Choosing Energy Management Software for Ohio Sites
The short answer
In this guide, an energy management system (EMS) means the software layer that collects utility, meter and building data, normalizes it for weather and occupancy, and tells you where money is leaking. It's distinct from the controls that switch equipment on and off, though many products do both. Choose a platform that pulls in your utility's 15-minute interval data and supplier invoices automatically, accepts submeter and building-automation feeds over open protocols, flags anomalies, tracks demand and capacity tags, and exports to ENERGY STAR Portfolio Manager. Then use it on a weekly routine — the software doesn't save anything on its own.
For the controls that act on equipment, see smart building controls. For multi-site portfolio reporting, see energy analytics for portfolios; for common setup errors, see energy monitoring mistakes; and for proving savings, see savings verification.
What the software layer does
| Layer | What it handles | Examples |
|---|---|---|
| Data | Collects and cleans data | Utility interval data, utility and supplier bills, submeters, BAS trend logs, weather |
| Analytics | Turns data into findings | Baselines, weather normalization, anomaly detection, fault detection, load profiles |
| Action | Gets findings to someone who can act | Alerts, work orders, peak-day notices, control setpoint recommendations |
| Reporting | Documents results | Savings reports, budget variance, benchmarking, emissions reporting |
A platform strong in one layer and weak in another is common. Decide which layers you need before comparing vendors.
Data sources and submetering
Utility interval data. If your account has a smart or interval meter, the utility records usage in short intervals, typically 15 minutes. This is the foundation — it shows baseload, peaks, schedules and peak-day behavior for the whole account. See Ohio energy data analytics for how to get it.
Bills. The utility bill (delivery, riders, excise tax) and, if you shop, the supplier invoice (generation). Loading both lets the platform check each against your rate schedule and contract.
Submeters. Add them where one load is large enough to matter and you need to see it separately — chillers, air compressors, kitchen lines, refrigeration racks, EV chargers, tenant spaces. Monitoring-grade meters are fine for finding waste; use revenue-grade metering if you'll bill tenants from it.
Building automation trends. Setpoints, run status and damper positions from the BAS, usually over BACnet, explain why a meter reading changed.
Capacity tag and transmission tag values. Ask your supplier or utility for them each year so the platform can track how summer peak-hour behavior changes your costs.
Selection criteria
| Criterion | Why it matters | Question to ask the vendor |
|---|---|---|
| Automatic utility data | Manual uploads stop happening | Can you pull my AEP Ohio, Duke, AES Ohio or FirstEnergy interval data automatically, and how often? |
| Supplier invoice handling | Generation is often the largest charge | Can you load my supplier invoices and check them against my contract price? |
| Hardware-agnostic | Avoids lock-in | Which meters and controllers do you support? BACnet, Modbus? |
| Weather normalization | Separates weather from performance | How do you build baselines, and can I see the model? |
| Bill validation | Catches billing errors | Do you check rate schedule, demand, riders and taxes? |
| Demand and capacity tracking | Demand and capacity are a large share of cost | Do you forecast PJM peak days and track capacity tags? |
| Reporting | Customers and lenders ask for it | Do you export to ENERGY STAR Portfolio Manager? |
| Data ownership | You may switch platforms | Can I export all raw data in a standard format? |
| Cybersecurity | Connected meters and BAS are network endpoints | How is data encrypted, and how is remote access controlled? |
On taxes: Ohio doesn't charge sales tax on electricity; bills carry a per-kWh excise tax instead, tiered by monthly usage. A bill-validation module should flag any sales tax on an electricity charge as an error.
Pricing. Platforms are usually sold as a subscription per meter, per site or per data point, plus any hardware and setup. Compare total cost over three years, including submeter installation, against the savings you can realistically act on.
A working routine
Software without a routine becomes a dashboard nobody opens. A practical cadence:
- Weekly (15 minutes). Review exceptions: after-hours load above normal, new baseload, the week's peak interval and what caused it.
- Monthly. Validate the utility and supplier bills; compare peak kW with last year; log projects completed.
- June–September. Watch peak-day forecasts and confirm the building responded on alert days. See capacity tags explained.
- Each June 1. Record the new capacity tag and the new default price; check both against expectations.
- Annually. Weather-normalized year-over-year comparison, savings report, and a data package for your next supply contract.
Measurement and verification
When you need to prove a project's savings — to finance, a lender, an energy-as-a-service provider or a customer — use the International Performance Measurement and Verification Protocol (IPMVP) from the Efficiency Valuation Organization. Its options:
| IPMVP option | Approach | Good fit |
|---|---|---|
| A — Retrofit isolation, key parameter | Measure the key variable (such as fixture wattage), estimate the rest | Lighting retrofits |
| B — Retrofit isolation, all parameters | Meter the affected equipment | VFDs, chiller replacements |
| C — Whole facility | Compare whole-building meter data against a weather-adjusted baseline | Multiple measures with interactive effects |
| D — Calibrated simulation | Use a calibrated energy model | New construction, major renovations |
An EMS with interval data and weather normalization makes Option C practical for most buildings. Savings claims for Ohio utility rebates are no longer a reason to do this — those programs ended — but internal capital decisions still depend on it.
Rolling out across multiple sites
- Pilot one representative site — or your highest-cost one — for three to six months.
- Set two or three KPIs, such as weather-normalized kWh per square foot, after-hours load and summer peak-hour kW.
- Standardize schedules, alarm thresholds and naming before adding sites.
- Assign an owner at each site who receives alerts and has authority to act.
FAQ
What's the difference between an energy management system and a building automation system?
A building automation system controls equipment. Energy management software collects and analyzes meter, bill and building data to find waste and verify savings. Some products combine both, but they're separate jobs.
Do I need submeters?
Not always. Utility interval data is enough to find schedule problems and peaks. Add submeters where a single large load needs to be seen separately, or where you bill tenants.
How much does energy management software cost?
Pricing is usually a subscription per meter, site or data point, plus hardware and setup. Compare three-year total cost with the savings you can realistically act on.
Can energy management software verify savings?
Yes. With interval data and weather normalization, it can support IPMVP Option C whole-facility savings verification.
Sources
- Efficiency Valuation Organization, IPMVP: https://evo-world.org/en/products-services-mainmenu-en/protocols/ipmvp
- Ohio Revised Code 5739.02 (sales tax exemptions, including electricity): https://codes.ohio.gov/ohio-revised-code/section-5739.02
- ENERGY STAR Portfolio Manager: https://www.energystar.gov/buildings/benchmark