e%3c/rect%3e%3crect%20id='Rectangle-path'%20fill='%2300B67A'%20x='208'%20y='0'%20width='96'%20height='96'%3e%3c/rect%3e%3crect%20id='Rectangle-path'%20fill='%2300B67A'%20x='312'%20y='0'%20width='96'%20height='96'%3e%3c/rect%3e%3crect%20id='Rectangle-path'%20fill='%2300B67A'%20x='416'%20y='0'%20width='96'%20height='96'%3e%3c/rect%3e%3cpath%20d='M48,64.7%20L62.6,61%20L68.7,79.8%20L48,64.7%20Z%20M81.6,40.4%20L55.9,40.4%20L48,16.2%20L40.1,40.4%20L14.4,40.4%20L35.2,55.4%20L27.3,79.6%20L48.1,64.6%20L60.9,55.4%20L81.6,40.4%20L81.6,40.4%20L81.6,40.4%20L81.6,40.4%20Z'%20id='Shape'%20fill='%23FFFFFF'%3e%3c/path%3e%3cpath%20d='M152,64.7%20L166.6,61%20L172.7,79.8%20L152,64.7%20Z%20M185.6,40.4%20L159.9,40.4%20L152,16.2%20L144.1,40.4%20L118.4,40.4%20L139.2,55.4%20L131.3,79.6%20L152.1,64.6%20L164.9,55.4%20L185.6,40.4%20L185.6,40.4%20L185.6,40.4%20L185.6,40.4%20Z'%20id='Shape'%20fill='%23FFFFFF'%3e%3c/path%3e%3cpath%20d='M256,64.7%20L270.6,61%20L276.7,79.8%20L256,64.7%20Z%20M289.6,40.4%20L263.9,40.4%20L256,16.2%20L248.1,40.4%20L222.4,40.4%20L243.2,55.4%20L235.3,79.6%20L256.1,64.6%20L268.9,55.4%20L289.6,40.4%20L289.6,40.4%20L289.6,40.4%20L289.6,40.4%20Z'%20id='Shape'%20fill='%23FFFFFF'%3e%3c/path%3e%3cpath%20d='M360,64.7%20L374.6,61%20L380.7,79.8%20L360,64.7%20Z%20M393.6,40.4%20L367.9,40.4%20L360,16.2%20L352.1,40.4%20L326.4,40.4%20L347.2,55.4%20L339.3,79.6%20L360.1,64.6%20L372.9,55.4%20L393.6,40.4%20L393.6,40.4%20L393.6,40.4%20L393.6,40.4%20Z'%20id='Shape'%20fill='%23FFFFFF'%3e%3c/path%3e%3cpath%20d='M464,64.7%20L478.6,61%20L484.7,79.8%20L464,64.7%20Z%20M497.6,40.4%20L471.9,40.4%20L464,16.2%20L456.1,40.4%20L430.4,40.4%20L451.2,55.4%20L443.3,79.6%20L464.1,64.6%20L476.9,55.4%20L497.6,40.4%20L497.6,40.4%20L497.6,40.4%20L497.6,40.4%20Z'%20id='Shape'%20fill='%23FFFFFF'%3e%3c/path%3e%3c/g%3e%3c/g%3e%3c/svg%3e)
Carson from Resi Solar was great! He's very attentive and eager to answer questions and is very clear about the installation process and what to expect. The install went smoothly, Derwent Electrical did a great job with the install and it looks perfect! The installers were nice to deal with and cleaned up any mess before they left. The system performs really well, and for a great price, I couldn't be more pleased with the result.
Lewis
TAS - 7050