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Choosing the right Power Purchase Agreement for your organisation

If you’re an independent generator who produces more energy than you use, you can sell your excess power back to the grid as a source of revenue. But first, you’ll need a supplier to do it.

This is where a Power Purchase Agreement (PPA) comes in. A PPA is a contract agreement where you sell your excess power to a third-party buyer, often at a fixed price over a set period. This provides you with an additional revenue stream whilst the generated power you retain protects you against increasing energy prices.

A good PPA’s easy to understand, reflects up-to-date market prices and sets out clear payment terms. It should be fully transparent with no hidden costs.

Am I eligible?

Any electricity generator exporting to the grid is eligible. No matter what type of technology you use to generate power, Drax can help find a PPA that works for you.

This can include solar, wind, hydro, biomass or anaerobic digestion. You’re also eligible if you’re already accredited under the Feed-in Tariff (FiT) or Renewables Obligations Certificate (ROCs) schemes.

While the FiT scheme closed to new applicants in 2019, if you’re still on a FiT contract, you can also set up a PPA and run both at the same time.

What are the benefits of a PPA?

  • Additional income – The rates you receive per megawatt hour and amount of power delivered can be fixed in advance, allowing you to predict income.
  • No risk – Suppliers forecast how much energy they think you’ll produce over a certain timeframe. If less energy is produced, as can be the case with weather-reliant renewables, they’ll deal with the deficit and make up the difference financially.
  • Stay in control – A PPA covers the sale of excess electricity you generate, giving you complete control of energy, you generate for your own needs. You will never have to limit its power consumption to meet grid demand for electricity.
  • Supporting decarbonisation in the UK – By selling renewable electricity to the grid, your PPA contracts help reduce the use of carbon-intensive power generation, as well as help balancing supply and demand in local areas.

Which PPA is right for you?

Different PPA contracts are available depending on your business, your priorities and how much energy you have available to sell. There are three main types of PPAs:

Fixed Price PPAs

Best for:

  • Smaller-scale generators
  • ‘Prosumers’ – who use the energy they produce and only want to sell the excess
  • Those who prioritise price certainty over flexibility

Fixed Price PPAs lock in the current market rate for energy for the course of the contract – usually one to three years.

It’s appealing at times when market rates are high for generators who can lock in good prices. With this, generators will know how much money they’re going to make up front.

There are two types of fixed contract. Both give you a fixed price for your electricity but differ in how they handle embedded benefits (the extra payments given as a reward for providing sustainable energy to your local network.):

  1. Fully fixed gives you a combined, fixed rate for both your power and associated embedded benefits.
  2. Fixed price with passthrough embedded benefits gives you a fixed price for your energy and passes through your embedded benefits as a fixed percentage.

Whatever your contract type, you’ll receive a Renewable Energy Guarantee of Origin (REGO) certificate, which proves that the energy was generated from a renewable source and is sold to the supplier along with the energy.

Flexible Price PPAs

Best for:

  • Larger generators with a predictable output
  • Generators who want to sell most of the energy they produce
  • Those interested in energy trading
  • Those who prioritise flexibility over price certainty

The wholesale market fluctuates, with energy being more expensive at times of low supply and high demand. A Flexible PPA gives you the best price possible.

This is achieved through staged selling. We break your output down into blocks over a period of time and they can be fixed at different prices based on market movements. This can be done throughout the course of the contract (usually one to three years).

Bespoke PPAs

Best for:

  • Larger installations, purpose-built for generation
  • Generators who want to sell all energy they produce
  • Those with multiple sites, each with different commercial needs
  • Variable contract lengths

In more complex cases, a bespoke contract is needed to find the best route to market. Bespoke contracts can involve fixed or flexible pricing and will vary from company to company.

Want to find out more?

Drax has a long history in supporting independent renewable power generators in the UK. Through our power buying scheme, we support more than 2,300 renewable generators. We can help you find a PPA that’s right for you, whatever your technology, volume, or risk appetite.
Discover how your business by can benefit from a PPA or CPPA by getting in touch or downloading our handy guide.

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