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Joulen

Unlock new revenue with energy market trading.

Joulen gives aggregators, HEMS and EMS providers direct access to energy markets, combining accredited VLP and VTP capabilities with the trading infrastructure and expertise needed to optimise and monetise flexible energy.

You bring the flexibility. We provide the route to market.

Trade
Works with the hardware you already run
  • Fox ESS
  • SolaX Power
  • Solis
  • Solplanet
  • Zervio
  • Growatt
  • Sigenergy

Access the markets. Trade flexibility. Capture value

Flexible energy creates opportunities across wholesale, balancing and ancillary markets. But accessing those opportunities requires more than a portfolio of assets. You need market access, trading infrastructure, specialist expertise and the ability to respond quickly as market conditions change.

Joulen brings these capabilities together. Our VLP and VTP accreditation provides the route into energy markets, while our optimisation technology, algorithmic bidding and experienced trade desk work together to identify and capture opportunities for your portfolio.

Who is Joulen Trade for?

Your route to market

  • VLP & VTP accreditation

    Joulen is an accredited Virtual Lead Party (VLP) and Virtual Trading Party (VTP). You access Joulen's market infrastructure rather than developing your own route to market.

  • Market access

    Connect your portfolio to relevant wholesale, balancing and ancillary markets through Joulen's established infrastructure.

  • Trading

    Our expert trading desk manages market participation and execution, supported by algorithmic bidding designed to respond rapidly to changing market conditions.

  • Risk & compliance

    Benefit from Joulen's established processes, market expertise and regulatory capability.

  • Settlement

    We manage the processes required to reconcile trading activity and settle market revenues.

How Joulen Trade works

  1. Connect

    Connect your flexible energy portfolio to Joulen's trading infrastructure.

  2. Optimise

    We assess market conditions, prices, asset availability, operational constraints and existing commitments to identify the best available opportunities.

  3. Bid

    Algorithmic bidding responds rapidly to market conditions across eligible markets.

  4. Execute & settle

    Our experienced trade desk provides oversight and execution expertise, and we manage the settlement of market revenues.

One route. Multiple markets.

Joulen continuously assesses available opportunities across wholesale, balancing and ancillary markets, directing flexible energy towards the best available opportunity.

  • Wholesale

    Capture opportunities from movements in energy prices by buying, selling and positioning flexible assets when market conditions create value.

  • Balancing

    Participate in balancing markets and respond to the changing requirements of the electricity system.

  • Ancillary

    Unlock additional revenue by providing flexibility and supporting grid stability through ancillary service markets.

  • Stacked revenues

    Our optimisation approach considers multiple market opportunities to determine the best combination for your assets and portfolio.

Why Joulen Trade?

  • An established route to market

    Joulen's VLP and VTP accreditation provides an established route into GB energy markets.

  • No trading operation to build

    Access the market infrastructure, technology and expertise required to trade flexible energy without building the capability yourself.

  • Technology and expertise together

    Combine algorithmic bidding and optimisation with experienced trade desk oversight and commercial judgement.

  • Multiple routes to value

    Access eligible wholesale, balancing and ancillary markets and identify the opportunities that best suit your portfolio.

  • Built for growing portfolios

    Connect and trade increasing volumes of flexible energy through an established trading capability designed to scale with your portfolio.

  • Market insight that compounds

    Our growing portfolio gives us increasing market insight, trading experience and scale, helping us continually improve how we capture value.

Performance that compounds.

+31%Revenue vs passive benchmark
3Markets actively traded
24/7Desk + algorithmic coverage
<1sDecision-to-dispatch latency

Trade, Flex or Grid?

Different assets and business models need different routes to market. Joulen's solutions are designed around where you are in the flexibility value chain.

Trade, Flex or Grid?
FeatureFlexComplete flexibility as a serviceTradeMarket access & tradingGridOptimisation of grid-scale assets
ForInstallers, energy companies & OEMsAggregators, HEMS & EMS providersGrid-scale asset owners & developers
Typical assetsResidential & commercial batteriesAggregated flexible portfoliosLarge-scale batteries & co-located portfolios
OptimisationYesYesYes
Market accessYesYesYes
TradingYesYesYes
VLP / VTP route to marketNoYesNo
Algorithmic biddingYesYesYes
Trade desk executionYesYesYes
Best suited toAdding flexibility to your customer propositionBringing aggregated flexibility to marketOptimising larger-scale assets
Explore FlexExplore TradeExplore Grid
FAQs

Trading FAQs

Wholesale (day-ahead and intraday), balancing and capacity plus ancillary services and flexibility markets, every MWh placed where it earns most.

Yes. Joulen holds Virtual Trading Party (VTP) accreditation and the registrations needed to participate in wholesale and balancing markets.

A transparent portal shows revenue by market, benchmark comparison and the rationale behind trades, with exportable data for your own reporting.

Optimise to maximise

Ready to bring your flexibility to market?

Access Joulen's VLP and VTP trading capability and explore what your portfolio could achieve across GB energy markets.