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Cyril Treacy

I’ve recouped my investment in just three years! With my electric vehicles now 50% charged at home using solar power, and working from home, it’s the perfect setup. Substantial savings of around €700 annually on electricity and an additional €2000 on diesel make the decision even more rewarding. With no electricity bills since summer 2022 and a smart meter earning me 24 cents for every exported kWh, I anticipate saving an impressive €70,000 over the 25-year lifetime of the system.


I Have my Money back just 3 years later

In the bustling city of Dublin, a forward-thinking gentleman, Cyril Treacy embarked on a money-saving journey with NRG Panel, the leading installer of cutting-edge solar panels in Dublin and efficient air-to-water heat pumps.

Cyril wisely invested €7200 in a system comprising 15, 355Kw panels complemented by a Solis 5KWH inverter, Harvi, Eddi, and Zappi. Little did Cyril know that this investment would revolutionise their energy consumption and lead to remarkable financial benefits, paving the way for substantial savings on electricity bills.

Fast forward three years, and Cyril found themselves not just breaking even but enjoying a surplus. Working from the comfort of their solar-powered home in Dublin, Cyril discovered the joy of having the two electric vehicles parked in the driveway now 50% charged at home, thanks to the efficient setup of solar panels in Dublin.

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The house transitioned from an E1 to an A2 BER rating

The financial gains were impressive – Cyril experienced a saving of €700 annually on electricity costs, and an additional €2000 on diesel, showcasing the tangible benefits of saving money with solar.

Diligent about tracking expenses, Cyril monitored utility bills for tax purposes. The last 12 months saw €600 in electricity bills and an equal amount for gas.

The house, having transitioned from an E1 to an A2 rating, made it easy to heat with underfloor heating, further contributing to the narrative of saving money with a heat pump in Dublin.

Since the summer of 2022, Cyril had not paid an electricity bill, thanks to a €600 credit combined with €287 in export payments over the past year, illustrating the benefits of the microfinance and financial wisdom of the investment in solar panels in Dublin.

The first €150 had just landed recently, and with the smart meter now in play, Cyril would receive 24 cents for every exported kWh, potentially adding €48 to their savings in August alone, demonstrating the continued benefit of lower electricity bills.

I expect to save €70,000 over the 25-year lifetime of the system

In November he made a strategic move to a smart meter, coupled with Energia’s EV plan offering 8 cents from 2-6 am for winter charging and 36 cents during the rest of the day, further optimised Cyril’s energy consumption. The solar panels, performing optimally from February to October, seamlessly complemented this plan.

With an eye on the future, Cyril anticipates staggering savings of €70,000 over the 25-year lifetime of the solar system.

As the smart meter diligently tracked and rewarded every unit of energy exported, Cyril basked in the warmth of both financial savings and the eco-friendly glow of their solar-powered haven in the heart of Dublin.

And so, in this energy-efficient case study, Cyril Treacy proved that saving money with solar and a heat pump in Dublin is well possible and that having NRG Panel as his solar and heat pump installer was a wise decision indeed.

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Read what our customer Cyril Treacy has to say about our solar panels Dublin solution.

The following case study was conducted by NRG Panel. This case study contains imagery and details of a genuine solar PV panel installation carried out by our team.  This customer has given us permission to use their home as an example to encourage others to make the switch to solar PV. NRG Panel are the leading solar panel installers in Ireland. We specialise in solar PV and air to water heat pumps and have completed over 8,000 installation nationwide. We have over 20 years’ experience and are SEAI registered along with triple ISO accredited so you can be sure you have made the right choice going with us.

This case study was carried out on an installation by NRG Panel and is a great example of solar panels Dublin

Cyril got in contact with us back in September 2020 as he wanted to see are solar panels worth it for him, he had been looking into them for a while and had done his research. He had decided he wanted to decarbonate his life in 2020 by switching from two diesels to 2 EVs and installing a powerful solar PV system saving approx. 8 tons of CO2 each year.

Cyril was living in a 1950’s two-storey semi-detached house. His roof was tiled and was southeast facing which is a good orientation for solar panels. Prior to the installation Cyril’s BER rating was B2 and moved to A2 with solar – astoundingly his BER was an E1 when he bought the house in 2012, those letters add a lot of value to the property as it is now rated as a new build. With a BER of B2 Cyril qualified for the SEAI grant incentive of €1,800 for panel-only installation, he said that the process was simple and painless. It is worth noting that this grant can increase up to €3,000 if you add a battery system to your installation.


After a consultation, our energy expert designed a bespoke system for Cyril. They decided that the best option based on the monthly electricity usage, lifestyle, roof space and orientation would be a 15-panel system on the back south east facing roof with the inverter installed in attic.  Cyril was interested in heating his water, so we added on an Eddi diverter and this was installed in the hot press.

Cyril also owns two EV’s, so we installed a Zappi car charger at the front door.

The system was installed in November 2020 in about 4 hours.


We aimed to save this customer up to 50% on his bills and to also provide him with some hot water, and EV charging all the while reducing his carbon footprint and increasing his BER rating.

We caught up with Cyril 5 months after the solar panel install and here is what he had to say. Please notice that he was generating solar power and heat throughout the winter months.

“I have already generated 1,420 kWh and saved 1.4 tons of CO2 plus saved €226 on my electric bill in just 5 months and have effectively an emission-free house (electric, hot water and motoring)”.

With the new ESB Feed in tariff  I can start to help power some neighbour’s homes as well saving more carbon emissions and get paid for the surplus reducing the payback time which I estimate at 4.5 years. I estimate savings on my electric bill to be about 70% or €70 a month for 8 months or the year, €500 on motoring vs diesel which was €1,200 plus a year.

Cyril’s only wish was that he had done this a couple of years ago – we all need to tread more lightly on the planet and reduce our carbon footprint actively.

Solar PV is worth the investment and NRG Panel are the leading installer but don’t take our word – Check out this wicked review by Cyril after the install.

‘Highly recommend NRG panel for Solar Panel systems, after a lot of research and many quotes I selected NRG as best value and expertise on the market. They did up detailed plans with solar gain and suggested the panel setup to charge two EV’s from a Zappi, an Eddi for hot water and had it all done in half a day. Lovely people to deal with from Conal to Naomi very knowledgeable and helpful.’’

UPDATE  08/22 : Cyril updated us on his savings with the increase in the cost of living he has redone the maths taking into account higher diesel prices, ROI was 30 months but he got the entire €7,200 cost back in mostly diesel savings on two EVs and his last electric bill was €34 ! Last years electric bill was €700 and €300 of that was standing charges etc.  He also estimated that he will get €193 back on the FIT as he has a day night meter…. Amazing !!!

Interested to know what our customers think? you can see all our Google reviews HERE

We are the leading installer for solar panels Dublin and nationwide and our customers agree!

We use a consultative approach, so you will not get that pushy sales pitch that is all too prevalent in our industry – our consultants are highly trained and our solar panel consultations are completely free.

You have no obligation to proceed with the installation if you decide solar PV or any of our products isn’t right for you after the consultation.

However, you may like the idea of saving up to 50% on your electricity bills along with heating your water, charging your car, reducing your carbon footprint and getting paid for excess energy.

Who knows, maybe you could be part of our case studies next year!