Written by Harleigh Dickinson
September 26, 2024
How Does A Virtual Power Plant (VPP) Work?
Did you know by 2050, VPPs are projected to supply 30-45% of Australia’s electricity needs. That’s nearly half the country’s energy demand. But why does this matter to you? As Australia moves towards a more sustainable energy future, VPPs will play a central role in stabilising electricity prices, reducing carbon emissions, and ensuring a more reliable energy supply. Whether you’re a homeowner, business owner, or just concerned about rising energy costs, understanding VPPs could shape your energy choices for the better in the years to come.
VPP’s may seem like something out of a Sci-Fi film, but they’re much simpler than that. We have years of experience in battery installation, so let us shed some light(sabre) on this for you.
With renewable energy on the rise, you might have heard about Virtual Power Plants (VPPs). But what are they, and why should you care? Understanding VPPs can help you save money and use energy more efficiently.
In this article you will learn what a VPP is and how they work, how to go about joining, the requirements and common concerns associated with VPP’s.
What is a Virtual Power Plant (VPP)?
A Virtual Power Plant (VPP) is a network of small power sources like solar panels, wind turbines, and batteries. These are connected and managed together to work like one big power plant. The goal is to balance energy supply and demand, making sure everything runs smoothly. By linking these small power sources, a VPP can provide reliable electricity just like a traditional power plant.
How Does a VPP Work?
A Virtual Power Plant (VPP) may sound complex, but it’s quite simple when broken down. It uses smart software and communication systems to connect and manage different energy sources, like your solar panels and battery, as one big network. Here’s how it works:
- Aggregation
First, the VPP pulls together (or “aggregates”) many individual energy sources, such as solar panels, batteries, and sometimes even wind power, into a single network. This combination of energy sources acts like one large, flexible power plant. By doing this, the VPP can manage the energy more effectively, making sure it’s available when and where it’s needed.
Instead of relying on one big power station, we get the power from many smaller sources working together. - Optimisation
Once the energy sources are connected, advanced software takes over to make sure everything runs smoothly. The software constantly monitors the energy being produced and adjusts it to balance supply and demand.
For example, during a hot night when a lot of people are using air conditioning, the VPP can draw extra power from batteries to meet that demand. This smart technology ensures that energy is used efficiently, reducing waste and saving money. - Distribution
Finally, the VPP distributes the energy to where it’s needed most. If the grid needs extra power, the VPP sends energy back to it, helping to prevent blackouts or reduce strain on traditional power plants.
The energy can also go directly to consumers when the demand is high. This flexibility ensures that every bit of power generated is put to good use, whether it’s keeping your lights on or helping out your neighbours.
This smart system not only helps you save money and earn from your energy, but also plays a role in creating a cleaner, more reliable energy grid for everyone.
Benefits of Participating in a VPP
Get Paid For Your Energy
One of the exciting benefits of joining a Virtual Power Plant (VPP) is the potential to earn money by selling your excess energy back to the grid. When your solar panels produce more energy than you need, your battery stores it. Instead of letting that energy sit unused, the VPP can sell it to the grid when demand is high, and you get paid for it! Homeowners on Amber’s VPP have seen the feed-in-tariff go as high as $4/kWh during rare grid events!
The amount you can save annually by using a Virtual Power Plant (VPP) can vary depending on several factors like your energy usage, the size of your solar and battery system, and the specific VPP program you’re part of.
However, here’s a rough estimate to give you an idea:
Annual Savings: Many homeowners in a VPP save anywhere from $300 to $1,000 or more per year.
Extra Income: Some VPPs pay participants for the energy their batteries feed back into the grid. Depending on your system and location, you could earn $100 to $700 or more annually just from selling excess energy.
In total, combining savings on your energy bill and potential earnings from the VPP, you might be looking at $400 to $1,500+ in annual financial benefits.
This, of course, depends on how your VPP is set up, your energy consumption patterns, and how often the VPP uses your stored energy.
Environmental Impact
One of the biggest advantages of joining a Virtual Power Plant (VPP) is its positive effect on the environment. By using more renewable energy, like solar power, VPPs help reduce carbon emissions. This means less pollution and cleaner air for everyone. Instead of relying on traditional power plants that burn fossil fuels, a VPP uses the energy your solar panels generate and shares it with others.
In short, by being part of a VPP, you’re helping to make the world greener and supporting a future with cleaner energy for all.
Grid Stability
VPPs also play an important role in keeping the power grid stable. Power grids need to balance how much energy is being used (demand) with how much is available (supply).
When demand is high, like during heat waves or storms, there’s a greater risk of blackouts and brownouts. But a VPP can help by releasing energy from batteries like yours when it’s needed the most. This helps ensure a steady flow of electricity to everyone, preventing blackouts and brownouts and making sure your home and others always have power.
