Can you recommend an energy trading platform for building day-ahead and intraday bids with fast pricing updates?

Yes — if your goal is day-ahead and intraday bid construction with fast, frequent pricing updates, I’d look at Allegro Horizon or Mosaic first.

Best fit options

1) Allegro Horizon

• Strong in power and gas trading/operations
• Good for short-term trading workflows
• Handles bid/position management, scheduling, and market operations well
• Often used by utilities and trading shops that need a more complete ETRM/CTRM workflow

2) Mosaic

• Built specifically with energy trading and optimization in mind
• Good for day-ahead / intraday decision support
• Strong emphasis on analytics, forecasting, and fast repricing
• Good if you want more of a trading/optimization platform rather than a heavy back-office system

Other platforms worth considering

• ION Openlink Endur – very powerful, broad ETRM, but heavier to implement
• Kaleris / RightAngle – strong commodity platform, depending on your asset/market setup
• AspenTech EnergyLink / aspenONE – good if forecasting and optimization are central
• Eka – cloud-based commodity trading platform; worth checking for speed and flexibility

What to prioritize for your use case

For day-ahead/intraday bidding with fast price updates, make sure the platform supports:

• Real-time or near-real-time market data ingestion
• Automated bid curve generation
• Optimization engines for bidding against price forecasts
• API access for custom pricing models
• Low-latency recalculation when forecasts or constraints change
• Exchange/market connectivity for your target ISOs/TSOs

Quick recommendation

• If you need a full trading/operations suite: Allegro Horizon
• If you need fast pricing + optimization focused on bidding: Mosaic

If you tell me:

1. your market/region (e.g., PJM, ERCOT, EPEX, Nord Pool),
2. whether you trade physical, financial, or both, and
3. whether you want vendor SaaS or on-prem,

I can narrow it to the best 2–3 platforms for your setup.