Energy Toolbase

Key Takeaways

• Energy Toolbase = commercial solar + storage economic modeling.
• Hourly TOU rate analysis + NEM 3.0 / NBT integration.
• Battery dispatch optimization against customer load profile.
• Industry-standard for California commercial solar + storage.
• Subscription pricing.

What Energy Toolbase Actually Models

Energy Toolbase sits downstream of the physical system design. It takes the array’s expected production, the site’s interval consumption data, and the applicable utility tariff, then runs an hour-by-hour simulation rather than a monthly or annual estimate. That distinction matters for commercial and industrial accounts, which are almost always billed on time-of-use (TOU) rates with separate demand charges — a project that looks marginal on an annual-kWh basis can pencil out very differently once the software matches solar production hours against the customer’s peak-rate and peak-demand windows.

The same hourly engine is what drives its battery dispatch logic. Rather than assuming a fixed charge/discharge schedule, Energy Toolbase optimizes when a battery should charge from solar, charge from the grid, or discharge to shave demand charges and shift load out of the highest-priced TOU periods — then reports the combined solar-plus-storage bill impact. For California projects this is layered with NEM 3.0 / net billing tariff (NBT) rules, since export compensation under NBT is itself time-varying and the CPUC’s Avoided Cost Calculator has to be applied hour by hour to get a defensible number.

Where It Fits in a Commercial Solar Workflow

A typical commercial workflow keeps Energy Toolbase and a design/layout tool in separate roles: production estimates and shading come from a modeling package such as PVsyst or a CAD-based layout, and that output is then imported into Energy Toolbase alongside the customer’s rate schedule and interval consumption data to generate the savings and payback analysis a commercial customer or lender will actually evaluate. Because the tool is proposal- and finance-facing rather than engineering-facing, it’s rarely used on its own — it’s paired with whatever platform produced the underlying yield and system-size numbers.

Related Reading

Because Energy Toolbase only models the financial side of a project, the production estimate it consumes has to be trustworthy in the first place — our guide on accurate yield predictions from PVsyst covers why bankable production numbers matter before any TOU or NEM 3.0 savings analysis is run. For teams comparing the broader software stack a commercial EPC needs — design, proposal, and financial modeling together — the ranked overview of solar design platforms is a useful starting point, and readers weighing Aurora Solar specifically against alternatives may find the Aurora vs HelioScope comparison relevant since both tools are commonly paired with Energy Toolbase in commercial workflows. For commercial and industrial projects where the solar-plus-storage economics modeled here need to translate into an actual buildable design, Heaven Designs’ commercial solar engineering work shows how that handoff plays out on real projects.