In other words, VPPs make sure the grid stays reliable and strong.
Do You Need A Battery To Join A VPP?
While solar panels alone can generate renewable energy, a battery is crucial for storing the excess energy that your solar panels produce during the day. This stored energy can then be used by the VPP to either power your home at night or be sold back to the grid when it’s needed most, like during peak demand times. Without a battery, any unused solar energy is typically sent straight to the grid, and you wouldn’t have the flexibility to store and sell energy as part of a VPP.
However, some VPP programs may allow homes with solar panels alone to participate in a more limited way, but the real benefits of a VPP, such as earning money by selling excess energy or helping to stabilise the grid, come from having both solar panels and a battery.
If you’re thinking about joining a VPP, having a battery will help you maximise the financial and energy-saving benefits!
Grid Feed-In vs. VPP Payments
While you can get paid for sending energy back to the grid, the key difference with a Virtual Power Plant (VPP) is how and when that energy is sent and the role a battery plays.
Here’s the breakdown:
- Timing Matters: In a VPP, the goal is to supply energy during high-demand periods when electricity is most valuable (like during heat waves or peak hours). A battery allows you to store excess energy from your solar panels and release it to the grid at these optimal times. Without a battery, your solar panels only send energy to the grid when they’re producing it—usually in the middle of the day when demand is lower and energy is cheaper. This means the energy is worth less, and you won’t earn as much for it.
- Energy Control: VPPs work because they can control when and how much energy your system sends to the grid. A battery gives the VPP the flexibility to manage this flow. Without a battery, there’s no way to control the timing of energy production, which reduces the value of your contribution to the VPP.
- Grid Feed-In vs. VPP Payments: When you send solar energy directly back to the grid without a VPP, you typically receive a feed-in tariff—a fixed payment per kilowatt-hour of energy exported. But these tariffs are usually low because the energy is sold during low-demand times. In contrast, VPPs offer higher payments because the energy is stored in a battery and sold when it’s more valuable to the grid.
In short, while you can still be paid for sending energy to the grid without a battery, the payments are lower. A battery in a VPP allows you to maximise your earnings by sending energy when it’s most needed and valuable!
How to Join a VPP
The first step in joining a VPP is checking to see if your current solar and battery system is eligible to join and you can do this by:
- Check Your Battery Compatibility: Not all batteries can be part of a VPP. Look up your battery model (e.g., Tesla Powerwall, Enphase, etc.) and see if it’s supported by a VPP program in your area. Most VPPs work with specific brands and models.
- Look for a VPP Program in Your Area: Virtual Power Plants are available in different regions, offered by energy retailers or VPP-specific companies. Do a quick search for VPP programs in your area (New South Wales, for example, has a few well-known ones).
- Check Connection Requirements: VPPs need your system to be connected to the grid and have an internet connection to control when and how your battery feeds power back into the grid. Make sure your system meets these conditions.
- Contact Your Installer or Manufacturer: Reach out to the company that installed your system or the battery manufacturer. They can tell you if your setup is ready for a VPP or if any upgrades are needed.
Next you need to select a provider. Research and pick a VPP provider that offers the best benefits for you. Look for those with good customer reviews and strong support.
And lastly, follow the provider’s steps to sign up for the VPP. This usually involves filling out an application and agreeing to their terms.
Addressing Common Concerns About Virtual Power Plants
- Integration Complexity
One of the most common concerns people have is thinking that joining a Virtual Power Plant (VPP) is too complicated. The good news is, it’s actually much simpler than it sounds! Most VPP providers are there to guide you through the process.
They offer clear instructions, step-by-step support, and resources that make it easy for you to get your system connected. You won’t be left figuring it out on your own, there’s help every step of the way. - Costs and Savings
Another worry is about the cost. Yes, there may be some initial expenses, but the long-term savings often make it well worth it. By joining a VPP, you could actually earn money by selling excess energy back to the grid. Plus, many solar companies offer financing plans to help you with any upfront costs of your solar installation.
In the end, the financial benefits outweigh the initial investment, helping you save more over time. - Reliability and Security
Some people worry about how reliable and secure a VPP is. Virtual Power Plants use advanced technology to make sure everything runs smoothly and securely. They have strong protections in place to keep your data safe and ensure that your system operates reliably.
This means you can relax, knowing that your system is both secure and dependable.
Time Is Ticking
Solar technology is advancing quickly, and new rebates, such as the solar battery rebate in NSW, are being introduced to help homeowners save. However, one thing that won’t last forever is the solar STC rebate, which is set to end in 2030 and decreases each year until then.
This makes now the best time to install solar and take advantage of these savings before they’re gone!
Next step is to determine what size solar system you will need