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This Worcester County suburb of ~38,400 is served by SELCO -- the town's own triple-play electric, cable, and internet utility -- at ~$0.18/kWh all-in, about 55% below National Grid right across the line in Worcester. A lower rate means a longer payback, but SELCO offers its own 0% interest solar loan and full-retail net metering. No statewide SMART 3.0 or ConnectedSolutions here -- this is the honest Central MA math.
SELCO municipal utility • ~$0.18/kWh • 0% solar loan • No SMART/ConnectedSolutions
2026 Reality: The 30% federal tax credit (Section 25D) expired for homeowners December 31, 2025. All costs in this guide reflect $0 federal credit. Full details
Municipal Utility Notice: Shrewsbury is served by SELCO (Shrewsbury Electric & Cable Operations), the town's own municipal light plant, not National Grid or Eversource. As an MLP customer you are not eligible for the statewide SMART 3.0 or ConnectedSolutions programs, and your net metering is set by SELCO rather than the state. SELCO substitutes its own programs -- a 0% interest solar loan, full-retail net metering, and a Connected Homes battery rebate -- and requires solar to be customer-owned (no leases or PPAs). The math here is genuinely different from neighboring Worcester on National Grid.
A 12.5 kW system in Shrewsbury costs $36,250-$40,625 in 2026. With SELCO rates at ~$0.18/kWh all-in and no SMART income, annual savings are approximately $2,650/yr. Cash payback takes 14-15 years -- but SELCO's 0% interest solar loan can make a financed system cash-flow positive much sooner. Over 25 years, total savings are approximately $65,000.
Cost Range
$2.90-$3.25/W
Fully installed
Avg System
12.5 kW
Shrewsbury average
Payback
14-15 yrs
Cash purchase
25-Year Savings
~$65K
Estimated total value
Shrewsbury is an inland Central Massachusetts suburb of ~38,400 in Worcester County, immediately east of the city of Worcester and split by Lake Quinsigamond. Steady postwar and recent growth has filled out large-lot subdivisions, especially in the north of town. Power comes from SELCO -- Shrewsbury Electric & Cable Operations -- a town-owned municipal light plant that is unusual even among municipals because it also delivers cable TV and internet. SELCO's electric rate sits well below the investor-owned utilities, which is great for monthly bills and is exactly why its solar incentives (a 0% loan and full-retail net metering) look nothing like National Grid's next door.
Population
~38,400
Median Home Value
~$480,000
Primary Utility
SELCO (triple-play MLP)
Electric Rate
~$0.18/kWh
SELCO Solar Program
0% loan + full-retail NEM
Region
Central MA / Worcester County
Typical System Size
11-15 kW
Solar Irradiance
4.1 kWh/m²/day
Shrewsbury and Worcester share a town line but sit on completely different utility structures -- SELCO (municipal) versus National Grid (investor-owned) -- and that drives dramatically different solar economics. Here is a direct comparison.
| Factor | Shrewsbury (SELCO) | Worcester (Nat Grid) |
|---|---|---|
| Electric Rate | ~$0.18/kWh | ~$0.39/kWh |
| Net Metering | Full retail (~1:1), SELCO-set | ~1:1 (state-mandated) |
| Financing Help | SELCO 0% interest solar loan | Market-rate loan / lease / PPA |
| Annual Savings (12.5 kW) | ~$2,650/yr | ~$5,850/yr |
| SMART 3.0 Income | Not eligible ($0) | ~$450/yr |
| ConnectedSolutions | Not eligible ($0) | ~$2,250-2,750/yr |
| Total Annual Value | ~$2,650/yr | ~$8,550-9,050/yr |
| Payback Period | 14-15 years (cash) | 5-7 years |
| 25-Year Savings | ~$65K | ~$155K+ |
Bottom line: Shrewsbury homeowners capture roughly 70% less recurring annual value from solar than a Worcester neighbor on National Grid, because SMART and ConnectedSolutions income isn't on the table here. Your SELCO rate is great for daily electricity costs, and the 0% SELCO loan softens the upfront sting -- but the low rate still stretches the cash payback period.
