Tools

Effect calculators

A preliminary techno-economic estimate in a minute: enter your site parameters and see the effect, payback, NPV and IRR. This is a guide for the 'is it worth going further' decision; the Centre prepares an exact feasibility study after a site survey.

Battery storage optimiser (BESS)

Daily dispatch model: charge in the cheapest hours, discharge in the most expensive — first against own load, surplus to the grid. 15-year economics with degradation, OPEX and discounting.

System parameters

Capacity(kWh)Inverter power(kW)Connection limit(kW)Export limit(kW)Charge hours (cheapest)(h)Discharge hours (most expensive)(h)Electricity cost incl. distribution(UAH/kWh)CAPEX per kWh(UAH)Efficiency per charge/discharge stage(%)

Day-ahead prices by segment

Night (1–7, 24)(UAH/MWh)Shoulder (8–17)(UAH/MWh)Peak (18–23)(UAH/MWh)

Current day-ahead prices: oree.com.ua.

Site load

Day (8–17)(kW)Evening (18–22)(kW)Night (23–7)(kW)

Average load per segment of the day. An energy audit gives the exact profile.

Acceptable payback (6.7 yrs)

Charge: 4 h · Discharge: 2 h

NPV is negative at an 18% discount rate: simple payback does not imply investment attractiveness.

Daily effect: ₴ 742
Annual effect: ₴ 270,698
CAPEX: ₴ 1,600,000
Payback: 6.7 years
NPV (15 yrs): ₴ -486,594
IRR: 10.4%
Cycle efficiency: 85.9%
Revenue per kWh charged: 3.82 UAH/kWh

Daily chart: charge / discharge and state of charge

Charge, kWDischarge, kWState of charge, %

Order a site feasibility study

Estimates only: a typical daily day-ahead price and load profile, no taxes, reserves or grid-connection specifics. Order a feasibility study for decisions about a specific site.