Probabilistic solar forecasts for Ireland — from rooftop to national scale.
SolarCast combines satellite imagery, numerical weather and inverter telemetry to forecast solar generation at site, zone, substation and all-island level — for households, solar farms and grid partners.
- Site, zone, substation and national endpoints
- Irish transmission and DSO zone registry
- K-anonymised coverage map for partner planning
- Self-service developer portal after approval
Solar variability affects households, solar farms and the wider grid. SolarCast gives each audience the forecast granularity they need — from a single inverter site to an all-island aggregate.
For households and installers
- Site-level forecasts when inverters are connected and consented
- Zone context — transmission region, DSO area and substation match with confidence labels
- Integrated into member dashboards, branch views and installer setup flows
- Complements Surpl SkyCast day-ahead and nowcast signals
For business and grid partners
Approved API partners — including solar farm operators, utilities, traders and flexibility providers — can access normalised forecast endpoints with scoped API keys, usage metering and optional webhooks.
- All-island probabilistic solar forecast (MW)
- Transmission zone aggregates by zone ID
- Substation net-load and extended ramp forecasts
- Farm-level forecasts for registered solar sites
- Daily accuracy reporting for model transparency
- Webhook, SFTP or MQTT delivery for operational integrations
Privacy-first zone analytics
Partners planning integrations can explore Irish zone coverage on an anonymised map. Household counts are aggregated with k-anonymity (minimum cohort of five) so individual members are never exposed.
Built on open research foundations
SolarCast builds on PVNet and Open Climate Fix research, fine-tuned for Irish conditions with satellite ingest, NWP blending and optional inverter labels from consented members.
Official grid data where indicated
Official data: Supported by EirGrid Group Data
FAQ
How do I get API access?
Submit a partner application at /developers/apply. Our team reviews use case, data handling and scopes before provisioning a developer portal account.
Can I see exact household locations?
No. Partner coverage maps and analytics use k-anonymised zone aggregates only.
What is the difference between SkyCast and SolarCast?
SkyCast focuses on household guidance and sub-hour cloud motion. SolarCast adds probabilistic forecasting at site, zone, substation and national scale for operational and B2B use.
Forecast solar with confidence at every scale.
Apply for API partner access or join Surpl as a member to see site-level SolarCast on your dashboard.
Irish zone coverage map
AnonymisedFlex flag offK-anonymised household counts by provisional transmission and DSO zone. Groups with fewer than five households are merged to protect privacy — the same view partners see when planning API integrations.
0 located households mapped of 0 total. Registry compiled from public EirGrid and ESB map sources.
SolarCast for solar farms and grid partners
Solar farm operators, utilities, DSO teams and large asset managers can integrate SolarCast forecasts into trading, dispatch and operational workflows after a short application review.
Who it's for
- Utility-scale solar farms and portfolio operators
- ESB Networks and EirGrid-style planning and operations teams
- Renewable traders and forecast service integrators
- Flexibility providers coordinating distributed solar
What approved partners receive
- National, zone, substation and farm-level SolarCast endpoints
- Irish zone registry with transmission and DSO region mapping
- K-anonymised coverage map and cohort analytics in the developer portal
- API keys, billing, usage dashboards and scope management
- Optional webhooks, SFTP and MQTT forecast delivery
- Daily accuracy reporting and model version transparency