Costs for different system sizes in Shrewsbury at $2.90-3.25/W. Annual savings are figured on SELCO rates (~$0.18/kWh all-in), not National Grid rates. Shrewsbury's larger newer-development lots and homes tend to support systems at the bigger end of this table -- which spreads fixed soft costs further and pairs well with the SELCO 0% loan.
| System Size | Low Cost | High Cost | Annual Savings | Best For |
|---|---|---|---|---|
| 7 kW | $20,300 | $22,750 | ~$1,480/yr | Condo / smaller home |
| 9 kW | $26,100 | $29,250 | ~$1,910/yr | Mid-size colonial / ranch |
| 12.5 kW | $36,250 | $40,625 | ~$2,650/yr | Typical Shrewsbury home |
| 15 kW | $43,500 | $48,750 | ~$3,180/yr | Large home / EV + battery |
| 18 kW | $52,200 | $58,500 | ~$3,810/yr | High usage / all-electric home |
Prices include equipment, labor, permits, and grid interconnection. No federal tax credit included (expired). $1,000 MA state tax credit not deducted. Annual savings based on SELCO all-in rates ($0.1765/kWh: $0.1545/kWh energy charge + $13.17/mo customer charge, effective March 2026). No SMART income included (MLP -- not eligible). Financing via the SELCO 0% loan is not reflected in these gross prices.
Shrewsbury's neighborhoods run from large-lot newer subdivisions in the north to the Lake Quinsigamond shoreline in the east and the older Worcester-border blocks in the south. All sit in SELCO territory at the same rate; what varies by neighborhood here is lot size, roof age, and tree canopy -- all of which drive how big a system fits and how well it produces inland in Central MA.
Home Types
Newer colonials, garrison, contemporary
Avg System
13-16 kW
The town's newer large-lot subdivisions -- open exposure, minimal shading, and modern roof framing built for full-size arrays. Higher household energy use here justifies 13-16 kW systems, the biggest in town and the strongest fit for spreading soft costs against the SELCO 0% loan.
Home Types
Colonials, Capes, Victorian, mixed ages
Avg System
10-13 kW
Older mixed-age housing around the town common, on tighter lots with some mature street trees -- a shade study is worthwhile. Roof age varies widely, so a structural assessment up front avoids surprises. Solar access is generally decent on south-facing planes.
Home Types
Ranches, split-levels, Capes
Avg System
11-14 kW
1960s-1980s ranches and split-levels near the Worcester line. Many have clean, simple south-facing roof planes that are ideal for cost-efficient layouts. Moderate canopy. Housing stock mirrors the adjacent Worcester neighborhoods -- but on SELCO, not National Grid.
Home Types
Waterfront homes, cottages, mixed
Avg System
9-12 kW
Lakefront and near-lake properties, some converted from seasonal cottages. Canopy can be dense right at the shoreline, so production hinges on a careful shade analysis -- but roofs with open exposure over the water can perform very well. This is also where SELCO's Connected Homes battery rebate pairs well with outage-prone lake lots.
Solar is not for every Shrewsbury homeowner, but it can be a smart investment in the right circumstances.
You plan to stay in your home 15+ years
You want energy independence and resilience
You have high energy usage (EV, heat pump, pool)
You want to hedge against future SELCO rate increases
Environmental impact matters to you
You can pay cash or get a low-APR loan (<5%)
You want to increase your property value
You only care about quick financial payback (<10 years)
You plan to move within 10 years
You would need a high-APR loan (7%+)
Your roof needs replacement in the next 5 years
Heavy tree shading from Lake Quinsigamond canopy
The Shrewsbury Building Department handles the building/electrical permit (typically about 8 business days, fee roughly $50-$100, online applications accepted), and SELCO handles interconnection -- which, as a single town-run utility, it turns around fast, on the order of 12 business days. End to end, Shrewsbury solar projects usually run about 4-9 weeks from signed contract to permission to operate. Because SELCO requires customer-owned systems, plan the financing (cash or the SELCO 0% loan) before you file.
Installer evaluates roof condition, shade, and orientation. On larger north-Shrewsbury lots this is where a full-size 13-16 kW layout gets confirmed.
