Cape Light Compact Pays You $275/kW/Year. Are You Collecting?

Every July and August, Cape Cod's Eversource grid runs near capacity. The summer population triples. Air conditioners run all day. The grid strains hardest from about 3pm to 8pm on hot weekdays.

Eversource doesn't want to build new transmission infrastructure for a few dozen peak hours per year. So instead, they pay battery owners to dispatch stored energy during those windows. The program is called ConnectedSolutions, administered through Cape Light Compact, and it pays $275 per kilowatt of dispatchable capacity per year.

Most Cape Cod homeowners with batteries aren't enrolled. They're leaving real money on the table every year.

$275

Per kW of dispatch capacity, per year

5–10

Summer dispatch events per year (2–4 hours each)

$1,416

Annual revenue, typical 2-battery system

How ConnectedSolutions Actually Works

Cape Light Compact enrolls your battery system in the program and coordinates with Eversource. During summer peak demand events (typically afternoons from June through September), Eversource sends a dispatch signal. Your battery automatically discharges into your home circuit, reducing your demand from the grid.

You don't feel it. You don't do anything. Your lights stay on, your AC runs. The battery just does what it's already doing — shifting energy use away from the grid — but now you're compensated for it.

At the end of the program year, Cape Light Compact sends you a check for the amount you qualified for based on your system's dispatchable capacity.

How Dispatch Capacity Is Calculated

The payment is based on how many kilowatts your battery can dispatch during a 5-hour window (the peak demand period). The formula:

ConnectedSolutions dispatch capacity:
usable_battery_kwh = total_kwh × 0.90 (90% usable depth of discharge)
dispatch_kw = min(usable_battery_kwh / 5 hours, inverter_continuous_kw)

Annual payment:
cs_revenue = dispatch_kw × $275

Translated: a larger battery bank earns more, up to the limit of your inverter's continuous output rating. Your inverter is the ceiling.

Battery Setup	Total kWh	Dispatch kW	Annual Revenue
1× EG4 WallMount	14.3 kWh	2.6 kW	~$708/yr
2× EG4 WallMount	28.6 kWh	5.1 kW	~$1,416/yr
3× EG4 WallMount	42.9 kWh	7.7 kW	~$2,124/yr
4× EG4 WallMount (Sol-Ark 15K)	57.2 kWh	10.3 kW	~$2,831/yr

ConnectedSolutions revenue is guaranteed by contract, not dependent on electricity prices or usage patterns. It's the most predictable income stream in the system.

What Happens During a Dispatch Event

Dispatch events happen on hot summer weekdays, usually 3–8pm. Cape Light Compact notifies enrolled systems in advance — typically the day before or morning of. Your Sol-Ark automatically manages the discharge. During the event:

Your battery discharges into your home circuit, reducing your grid draw
Your solar panels (if you have them) continue producing and contributing
Your home sees no change in power quality or availability
If you have a generator and the grid fails at the same time (rare), the system handles the transition normally

After the event, the battery recharges from solar or low-rate grid power overnight. By morning, it's back at 100% for the next day.

Does it affect backup capacity?

Dispatch events are pre-announced and typically happen on normal summer afternoons — not during outages. After an event, the battery recharges. Your backup capacity is restored before the next storm season typically arrives. In our experience, there's never been a conflict between a dispatch event and a storm response on Cape Cod.

Who Qualifies

ConnectedSolutions is available to Eversource customers in the Cape Light Compact service territory — covering all of Cape Cod and the Islands. Your battery system must:

Be connected to an Eversource account in CLC territory
Have a minimum dispatchable capacity of 1 kW (most systems well exceed this)
Be accessible for Cape Light Compact dispatch signals (your Sol-Ark handles this automatically)
Enroll before the season begins (typically spring enrollment for summer program)

We handle the enrollment paperwork as part of every Sol-Ark installation. You don't have to figure out the program yourself.

The Full Annual Value Stack

ConnectedSolutions is one of three annual value streams from a battery system. Together, they're what makes the economics work:

Annual value, 2-battery system with 14kW existing solar (solar_only add-on):
ConnectedSolutions (Cape Light Compact): +$1,416/yr
Solar self-consumption improvement: +$1,500–$3,000/yr
TOU arbitrage (peak discharge savings): +$300–$800/yr

Total annual value: $3,200–$5,200/yr

Against a net add-on cost of $16,000–$18,000, that's a payback of 3–5 years. After payback, the system is generating pure return. ConnectedSolutions alone covers roughly 30% of the annual value — and it's the piece most homeowners didn't know existed.

What about if you have no solar?

You still qualify for ConnectedSolutions. The battery charges from the grid overnight at low rates and discharges during peak events. Without solar self-consumption, the annual value drops somewhat, but ConnectedSolutions + TOU arbitrage still generates $1,700–$2,200/year, improving payback on the battery-only investment.

Common Questions

Does this require internet connectivity?

Yes. Your Sol-Ark connects to MySolArk via WiFi or Ethernet. Cape Light Compact sends dispatch signals through this connection. Most homeowners already have this running for monitoring — enrollment uses the same infrastructure.

Can I opt out of a dispatch event?

You can, though opting out too frequently may affect your payment calculation. In practice, dispatch events are short and predictable enough that most homeowners simply let them run automatically. The battery recharges overnight.

How is the annual payment calculated?

Cape Light Compact measures your system's dispatch performance over the program year and pays at $275/kW based on your demonstrated capacity. Well-designed systems typically achieve full payment. We configure Sol-Ark specifically to maximize ConnectedSolutions performance during enrollment.

Is the $275/kW rate guaranteed to stay the same?

The rate is set by Cape Light Compact's demand response program, which is regulated and has been running consistently. Rates are set program year by program year. No guarantee on future rates, but the program has been stable and there's no indication of significant changes. We'll update customers if the program terms change.

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