Solar energy trading & aggregation

Refine market strategies and manage risk

Solar power trading demands precision. As variable renewable energy production increasingly drives electricity markets, industry participants — from distribution network operators to asset-led aggregators — need real-time, probabilistic forecasting technologies to follow market dynamics and stay competitive. CalibSun’s smart services are built for this field and these purposes: resource-based, accurate energy production forecasts designed to refine market strategies, manage risk, and maximize the financial benefits of solar energy assets.

Forecasts to optimize market financial strategies

Market strategy

Forecasts to optimize market strategies and operations

Forecasts help traders and energy aggregators to optimize their strategies and resources.

The ability to anticipate with fine temporal granularity enables us to formulate strategies adapted to market fluctuations. By anticipating fluctuations in weather conditions, we can optimize energy management and financial flows to maximize profits from solar power plants.

Supply / demand arbitrage

Optimize energy supply/demand management

As the share of photovoltaics in the energy mix increases, aggregators from many countries need to anticipate supply and demand in the energy market to maintain grid balance.

Site-by-site forecasting, or via a virtual power plant for portfolio management, enables solar energy to be optimally integrated into the grid, ensuring a balance between energy supply and demand. Aggregators, responsible for the balancing parameter, can rely on the power of NEXT to implement strategies to guarantee grid stability while maximizing the integration of solar power generation into the energy mix, thanks to high forecast accuracy.

Increase in profits

Maximize profits from the sale of solar energy

NEXT, the probabilistic forecasting service, offers relevant production scenarios to maximize the profitability of buying or selling solar energy.

Accurately anticipating the amount of energy produced by a portfolio of photovoltaic plants allows for maximizing profits. Forecasts that provide a probabilistic view of future production, showing the range of possible power output and the associated trading risks, help navigate market volatility. By leveraging this data, traders and aggregators can fine-tune their buying and selling strategies, taking advantage of market fluctuations for increased financial performance.

Our key elements

Maximizing revenues on short intraday windows: NEXT makes its biggest difference at the shortest forecast horizons, where forecast accuracy directly impacts trading performance.

Short-horizon accuracy

NEXT delivers its strongest performance at the shortest forecast horizons, where precise anticipation of solar power output has the greatest impact on trading decisions.

15-minute intraday windows

For players trading on 15-minute intraday windows, this short-horizon accuracy translates directly into higher trading revenues: the better you anticipate the next quarter-hour, the better you position yourself before prices adjust.

Proven in benchmark

This advantage was confirmed in our latest benchmark in Corsica, where NEXT delivered a measurable +50% accuracy gain in nRMSE at the 15-minute horizon compared to a competitor relying solely on satellite data.

Our related resources

Numerical weather prediction models (NWP): The 131-million data point engine behind your weather forecast

Understanding solar energy potential across all time horizons

Industries: what are the solutions for energy independence?

Storage and PV: what opportunities?

Probabilistic Forecasting Methods for Solar Energy

Solar Data Forecasting Models: Transforming Weather Inputs into Accurate Energy Predictions

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Solar energy trading: Frequently Asked Questions

How does CalibSun help manage the risks of solar energy trading?

CalibSun directly addresses the core risk in solar energy trading: production uncertainty. Through its probabilistic solar power forecasting service NEXT and nowcasting from 1-minute resolution with INSTANT, CalibSun gives traders and aggregators a precise, real-time view of expected solar energy production across their entire portfolio. By accounting for cloud cover dynamics, this level of accuracy enables companies to reduce imbalance costs, optimize sales strategies on spot and forward markets, and navigate the challenges of variable solar energy generation with confidence.

What role does energy storage play in solar trading strategies?

Energy storage — including battery storage solutions — is an increasingly critical component of solar power trading strategies. By storing surplus energy produced during peak sunlight hours and releasing it when electricity demand is highest, aggregators can improve their flexibility, balance power capacity, and capture higher market prices. Integrating storage into portfolio management requires accurate forecasting of both solar production and demand response to maximize profitability and ensure grid stability.

What opportunities does the energy transition create for solar traders and aggregators?

The global energy transition is creating significant growth opportunities for solar energy traders and aggregators. As fossil fuels are progressively replaced by clean energy sources, energy markets are evolving toward greater flexibility, decentralization, and innovation. Companies that invest in smart forecasting platforms and renewable energy trading solutions today will be best positioned to capture the financial benefits of this new era of sustainable energy.

How does short-term solar forecasting help you maximize savings on spot and intraday markets?

On spot and intraday markets, the price you capture for your solar energy production depends directly on how well you anticipate what your assets will produce — and when. Inaccurate forecasts mean either underselling during high-price windows or accumulating imbalance costs that erode your margins.

With NEXT, you get probabilistic production scenarios at fine temporal granularity, giving you the flexibility to time your market positions with precision and mitigate exposure to price volatility.

INSTANT further strengthens your short-term trading decisions with nowcasting from 1-minute resolution, ensuring you can react to rapid changes in solar energy generation before they impact your financial performance.