Online application to the Shrewsbury Building Department (~8 business days, ~$50-$100), with electrical and structural plans, plus the SELCO interconnection application filed in parallel.
Typical installation 1-3 days, followed by town electrical and building inspection.
SELCO approves the grid connection and installs the bi-directional meter -- usually within about 12 business days as a single local utility. Confirm net metering enrollment at this step.
Statewide SMART 3.0 and ConnectedSolutions don't reach municipal-utility territory -- but SELCO substitutes its own programs, and you still get the MA state-level exemptions. The headline items are SELCO's 0% interest solar loan and full-retail net metering.
SELCO offers its own zero-interest solar loan to customers in place of per-watt rebates -- the financing edge that National Grid towns don't have. Customer-owned systems only. Confirm current terms with SELCO.
0% APR
Municipal solar loan
SELCO credits excess solar generation at approximately the full retail rate (~1:1) -- among the more favorable municipal net metering policies in MA. Terms are SELCO-set, not state-mandated; confirm with SELCO at (508) 841-8500.
~$2,650/yr
Based on ~$0.18/kWh all-in rate
Residential battery storage rebate of $100/kWh, capped at $2,000 (minimum 7.5 kWh), via SELCO's Connected Homes program. Useful for outage backup since ConnectedSolutions isn't available here.
Up to $2,000
Enroll in Connected Homes first
15% of system cost, capped at $1,000. Available to all MA residents.
$1,000
One-time credit
Solar systems exempt from 6.25% MA sales tax. Available statewide.
~$2,402
Savings on typical system
Solar-added value exempt from property tax for 20 years. Shrewsbury has a 1.137% residential rate.
~$437/yr
20-year exemption (~$8,740 total)
Not available. SMART only applies to IOU customers.
$0/yr
Not eligible
Not available. ConnectedSolutions is Eversource/National Grid only.
$0/yr
Not eligible
Financing is where Shrewsbury actually has an advantage over IOU towns: SELCO offers a 0% interest solar loan, so a financed system can stay cash-flow positive even at the low SELCO rate. One catch -- SELCO prohibits third-party-owned solar (no leases or PPAs), so the system must be customer-owned via cash or a loan.
Upfront
Low / $0 down
Monthly
Principal only (0% APR)
25-yr Savings
Best of the financed options
Ownership
You own it
SELCO offers its own 0% interest solar loan to customers in place of per-watt rebates. With no interest, the loan payment is far easier to keep below your bill savings even at the low SELCO rate -- this is the financing edge Shrewsbury has that National Grid towns do not. Customer-owned systems only. Confirm current loan terms and caps directly with SELCO.
Upfront
~$36,250-$40,625
Monthly
$0
25-yr Savings
~$65K
Ownership
You own it
Best long-term value but a 14-15 year payback given the low SELCO rate. Energy independence and rate-hedge are the primary drivers. If you have the capital, compare it head-to-head against SELCO's 0% loan.
Upfront
$0 down
Monthly
~$245-345/mo (5.5-8% APR)
25-yr Savings
~$25-40K
Ownership
You own it
A market-rate loan is the fallback if SELCO 0% loan funds are unavailable. At the low SELCO rate, payments may exceed monthly bill savings for 10+ years, so a sub-5% APR is essential -- but the SELCO 0% loan is almost always the stronger choice.
Upfront
N/A
Monthly
N/A
25-yr Savings
N/A
Ownership
Prohibited in SELCO territory
Unlike most of Massachusetts, third-party-owned solar (leases and PPAs) is explicitly prohibited in SELCO territory -- solar must be customer-owned to interconnect. That is why the SELCO 0% loan exists: it is the no-money-down path, instead of a lease.
Section 25D (the 30% residential solar tax credit) expired December 31, 2025 under the OBBBA. Shrewsbury homeowners receive $0 in federal residential credit -- and because SELCO requires customer-owned systems (no PPAs or leases), the third-party-ownership workaround that exists elsewhere isn't available here either. The commercial Section 48/48E ITC still applies to commercial/third-party-owned projects on two pathways: begin construction on or before July 4, 2026 to lock in the full timing, or begin later and still qualify if placed in service by December 31, 2027 -- but for a Shrewsbury homeowner, plan on $0 federal credit.
