Energy demand and renewable generation potential

The Energy Resource and Demand Forecast generates indices that provide valuable insights into energy generation and demand predictions using three key weather-based indices: the Solar Index, Wind Index, and Heat Index. The first two give an indication of generation capacity in a given geographical area for up to 16 days ahead. The last provides an indication of energy demand based on the likely heating and cooling requirements.

The data is provided in colour coded tabular format as well as in graph format. The intention is to provide a simple "at a glance" dashboard. The indices are fully updated twice daily to use the latest forecast data.

Energy demand

The Heat Index reflects the likely demand for heating or cooling based on temperature extremes. It considers both low temperatures (which increase demand for heating) and high temperatures (which drive demand for air conditioning). The index is higher when temperatures are at extremes, indicating greater energy demand, and lower when temperatures are mild and comfortable.

Solar and wind power generation potential

The solar index calculates how good the conditions are for solar power generation by considering both cloud cover and the sun's position in the sky. Instead of treating all daylight hours equally, it recognizes that solar panels produce more power when the sun is high in the sky (around noon) and less power during early morning or late evening hours, even if the sky is equally clear. This is achieved by applying a multiplier that peaks at solar noon (halfway between sunrise and sunset) and gradually decreases as you move towards sunrise or sunset, similar to how the sun's intensity naturally varies throughout the day.

The Wind Index measures the suitability of wind conditions for energy generation. It is based on wind speed, with moderate to strong winds contributing positively to wind power generation. However, extremely high wind speeds may not always be beneficial, as some wind turbines shut down in storm conditions. The index provides an averaged value for a given area over a specific forecast period.

Global access available

The 72 hour indices are made freely available for the UK. However, indexes can be generated on demand for anywhere on the Earth for up to 16 days ahead.

Discuss your requirements

If you would like full access to the dashboard or want to discuss your requirements please Contact Us. The indices are very flexible and it is possible to provide bespoke presets.

News and information

RECENT WEATHER NEWS