Project Solar Evolution Max 500W solar panel review

Founded in 2011 and with over 45,000 solar installations under its belt, Project Solar is the largest solar installer in the UK. The brand also manufactures some of the best solar panels you can buy, including the latest Project Solar Evolution Max 500W.

In this review, we explore the Project Solar Evolution Max 500W’s specs, efficiency and warranties to see how it compares to other solar panels.

Find out about 0% VAT measures on energy efficiency installation.

Project Solar Evolution Max 500W technical information

Pros and cons of the Project Solar Evolution Max 500W

Pros

The Project Solar Evolution Max 500W is the most efficient solar panel we’ve reviewed

Project Solar received the highest customer satisfaction score of all the brands we reviewed in our survey*.

Project Solar is the only solar panel provider to offer lifetime product and performance warranties.

Project Solar is recommended by 97 per cent of its customers, according to our survey.

Cons

Project Solar doesn’t advertise the degradation rates of its solar panels.

How does the Project Solar Evolution Max 500W solar panel work?

How does the Project Solar Evolution Max 500W compare to other solar panels?

This is how the Project Solar Evolution Max 500W compares to other solar panels in 2025:

Solar panel brand	Efficiency	Power output	Product warranty	Performance warranty
Project Solar Evolution Max	25.50%	500W	Lifetime	Lifetime
Trina Vertex Bifacial Dual Glass	22.70%	505W	15 years	30 years
REC Alpha Pure RX Series	22.60%	470W	20 years	25 years
Aiko Neostar 3P54	23.50%	470W	25 years	30 years
Perlight 515W Double Glass PLK Transparent	23.17%	515W	30 years	30 years
JA Solar JAM60S4 LR	22.70%	530W	12 years	25 years
Jinko Tiger Neo 54HL4R-B 445W	22.27%	445W	25 years	30 years
Suntech Ultra V Pro Mini	23.00%	460W	15 years	30 years

How much do Project Solar’s solar panels cost?

Project Solar does not publish the cost of their solar panels online. Instead, the company provides customers with a personalised quote upon request.

However, during mystery shopping, the company quoted us a price of £350 per panel, making Project Solar one of the most expensive brands out there.

The cost of your Project Solar panels will depend on the size of your system, whether you add a battery and the price of your solar panel installer. You may also be able to get a solar panel grant to reduce the cost of your system.

Maintaining the Project Solar Evolution Max 500W

Project Solar’s panels require very little maintenance or servicing. If, however, a storm leaves bird droppings or debris on your panels and you’re concerned about degradation, you can use an ordinary garden hose to clear the obstruction.

You should avoid climbing on your roof to clean your panels; instead, remain on the ground and use a long hose. However, regular rain showers should be sufficient to keep your panels clean.

Warranties

Project Solar is known for its industry-leading limited lifetime product and performance warranties. But what does that mean in practice?

Well, the manufacturer of the panels is committed to repair, replace or refund solar module(s) that are defective, provided they are installed professionally and used as instructed. However, this does not cover the removal, shipping or re-installing of the solar panel, nor any testing costs you may have incurred to establish a panel is faulty.

The limited power (performance) warranty works as follows: if the solar panel’s power output drops below 95 per cent of the peak power in standard test conditions (STC) within 12 years due to a manufacturing defect, a fact which must be verified by the manufacturer, it reserves the right to make up the loss in power by either providing additional modules or an appropriate residual market value of the product as compensation.

This also applies if power output drops to below 90 per cent of the minimum peak power in STC within 25 years, or if the output drops more than 3W per year from 25 years to 99 years after the installation.

Project Solar customer reviews

Meanwhile, 43 per cent of the Project Solar customers we surveyed* say they would “very much recommend” the brand, and 54 per cent say they would “somewhat recommend” its solar panels.

Final recommendation

Based on our survey, Project Solar stands out from the crowd in terms of meeting the expectations of its customers. The brand’s lifetime warranties are unmatched and great for peace of mind.

However, there are a couple of drawbacks to consider. For a start, the price of Project Solar solar panels also comes on quotation and is on the high end of the spectrum, which may put some households off. The fact that degradation rates are not disclosed is also a red flag for transparency.

Project Solar FAQs

Is Project Solar a good company?

Project Solar has over 14 years of demonstrable experience manufacturing and installing solar panels, and boasts plenty of positive reviews online. Our survey of over 2,000 solar panel owners in the UK* revealed that 94 per cent of Project Solar customers were satisfied with the service they received from the brand.

Who owns Project Solar UK?

Project Solar UK Limited is a private company currently led by CEO Simon Peat.

When we review solar panels, our final score is based on the following:

• Durability
  • Rate of degradation after 10 years
  • Product warranty
  • Performance warranty
• Performance
  • Panel efficiency
  • Power-to-weight ratio
  • Power-per-square-metre ratio
• Customer satisfaction
  • Results of our survey of more than 2,000 solar panel owners in the UK
• Sustainability
  • Are the panels lead-free?
  • Do the panels use recycled materials?
  • Does the provider recycle old solar panels?

For more information, read our article on how we review solar panels.