Today, Wonder Watt is launching a smart and predictive charging solution for users with Solax inverters and battery systems. This makes Solax our third successful inverter integration after Growatt and GivEnergy.

Wonder Watt uses its own in-house solar forecast prediction algorithm, to prevent unnecessary charging, as well as supports Octopus Energy’s smart tariffs like Agile, Intelligent Octopus Go (IOG) etc. via a modern and easy to use web app user interface.

This new integration means users of Solax inverters now have an intuitive way of setting up multiple schedules for charging from the grid as well as dynamic schedules for forced discharging/export.

In addition, our work on Agile Octopus integration is supported now for Solax too.

Inverters like the Solax X1 and flavours thereof are confirmed to be working. Others are likely to also be compatible.

To get started, all you need is a Google account. No upfront payment details, no hidden costs.

Don’t like it, don’t use it. We give you two weeks to work out whether our service helps you out or saves you time.

We’re always open for suggestions, so in any case, please let us know in our Community Forums.

We already support Growatt and GivEnergy, so Solax is our third integration, with more to follow still!

With our in-house built solar forecasting algorithms we calculate solar yield for your installation and use that information to charge your battery during off-peak/TOU tariffs (like Economy 7, Agile Octopus, Octopus Flux or Octopus Go) or export to grid depending on the tariffs and settings you have specified.

Take a look at the explanation of our Service Dashboard, and sign-up for free 14 day trial.

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Updated November 2024, to reflect reduced referral fee.

Are you considering purchasing a Tesla in the UK or US? Now might be the perfect time to make your move.

Tesla has just relaunched its ‘Refer and Earn’ program in the United Kingdom and the USA, offering new buyers a substantial £500 or $500 discount on their purchase. People referring get £250 Tesla shop credit.

The discount code willem775252 also applies to US customers and the same referral code can be used. Model S, 3, X and Y are all eligible for the discount.

This article will guide you through everything you need to know about this offer and how you can take advantage of it.

The £500 Tesla discount: What you need to know

Tesla’s new referral program is straightforward: use a referral code from an existing Tesla owner when you purchase your new Tesla, and you’ll receive a £500 discount off the purchase price. It’s that simple. This discount applies to any new Tesla vehicle orders.

You can simply click the button below when booking a test drive or before placing your purchase and the £500 discount should be applied at checkout.

Additional savings: 0% APR financing

To sweeten the deal even further, Tesla is currently offering a 0% APR financing deal in the UK on a Model Y. This offer includes:

• 0% Annual Percentage Rate (APR)
• Zero down payment on Hire Purchase plans

Combined with the £500 referral discount, this financing option creates an incredibly attractive package for potential Tesla buyers in the UK.

Why Now is the time to buy a Tesla in the UK

1. Immediate Savings: The £500 discount is applied directly to your purchase price, providing immediate savings.

2. Favorable Financing: With the 0% APR offer on the Model Y, you can spread the cost of your Tesla without incurring interest charges.

3. Long-term Savings: Don’t forget the potential savings on fuel and maintenance costs associated with electric vehicles.

4. Environmental Impact: By choosing a Tesla, you’re contributing to the reduction of carbon emissions and supporting sustainable transport.

5. Future-Proofing: As the UK pushes towards greener transportation, owning an electric vehicle may provide additional benefits in the future, such as exemptions from certain urban driving charges.

Maximising your Tesla purchase

To get the most out of your Tesla purchase, consider these tips:

1. Research Models: Explore the different Tesla models to find the one that best fits your needs and budget.

2. Calculate Total Savings: Factor in the £500 discount, potential financing savings, and long-term savings on fuel and maintenance.

3. Check Charging Options: Research charging infrastructure in your area and consider home charging solutions.

4. Test Drive: If possible, schedule a test drive to experience Tesla’s performance firsthand.

5. Act Quickly: While there’s no announced end date for this program, such offers don’t last forever. If you’re seriously considering a Tesla, now might be the time to act.

Conclusion

Tesla’s new referral program in the UK offers a compelling opportunity for potential buyers. The £500 discount, combined with the current 0% APR financing offer, makes this an optimal time to consider purchasing a Tesla.

Don’t miss out on this chance to join the electric revolution and drive home in your new Tesla – with an extra £500 in your pocket.

Disclaimer: We do get £250 Tesla shop credit for each referral, up to a maximum of 10 referrals. After that, the referral code cannot be used anymore.

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A new chapter for Wonder Watt: Introducing our subscription model

UPDATED 02-OCT-2024: Included details on Annual Subscription plan

Over the last year and a half, Wonder Watt has been a true labour of love. What started as a vision to offer an innovative and easy-to-use solar battery management service has blossomed into a thriving platform, thanks to the incredible support from all of you, our loyal users.

