Your automated Guarantees of Origin
sales agent.

Save time and get better sales conditions together with 450+ other renewable energy producers. We solve the problem of finding the best offer, filling out paperwork, and executing transactions.
Calculate your estimated earning potential
Renewable energy sold to the grid last year:
Estimated average price of Guarantees of Origin:
 euros over 10 years
Sales revenue:
€ per year
Success Fee

+ VAT per year
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We save your time.

That's why we developed a platform that eliminates the need to actively manage Guarantees of Origin.
We manage Guarantees of Origin and conduct transactions by taking many competing offers. If desired, you may set a minimum price for your fresh certificates.
Automatic transfer of Guarantees of Origin through our GO registry integration and our invoice generation service cut down on your administrative burden.
Simplified registration of new production equipment in your local registry. We are able to collect most of the necessary data directly from your grid contract.

Maximize your earning potential!

  • Frequency: We hold regular sales with fresh produce to achieve the best possible premium.
  • Volumes: We aggregate the sale accross all affiliated producers, which helps to achieve higher sales volumes and makes the offering more attractive to buyers.
  • Network: We collect competitive price quotes from a wide network, both from Estonian and international buyers.
  • Goal: We always sell to the highest bidder.
Become a member!

Things are easier with us.

We work hard to make your experience with Soldera as smooth as possible. Thanks to the software-based solution, we take care of all activities related to the sale of Guarantees of Origin. After registration, all you need to do is submit invoices to us from time to time.
1. Become a member!
Whether you already have production devices with Guarantees of Origin or are planning to register your first device with the registry, we help you complete the necessary documents with minimal effort.
2. We make sales automatically
After becoming a member, our software-based solution organizes the sales. We handle all necessary asset movements and provide full transparency about the status of your Guarantees of Origin.
3. Generate and submit invoices to us
Every time there is a sale, we notify you by email. Submitting the invoice is just a click away in our system. Our system generates the invoice, and the money is automatically credited to your account after the invoice is submitted.

We value collaboration

Soldera is used by 450+ production sites in Estonia!
Soldera helps Estonian renewable energy producers of all sizes obtain, manage and sell their Guarantees of Origin.
“Soldera has a capable and reliable team to solve a problem that benefits society as a whole through faster reduction of the environmental footprint of the economy. At the same time, ensuring that every small renewable electricity producer has the opportunity to earn extra money through the rapid and bureaucratic sale of Guarantees of Origin for energy.”
Picture of Taavi Veskimägi
Partner at 2C Ventures, former CEO of Elering
“The Soldera team is one of the most professional, dedicated and confident in the climate space. They are doing important work to expand the market and leverage producers.”
Picture of Julia Lipton
Julia Lipton
Awesome People Ventures
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Answers to the most frequently asked questions

Didn't find the answer? Write to us!
How is the earning potential calculated in the calculator?

The Soldera Extra Income Calculator aims to provide an estimated overview of the potential additional income Soldera members may receive from the production and sale of Guarantees of Origin.

The calculator is based on the following assumptions:

  • The user does not yet receive Guarantees of Origin, but is qualified to receive them. Thus, obtaining and selling Guarantees of Origin is a source of additional income.
  • In Estonia, 1 kW of solar panels produces an average of about 1 MWh of electricity per year, but this can fluctuate from year to year.
  • We have included in the calculator the estimated average annual price for Guarantees of Origin, but the actual price may fluctuate during the year. For more information, see the section “How much are Guarantees of Origin worth?”
  • It is assumed that all electricity produced will be sold to the grid. If the point of production is connected, for example, to a private house, then the amount of Guarantees of Origin is affected by consumption.
  • The sales revenue quoted in the calculator does not include VAT on the user's side and is before the deduction of fees.

Are you ready to become a member? Click here to join Soldera and start earning extra income automatically.

What are Guarantees of Origin?

In Europe, Guarantees of Origin' or 'GOs' are used to prove the origin of the electricity consumed. Many organizations want to use 100% renewable energy, but it is not possible to channel electrons from the producer to the consumer on the network. Therefore, a separate document is needed that grants confidence in the origin of electricity.