Read: What happened to the solar tax creditSolar panels in Shrewsbury cost $2.90-3.25 per watt installed in 2026. A typical 12.5 kW system costs $36,250-$40,625. The federal Section 25D residential tax credit expired December 31, 2025 -- homeowners receive $0 in federal credit. Shrewsbury is served by SELCO (Shrewsbury Electric & Cable Operations), a municipal light plant, so the statewide SMART 3.0 and ConnectedSolutions programs do not apply. In their place, SELCO offers its own 0% interest solar loan and full-retail net metering.
SELCO -- Shrewsbury Electric & Cable Operations -- is the town-owned municipal light plant that serves Shrewsbury, completely independent of National Grid and Eversource. It is unusual even among municipals: it is a triple-play utility that also provides cable TV and internet. Because it is an MLP, SELCO sets its own electric rates, net metering, and solar policy rather than following the state Department of Public Utilities. That is why solar in Shrewsbury works differently from neighboring Worcester right across the town line on National Grid.
SELCO charges approximately $0.1765/kWh all-in ($0.1545/kWh energy charge plus a $13.17/mo customer charge, effective March 2026) -- about 55% less than National Grid's rates in Worcester. A lower rate is great for your bill, but it means each solar kWh offsets less, so annual savings are lower (about $2,650/yr vs ~$5,850/yr for the same system in National Grid territory). SELCO customers also can't earn SMART 3.0 (worth ~$450/yr for 12.5 kW) or ConnectedSolutions battery revenue ($2,250-$2,750/yr). The net effect is a 14-15-year cash payback vs 5-7 years in Worcester -- though SELCO's 0% loan narrows the gap by removing financing cost.
Two big ones. First, SELCO offers a 0% interest solar loan to its customers in place of the per-watt rebates some other municipals use. Second, SELCO credits excess solar generation at the full retail rate (approximately 1:1) -- one of the more favorable net metering policies among MA municipals. SELCO also has a residential battery storage rebate of $100/kWh up to $2,000 (minimum 7.5 kWh) through its Connected Homes program. Note that systems must be customer-owned -- leases and PPAs are not allowed in SELCO territory. Confirm current loan, net metering, and rebate terms with SELCO before signing.
No. Both are set up only for investor-owned utility customers (Eversource, National Grid, Unitil). SELCO is a municipal light plant and does not participate -- your net metering and any storage incentives in Shrewsbury are set by SELCO, not by SMART or ConnectedSolutions. SELCO substitutes its own 0% solar loan, full-retail net metering, and Connected Homes battery rebate. This is the single biggest structural difference between Shrewsbury and Worcester (National Grid) for solar.
It depends on your priorities. The cash payback is 14-15 years -- longer than National Grid towns but still within the 25-year panel warranty, and SELCO's 0% loan can make a financed system cash-flow positive sooner. Solar provides energy independence, protection against future SELCO rate increases, a property-value boost, and environmental benefit. Shrewsbury's larger newer-development lots and homes often support bigger systems, which spreads the fixed soft costs further. For homeowners planning to stay 15+ years, solar remains a reasonable investment; over 25 years a typical system saves around $65,000.
We'll give you an honest assessment based on SELCO rates, full-retail net metering, and the SELCO 0% loan -- not inflated numbers based on National Grid pricing. Get real Shrewsbury-specific solar savings.
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Read morePricing: EnergySage Solar Marketplace (January 2026), NuWatt Energy Central MA installations.
Utility rates: Shrewsbury Electric & Cable Operations (SELCO) published rates ($0.1545/kWh energy charge + $13.17/mo customer charge, effective March 2026), verified June 2026.
Solar loan, net metering & battery rebate: SELCO residential rebates/incentives and net metering policy, verified May 2026. Leases/PPAs prohibited (customer-owned only).
SMART eligibility: MassDOER program rules -- municipal light plant customers excluded.
Tax exemptions: MA Department of Revenue, Shrewsbury Assessor data.