Industrial warehouse — solar plus peak shaving
Bloomfield, Connecticut · Industrial / warehouse, single meter · 620 kW-DC rooftop solar + 250 kW / 500 kWh storage
A single-meter distribution building on an Eversource commercial rate with a real demand component. This is the shape of site where solar and storage both pay: steady daytime load, large uninterrupted roof, and enough billed peak for a battery to work against.
Representative photography of this site type. Not a photograph of a customer property.
- Modeled annual benefit
- $196,000
- Energy offset, demand reduction and program payments combined
- Demand charges today
- $67,200 / yr
- 400 kW billed peak at $14/kW-month
- Solar offset
- 62% of usage
- 744,000 kWh/yr modeled production
- Eversource commercial rate with a monthly billed-demand determinant of roughly $14/kW.
- Demand charges account for about a third of the annual bill before any measure is taken.
- Time differential is modest, so the storage case rests on demand reduction and program payments, not energy arbitrage.
- Approximately 88,000 sq ft of flat membrane roof, 11 years old, with remaining service life confirmed by the roofing report.
- Existing 1,200 A service with headroom for a 620 kW-DC array plus a 250 kW inverter block.
- Ground-level pad space beside the loading yard for the storage enclosures and fire setbacks.
- 620 kW-DC rooftop array on ballasted racking, sized to on-site consumption rather than roof capacity.
- 250 kW / 500 kWh storage — roughly 35% of billed peak at a two-hour duration.
- Dispatch tuned to the monthly billed-demand window, with program dispatch events layered on top.
Every line separated, with its own assumption.
| Line | Modeled value | Basis |
|---|---|---|
| Energy offset from solar | $107,000 / yr | 85% self-consumption at a $0.17/kWh blended rate |
| Demand-charge reduction | $35,000 / yr | 250 kW shaved in 10 of 12 months at $14/kW |
| Program performance payments | $81,250 / yr | Modeled at $325/kW-year under Connecticut Energy Storage Solutions, subject to enrollment and current program rules |
Modeled figures only. Not an operating result, not customer data, not a quote. Federal, state and utility incentive availability depends on project facts and applicable requirements; NOI does not provide tax advice.
- Program payment rates and enrollment windows change; the modeled payment is dated to the rules in force when the case is issued.
- Eversource interconnection study timing drives the schedule more than construction does.
- A structural review can reduce usable roof area, which moves the solar figure down.
- 01 Tariff read
One bill per meter; demand determinants confirmed against the rate schedule.
- 02 Site validation
Roof age and structure, service capacity, pad siting and fire setbacks.
- 03 Design and underwriting
Sizing against measured load, operating case with stated assumptions, executable agreement.
- 04 Permitting and interconnection
Town review plus utility study and approval — the long pole on this site type.
- 05 Operations
Dispatch against the billed-demand window, program compliance filings, periodic reporting.
Run this analysis on your own site.
One utility bill is enough to get a written read of your tariff.