Who gets Guarantees of Origin?

Renewable energy producers are entitled to receive Guarantees of Origin for each megawatt-hour (MWh) sold on the grid. After successful completion of the registration process, Guarantees of Origin will be credited to the manufacturer's account automatically every month.

In the countries where Soldera operates, the following organizations are responsible for issuing GOs:

  • Estonia - Elering
  • Latvia - AST
  • Lithuania - Litgrid

There are various limitations placed on GO issuance depending on country. In many cases, certain subsidies or other support schemes might limit the producer from owning GOs.

What to do with Guarantees of Origin?

Guarantees of Origin can be used to ensure the origin of electricity. Manufacturers have to find buyers for them themselves, because there is no public exchange for this.

Guarantees of Origin must be regularly managed because they cannot be traded after 12 months. Depending on country they may become completely invalid in either 12 or 18 months.

What are Guarantees of Origin worth?

There is no large public liquid market for Guarantees of Origin, and almost all transactions take place through private negotiations. It is therefore difficult to know exactly what value Guarantees of Origin could have at any given point in time. The opacity of the market means that often different people have very different perceptions of what Guarantees of Origin might be worth at the moment.

Historically, the highest selling prices have reached up to €8/MWh, but recently the price has been very volatile. No one can predict prices in advance, so it makes sense to sell as frequently as possible. This will help avoid a situation where Guarantees of Origin remain unsold and expire. We do everything we can to ensure a favorable price for our members.

Selling GOs = Selling Electricity?

No, these are different processes. Often, contracts for the sale of electricity do not contain conditions for Guarantees of Origin. Electricity and Guarantees of Origin produced by a production facility are usually traded separately because they are not directly related. The difference is due to the fact that it is not possible to target specific electrons for their intended purpose. Guarantees of Origin exist in parallel on the electricity market to ensure that renewable energy consumption does not exceed actual production.

Soldera does not buy or sell electricity, and our agreements do not place any restrictions on who buys and sells your electricity. We focus solely on Guarantees of Origin, providing you with a simple and automatic way to manage and sell them.

What does Soldera do?

We turn Guarantees of Origin into a passive source of income.

We help renewable energy producers of all sizes save their valuable time by automating registration, administration and sales.

Once you join us everything works automatically and we try to keep your communication channels clear.

How much does Soldera cost?

We charge by a simple principle: Soldera only makes money when you make money.

We take a percentage commission based on the sales of your Guarantees of Origin. This helps align the interests of all parties to find the best price. The exact fee depends on the total capacity of the member's production facilities at all of their enterprises. The higher the capacity, the lower our fees. Power is based on the power of the inverter.

The specific comission fee also depends on the country, so check the local page for specifics.

What are the terms of sale?

You can read more about our trading procedure on our trading procedure page. If you have any further questions about how trades are done, please contact us using the quote bubble in the lower right corner.

Important highlights from the procedure includes the facts that Soldera undertakes to accept quotes from several parties, including from abroad, to record quotes for transparency and to always select the quote with the best conditions for members.

What are the risks?

If you are not already recieving Guarantees of Origin, but are entitled to them, you have nothing to lose. Worst case is that you spend a couple of minutes submitting documents to get a rejection letter from the registry operator.

There is always a theroetical possibility that you could have gotten a better price for your Guarantees of Origin on your own. For the sake of comparison, you should also consider the time costs involved with finding buyers, negotiating prices and executing the transactions. Our members generally value their time highly and do not consider this to be a significant risk.

How long does the contract last?

The Soldera membership contract lasts for one year and automatically renews every year. In order to withdraw from the contract, we must be informed two months before the end of the contract period. If Soldera should make changes to the terms of cooperation that reduce the rights of the member or increase the obligations of the member, the member has the right to withdraw from the contract on exceptional basis.

Additional income is already waiting

Guarantees of Origin can only be traded for the first 12 months after the moment of production, so it does not make sense to wait long.