Your Fogstar Battery can earn £10+ a month by joining Axle Energy’s VPP

Home batteries like Fogstar’s 16.1kWh Solar Battery are quickly becoming a staple in UK homes. Originally built to store solar energy and cut electricity bills, they’re now doing much more.

Today, battery systems can actively support the grid, help balance renewable energy, and even earn you money.

That’s where Virtual Power Plants (VPP’s) come in.

Platforms like Axle Energy connect thousands of home energy systems and coordinate them to support the grid when it needs it most.

In this blog, we’ll break down how it all works and how connecting your battery to Axle Energy can unlock even more value from your system.

Sign up using our referral code and you’ll also get a £25 welcome bonus.

⚡ What Is a Virtual Power Plant?

A Virtual Power Plant (VPP) links thousands of home energy devices. Think batteries, EV chargers, and heat pumps. It then coordinates them like one big power station.

Instead of firing up fossil fuel plants when demand spikes, the grid can tap into these connected devices.

Axle Energy is the UK’s largest independent aggregator, connecting to hundreds of thousands of these devices to help stabilise the grid. Supporting the grid with batteries can occur in numerous ways. 

For example:

• When demand on the grid spikes, batteries can export energy back to the grid
• When there is excess renewable generation, batteries can store surplus energy
• When local networks become congested, energy use can be shifted to a better time.

🔌 Why the Grid Needs Flexibility

Electricity grids have to balance supply and demand in real time. 

Traditionally, that meant switching fossil fuel plants on and off to keep things stable. But as more wind and solar come online, supply becomes less predictable.

That’s why flexibility is now one of the most valuable tools in the energy system.
And it turns out, homes are full of it;

• EVs are plugged in far longer than they actually need to charge
• Batteries can store energy and release it when it’s needed most
• Heat pumps and other devices can shift when they use power

When these devices are connected and coordinated, they create a smarter, more flexible grid. Exactly what’s needed for a renewable future.

💡 How the Axle Energy VPP Works

Connecting a compatible home battery to Axle’s Virtual Power Plant is straightforward.

Once connected, Axle’s platform can automatically respond to grid conditions.

The process looks like this:

1. Connect your battery
   

• Compatible systems can be linked via existing integrations

• If your inverter is not yet eligible, you can let Axle Energy know by requesting your brand on their landing page.
  

2. Axle monitors grid conditions
   

• When the grid is under stress, Axle is notified.
  

3. Your battery helps during grid events
   

• Short dispatch events allow energy to be exported to support the grid.
  

4. You get paid
   

• Participants are paid for the electricity they provide during these events.

Typical grid support events occur only occasionally - often a handful of times each month.

For example, the Axle Energy VPP programme pays £1 per kWh exported during grid events, with minimum monthly earnings of £10 per month. 

🏠 The Benefits for Home Battery Owners

Joining a Virtual Power Plant can improve the economics of a home energy system.

🪙 Turn your battery into a monthly earner

Your Fogstar battery already saves you money. Now it can make you money too.

By connecting your system to Axle Energy’s Virtual Power Plant, you could earn £10+ a month. With zero effort once it’s set up.

Even better, sign up with our referral code and you’ll get a £25 welcome bonus.

🔃 Fully automated

Once connected, the system operates automatically in the background with no manual intervention required.

✅ Works with your existing supplier

Participation usually sits on top of your current energy tariff, there is no need to change electricity provider.

🌳 Supports renewable energy

By shifting energy use and dispatching stored power when needed, Virtual Power Plants help integrate more renewable energy onto the grid.

Final thoughts

Virtual Power Plants are turning home batteries into something far more powerful than just a way to store energy.

By connecting your Fogstar battery to Axle Energy, you’re not only reducing your bills. You’re actively supporting the grid, helping renewables scale, and earning extra income at the same time.

It’s simple to set up, runs automatically, and works alongside your existing energy tariff.

In short. Your battery works harder, your system becomes more valuable, and you get paid for it.

➡️ Sign-up to Axel Energy here.