We have grown together, and your feedback in our forums has shaped Wonder Watt into what it is today. Every comment, suggestion, and experience you’ve shared has really helped us to improve.

However, as our community and user-base has grown, so have the costs associated with running the platform. Maintaining the high level of support and continuously developing new features requires significant resources.

After much thought, we’ve decided that in order to keep Wonder Watt sustainable and growing, we’ll be moving to a subscription model starting from October 2024.

What does this mean for you?

Beginning October, users will be asked to subscribe to Wonder Watt for ongoing access to our platform at a price of £6 per month. Users who joined before October are eligible for the discounted 3-monthly plan.

Below are the 3 subscription plans we will be offering:

Subscription Type	Billing Cycle	Discount	Monthly Price	Total Cost
Wonder Watt 3-Monthly Sub	3-months	None	£6.00	£18.00 per 3-months
Wonder Watt 3-Monthly Sub (Discounted)	3-months	11% Discount	£5.33	£15.99 per 3-months
Wonder Watt Annual Subscription	Annual	25% Discount	£4.50	£54.00 per year

No-quibble full-refund within 7 days of purchase.

Refunds requested after 7 days but before 6 weeks will be refunded proportional to the time left in the subscription.

No refunds after 6 weeks - access of service will continue until end of subscription term.

A refund can be requested by dropping us an e-mail here and request a refund. Make sure to report your WattID identifier so we can identify your account.

Why are we doing this?

We’ve been able to offer Wonder Watt for free up until now, but as we continue to expand our services, improve our infrastructure, and launch new features, it’s simply no longer feasible to cover all the rising costs ourselves.

Moving to a subscription model ensures that we can keep providing the best possible service without sacrificing quality. This will also enable us to keep building new tools and features for you - whether it’s enhanced energy tracking, more inverter and tariff integrations, or more autonomous schedules to help you save.

How will payments work?

To minimise processing and admin fees with our payment provider, we will be taking payments on a 3-month advance basis, or annual sub in advance which helps reduce costs and allows us to keep our subscription prices lower.

This means you will be billed £17.99 for 3 months at the full price, or £15.99 for 3 months if you qualify for the discounted rate. Equivalent pricing in USD will be available for anyone outside the UK.

If you choose the annual sub at the best discount, you’ll be paying £54 for 12 months, offering you an effective 25% discount on the regular 3 month subscription.

Can new users try the service out first?

Starting in October 2024, new users will have access to a 14-day free trial—no payment details required. You’ll be able to explore our features and see how Wonder Watt works for you.

If you’re happy with what you experience, you can start a subscription when your trial ends.

Thank you for your support

We can’t express enough gratitude for the encouragement, feedback, and patience you’ve shown us over the past year and a half.

Rest assured, our level of support will remain as strong as ever. The shift to a subscription model allows us to keep delivering top-notch service while continuing to innovate and enhance the Wonder Watt experience.

We’re excited for this next chapter, and we hope you’ll join us as we continue to evolve. Thank you for being part of the Wonder Watt community — it’s been a remarkable journey, and there’s so much more ahead.

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If you’re curious about the effectiveness of Wonder Watt, the feedback from various online platforms may offer some insights.

Wonder Watt users across different social media, Facebook groups, and forums have been discussing their experiences.

They report improved and smart management of their solar PV and battery system (GivEnergy or Growatt), cost savings and responsive support.

Don’t take our word for it, check out their various reviews and testimonials below.

These testimonials have been directly taken from Facebook groups including Agile Octopus, Growatt, Growatt UK as well as our own Community forums and GivEnergy forums.

“Just completed my first month on Agile and have to say I’m pretty impressed - spent 60% less compared with roughly the same energy as last month on economy 7. Definitely been helped by the easy to use agile automation through Wonder Watt to charge my battery in the cheap slots.” - Richard W.

“Used last night for the first time and worked like a charm. Thanks so much for designing and building this 🤩” - James B.

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On the back of our work on Agile Octopus integration, our next development is focusing on integration of smart plugs that can automatically take advantage of Agile Octopus’ low tariff prices that can vary each 30-min slot.

As this effort gets underway, we are keen to gauge people’s interest in Agile Octopus combined with smart plugs and dynamic schedules, and have created a Google form waiting list for anyone who would like to get an invite when we launch this.

Invites will become available on a first-come, first-serve basis.

Please follow the link below to the Google form, register your interest and be the first to try this out when we launch!

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